Lab Publications
Recent REVIEWS
SPIDER SYSTEMATICS
ORBWEBS AND SILK
INDIAN OCEAN BIOGEOGRAPHY
EUNUCH PHENOMENON
INTERMEDIATE DISPERSAL HYPOTHESIS
Check out this coverage of our field expedition in Madagascar 2017 [story, video]
Agnarsson I. 2024. Biomechanics: rain yields tougher spider silks. Current Biology xx: xxx-xxx
2023
Wang K, Wang J, Liang B, Ziu Y, Chen J, Chang J, Agnarsson I, Zhao H, Liu J. Accepted. Eyeless cave-dwelling Leptonetela spiders still rely on light. Science Advances 9: eadj034. Download PDF
Agnarsson I, Coddington JA, Caicedo-Quiroga L, May-Collado LJ, Pálsson S. 2023. Deep mtDNA sequence divergences and possible species radiation of whip spiders (Arachnida, Amblypygi, Phrynidae, Phrynus/Paraphrynus) among Caribbean oceanic and cave islands. Taxonomy 3: 133-147. Download PDF
Agnarsson I. 2023. Grand challenges in research on arachnid diversity, conservation, and biogeography. Frontiers in Arachnid Science 2: 110141. Download PDF
Agnarsson I, Goodnight C, Higgins L. 2023. Developmental asynchrony: a potential cost of extreme sexual size dimorphism in seasonal environments. Journal of Arachnology 52: 75-85. Co
Kuntner M, Čandek K, Gregorič M, Turk E, Hamilton CA, Chamberland L, Starrett J, Cheng R-C, Coddington JA, Agnarsson I, Bond JE. 2023. Increasing information content and diagnosability in araneoid spider family classification. Systematic Biology 72-964-971. Download PDF
Zhang H, Zhong R, Yu L, Chen J, Agnarsson I, Liu J. 2023. Safety is increasingly important in cobweb spiders based on life history. Integrative Zoology 18: 736-745. Download PDF
Agnarsson I, Starrett J, Babbitz Z, Bond JE, Gregoric M, Raberahona OC, Williams S, Kuntner M. 2023 Discovery and genetic characterization of single cohort adult colonies with male aggregations, and preliminary evidence for lekking in a Malagasy kite spider (Isoxya, Gasteracanthinae). Insect Systematics and Diversity 7: 3. Download PDF
2022
Babb PL, Gregorič M, Lahens NF, Nicholson DN, Hayashi CY, Higgins L, Kuntner M, Agnarsson I, Voight BF. 2022. Characterization of the genome and silk-gland transcriptomes of Darwin’s bark spider (Caerostris darwini). PloS One 17: e0268660. Download PDF
Chamberland L, Agnarsson I, Quayle IL, Ruddy T, Starrett J, Bond JE. 2022. Biogeography and eye size evolution of the ogre-faced spiders. Scientific Reports 12: 17769. Download PDF
*Shapiro L, Binford G, Agnarsson I. 2022. Single island endemism despite repeated dispersal in Caribbbean Micrathena (Araneae: Araneidae): an updated phylogeographic analysis. Diversity 14, 128. Download PDF
*Cala-Riquelme F, Wiencek P, Flores-Daza E, Binford G, Agnarsson I. 2022. Island-to-island vicariance, founder-event and within-area speciation, the biogeographical history of the Antillattus clade in the Caribbean (Salticidae: Euophryini). Diversity 14, 224. Download PDF
Deng Z, Agnarsson I, Chen Z, Liu J. 2022. Meotipa species (Araneae, Theridiidae) from China. Zookeys 1082: 153-178. Download PDF
Bond JE, Godwin RL, Colby JD, Newton LG, Zahnle XJ, Agnarsson I, Hamilton CA, Kuntner M. 2022. Improving taxonomic practices and enhancing its extensibility—an example from araneology. Diversity 14: 5 https://doi.org/10.3390/d14010005. Download PDF
Korenko S, Sýkora J, Černecká Ľ, Gajdoš P, Purgat P, Černecký J, Holý K, Heneberg P, Agnarsson I. 2022. Elevation gradient affects the distribution and host utilisation of Zatypota anomala (Hymenoptera, Ichneumonidae) associated with mesh web weaving spiders (Araneae, Dictynidae). Journal of Hymenoptera Research 93: 89-100. Download PDF
Liu F, Agnarsson I, Liu J, Zhu Y.2022. Description and phylogenetic analysis of two new Episinus (Aranea, Theridiidae) species from China. Zookeys 1125: 33-46. Download PDF
2021
Čandek K, Agnarsson I, Binford GJ, Kuntner M. 2021. Biogeography of Long-Jawed Spiders Reveals Multiple Colonization of the Caribbean. Diversity 13: 622. Download PDF
Li Z, Agnarsson I, Peng Y, Liu J. 2021. Eight cobweb spider species from China building detritus-based, bell-shaped retreats (Araneae, Theridiidae). Zookeys 1055: 95-121. Download PDF
K Zin, Alicea-Serrano AM, Singla S, Agnarsson I, Garb JE, Kuntner M, Gregorič M, Haney RA, Marhabaie M, Blackledge TA, Dhinojwala A. 2021. Correlation between silk protein secondary structure and mechanical performance for the ultra-tough dragline silk of Darwin’s bark spider. Journal of the Royal Society Interface 18: 20210320. Download PDF
Zhang H, Zhong Y, Zhu Y, Agnarsson I, Liu J. 2021. A molecular phylogeny of the Chinese Sinopoda spiders (Sparassidae, Heteropodinae): implications for taxonomy. PeerJ 9:e11775. Download PDF
2020
*Chamberland L, Binford GJ, Agnarsson I. 2020. Phylogeography of the widesread Caribbean spiny orb weaver Gasteracantha cancriformis. PeerJ 8:e8976 DOI 10.7717/peerj.8976. Download PDF
Dupérré N, **Francisco C, Agnarsson I, Binford GJ. 2020. The spider genus Heteroonops (Aranea: Oonopidae) from Dominican Republic, the discovery of ten new species. Zookeys 964: 1-30 DOI: 10.3897/zookeys.@@.51554. Download PDF
Luo Y, Goh SP, Gonzaga MO, Santos AJ, Tanikawa A, Yoshida H, Haddad C, May-collado LC, Chen R-C, Kuntner M, Agnarsson I. 2020. Global diversification of the cobweb spider genus Anelosimus assimilates Neogene climate oscillations. Systematic Biology 69: 1122-1136. Download PDF
**LeMay GA, Agnarsson I. 2020. New species of smiley-faced spider Spintharus (Araneae, Theridiidae) from Brazil, and comments on unobserved diversity in South America. ZooKeys 915: 17-24. Download PDF
Scharff N, Coddington JA, Blackledge TA, Agnarsson I, Framenau V, Szuts T, Hayashi CY, Dimitrov D. 2020. Phylogeny of the orb-weaving spider family Araneidae (Araneae, Araneoidea). Cladistics 36: 1-21. Download PDF
*Čandek K, Agnarsson I, Binford GJ, Kuntner M. 2020. Caribbean golden orbweaving spiders maintain gene flow with North America. Zoologica Scripta 49: 210-221. Download PDF
Agnarsson, I., and M. Kuntner. 2020. Araneae. Pp. 613–614 in Phylonyms: A Companion to the PhyloCode (K. de Queiroz, P. D. Cantino, and J. A. Gauthier, eds.). CRC Press, Boca Raton, FL.
Agnarsson, I., and M. Kuntner. 2020. Araneomorphae. Pp. 623 in Phylonyms: A Companion to the PhyloCode (K. de Queiroz, P. D. Cantino, and J. A. Gauthier, eds.). CRC Press, Boca Raton, FL.
Agnarsson, I., and M. Kuntner. 2020. Mesothelae. Pp. 621-623 in Phylonyms: A Companion to the PhyloCode (K. de Queiroz, P. D. Cantino, and J. A. Gauthier, eds.). CRC Press, Boca Raton, FL.
Kuntner, M., and I. Agnarsson. 2020. Mygalomorphae. Pp. 621 in Phylonyms: A Companion to the PhyloCode (K. de Queiroz, P. D. Cantino, and J. A. Gauthier, eds.). CRC Press, Boca Raton, FL.
Kuntner, M., and I. Agnarsson. 2020. Opisthothelae. Pp. 619–620 in Phylonyms: A Companion to the PhyloCode (K. de Queiroz, P. D. Cantino, and J. A. Gauthier, eds.). CRC Press, Boca Raton, FL.
2019
Garb JE, Haney RA, Schwager EE, Gregoric M, Kuntner M, Agnarsson I, Blackledge TA. 2019. The transcriptome of Darrwin's bark spider silk glands predicts proteins contribution to dragline silk toughness. Communications Biology 2: 275. Download PDF
Smith C, Cotter A, Grinsted L, Bowolaksono A, Watiniasih NL, Agnarsson I. 2019. In a relationship: sister species in mixed colonies, with a description of Chikunia bilde (Theridiidae). Zoological Journal of the Linnean Society 186: 337-352. Download PDF
Tong Y, Binford G, Agnarsson I. 2019. Huntsmen of the Caribbean: multiple tests of the GAARlandia hypothesis. Molecular Phylogenetics and Evolution 130: 259-268. Download PDF
Coddington JA, Agnarsson I, Hamilton CA, Bond JE. 2019. Spiders did not repeatedly gain, but repeatedly lost, foraging webs. PeerJ 7:e6703. Download PDF
Agnarsson I, Ali J, Barrington D. 2019. Vicariance Biogeography. Oxford Bibliographies: in Ecology. doi: 10.1093/obo/9780199830060-0225. Download PDF
Candek K, Agnarsson I, Binford G, Kuntner M. 2019. Biogeographic history of Cyrtognatha spiders reveals a single mid-Miocene owerwater colonization of the Caribbean archipelago. Scientific Reports 9: 397. Download PDF
Kuntner M, Hamilton CA, Cheng R-C, Gregoric M, Lupse N, Moriarty Lemmon E, Lemmon AR, Agnarsson I, Coddington JA, Bond JE. 2019. Golden orbweavers ignore biological rules: Phylogenomic and comparative analyses unravel a complex evolution of sexual size dimorphism. Systematic Biology 68: 555-572. Download PDF
Kuntner M, Agnarsson I. 2019. Diversity of tropical spiders. Frontiers for Young Minds 9:64 https://kids.frontiersin.org/article/10.3389/frym.2018.00064 Download PDF
2018
Chamberland L, McHugh A, Kechejian S, Binford GJ, Bond JA, Coddiongton JA, Dolman G, Hamliton C, Harvey MS, Kuntner M, Agnarsson I. 2018. From Gondwana to GAARlandia: global biogeography of ogre-faced spiders (Deinopidae) mirrors geologic history. Journal of Biogeography 45: 2442-2457. Download PDF
Cala-Riquelme F, Quijano-Cuervo L, Sabogal-Gonzalez A, Agnarsson I. 2018. New species of Otiothopinae (Araneae: Palpimanidae) from Colombia. Zootaxa 4442: 423-436. Download PDF
Chapin KJ, Winkler DE, Wiencek P, Agnarsson I. 2018. Island biogeography and ecological modeling of the amblygypid Phrynus marginemaculatus in the Florida Keys archipelago. Ecology and Evolution 8" 9139-9151. Download PDF
Luo Y, Agnarsson I. 2018. Global mtDNA genetic structure and hypothesized invasion history of a major pest of citrus, Diaphorina citri (Hemiptera: Lividae). Ecology and Evolution 8: 257-265. Download PDF
Agnarsson I, Van Patten C, Sargeant L, Chomitz B, Dziki A, Binford C. 2018. A radiation of the ornate Caribbean 'smiley-faced spiders' - with descriptions of 15 new species (Araneae, Theridiidae, Spintharus). Zoological Journal of the Linnean Society 182: 758-790. Download PDF
2017
Babb PL, Lahensa NF, Correa-Garhwald SM, Nicholson DN, Kima EJ, Hogenesch JB, Higgins L, Hayashi C, Agnarsson I, Voight BF. 2017. The Nephila clavipes genome highlights the diversity of spider silk genes and their complex expression. Nature Genetics 49: 895-903. Download PDF
Yang T, Liu J, Yuan L, Zhang Y, Li D, Agnarsson I, Chen J. 2017. Identification of potential biological control species through RQ-PCR of tea plantation spider communities. Scientific Reports 7: 7784| DOI:10.1038/s41598-017-07668-w. Download PDF
Lopez F, Pickett KM, Carpenter JM, Ballif BA, Agnarsson I. 2017. Phylogenomic analysis of yellowjackets and hornets (Hymenoptera: Vespidae, Vespinae). Molecular Phylogenetics and Evolution 107: 10-15. Download PDF
Yussef-Vanegas S, Agnarsson I. 2017. DNA-barcoding of forensically important blow flies (Diptera: Calliphoridae) in the Caribbean region. PeerJ 5: e3516. https://doi.org/10.7717/peerj.3516 Download PDF
Cala-Riquelme F, Gutierrez-Estrada M, Florez-Daza AE, Agnarsson I. 2017. A new six-eyed sand spider Sicarius Keyserling, 1880 (Araneae: Haplogynae: Sicariidae) from Colombia, with information on its natural history. Arachnology 17: 193-199. Download PDF
Smith HM, Harvey MS, Agnarsson I, Anderson GJ. 2017. Notes on the ant-mimic genus Anatea Berland (Araneae: Theridiidae) and two new species from tropical Australia. Records of the Australian Museum 67: 1-13. Download PDF
Agnarsson I, Levi HW. 2017. Theridiidae. In Ubick D, Cushing PE, Paquin P (eds) Spiders of North America: an identification manual. American Arachnological Society, chapter 63, p. 258-271. Download PDF
Viera C, Agnarsson I. 2017. Parental care and sociality. In Viera C, Gonzaga MO (eds), Behavior and Ecology of Neotropcal spiders - Contributions of studies from the Neotropical region, Springer, Cambridge, p. 352-381. Download PDF
2016
Agnarsson I, **LeQuier S, Kuntner M, Cheng R-C, Binford GJ. 2016. Phylogeography of a good Caribbean disperser: Argiope argentata (Araneae: Araneidae) and a new ‘cryptic’ species from Cuba. Zookeys 625: 25-44 Download PDF
Garrison N, Rodriguez J, Agnarsson I, Coddington JA, Griswold C, Hamilton CA, Hedin M, Kocot K, Ledford J, Bond JE. 2016. Spider phylogenomics: untangling the Spider Tree of Life. PeerJ 4:e1719; DOI 10.7717/peerj.1719 Download PDF
*Cao XW, Liu J, Chen J, Zheng G, Kuntner M, Agnarsson I. 2016. Rapid dissemination of taxonomic discoveries based on DNA barcoding and morphology. Scientific Reports in press
Liu J, May-Collado LJ, Pekar S, Agnarsson I. 2016. A revised and dated phylogeny of cobweb spiders (Araneae, Araneoidea, Theridiidae): a predatory Cretaceous lineage diversifying in the era of the ants (Hymenoptera, Formicidae). Molecular Phylogenetics and Evolution 94: 658-675. Request reprint
Agnarsson I, Gotelli NJ, **Agostini D, Kuntner M. 2016. Limited role of character displacement in the coexistence of congeneric Anelosimus spiders in a Madagascan montane forest. Ecography 39: 743-753. Request reprint
Xu X, Liu F, Chen J, Ono H, Agnarsson I, Li D, Kuntner M. 2016. Pre-Pleistocene geological and climatic events shaping diversification and distribution of primitively segmented spiders on East Asian Margins. Journal of Biogeography 43: 1004–1019. Request reprint
May-Collado LJ, Zambrana-Torrelio CM, Agnarsson I. 2016. Global spatial analyses of phylogenetic conservation priorities for aquatic mammals. Pp. 305-318 in Crandcolas P, Pellens R (eds), Biodiversity Conservation and Phylogenetic Systematics – preserving our evolutionary heritage in an extinction crisis, Topics in Biodiversity and Conservation, volume 14. Springer Open Download PDF.
**Cosgrove JG, Agnarsson I, Harvey MS, Binford GJ. 2016. Pseudoscorpion diversity and distribution in the West Indies: sequence data confirms single island endemism for some clades, but not others. Journal of Arachnology 44: 257–271 Download PDF
Coddington JA, Agnarsson I, Cheng R-C, *Čandek K, Driskell A, Frick H, Gregorič M, Kostanjšek R, Kropf C, Kweskin M, Lokovšek T, Pipan M, Vidergar N, Kuntner M. 2016. DNA barcode data accurately identify higher taxa. PeerJ 4:e2201; DOI 10.7717/peerj.2201
*Yusseff-Vanegas S, Agnarsson I. 2016. Molecular phylogeny of the forensically important genus Cochliomyia (Diptera: Calliphoridae). ZooKeys 609: 107–120. Request reprint
2015
**Dziki A, Binford GJ, Coddington JA, Agnarsson I. 2015. Spintharus flavidus in the Caribbean – a 30 million year biogeographical history and radiation of a ‘widespread species’. PeerJ 3:e1422; DOI 10.7717/peerj.1422 Download PDF
Agnarsson I, **Jencik BB, **Veve GM, *Hanitriniaina S, **Agostini D, *Goh SP, Pruitt J, Kuntner M. 2015. A radiation of subsocial Anelosimus spiders on Madagascar: remarkable local richness and endemism. Zookeys 509: 13-52. Download PDF
Lopez-Osorio F, Perrard A, Pickett KM, Carpenter JM, Agnarsson I. 2015. Phylogenetic tests reject Emery’s rule in the evolution of social parasitism in yellowjackets and hornets (Hymenoptera: Vespidae, Vespinae). Royal Society Open Science 2, 150159. Download PDF
Esposito LA, **Bloom T, **Caicedo L, **Alicia-Serrano A, **Sánchez-Ruíz J, Laura J. May-Collado, Binford G, Agnarsson I. 2015. Islands within islands: diversification of tailless whip spiders (Amblypygi, Phrynus) in Caribbean caves. Molecular Phylogenetics and Evolution 93: 107-117. Request reprint
May-Collado LJ, Kilpatrick WC, Agnarsson I. 2015. Mammals from ‘down under’: a multi-gene species-level phylogeny of marsupial mammals (Mammalia, Metatheria) PeerJ 3:e805; DOI 10.7717/peerj.80 Download PDF
Dines J, Mesnick SL, Ralls K, May-Collado LJ, Agnarsson I, Dean MD. 2015. A tradeoff between precopulatory and postcopulatory trait investment in male cetaceans. Evolution 69: 1560-1572. Download PDF
Gregorič M, Agnarsson I, Blackledge TA, Kuntner M. 2015. Phylogenetic position and composition of Zygiellinae and Caerostris with new insight into orb web evolution and gigantism. Zoological Journal of the Linnean Society 175: 225-243. Download PDF
Ruch J, Riehl T, May-Collado LJ, Agnarsson I. 2015. Multiple origins of subsociality in crab spiders (Thomisidae). Molecular Phylogenetics and Evolution 82: 330-340. Request reprint
Velez-Zuazo X, Alfaro-Shigueto J, Mangel J, Papa R, Agnarsson I. 2015. What barcode sequencing reveals about the shark fishery in Peru. Fisheries Research 161: 34-41. Download PDF
Kuntner M, Agnarsson I, Li D. 2015. The eunuch phenomenon: Adaptive evolution of genital emasculation in sexually dimorphic spiders. Biological Reviews 90: 279–296. Download PDF
Gregorič M, Blackledge TA, Agnarsson I, Kuntner M. 2015. A molecular phylogeny of bark spiders reveals new species from Africa and Madagascar (Araneae: Araneidae: Caerostris). Journal of Arachnology 43: 293-312. Download PDF
Marshall SA, Borkent A, Agnarsson I, Otis GW, **Fraser L, **d'Entremont D. 2015. New observations on a neotropical termite-hunting theridiid spider: opportunistic nest raiding, prey storage, and ceratopogonid kleptoparasites. Journal of Arachnology 43: 419-42. Download PDF
2014
Bond JE, *Garrison NL, *Hamilton CA, Godwin RL, Hedin M, Agnarsson I. 2014. Phylogenomics resolves a spider backbone phylogeny and rejects a prevailing paradigm for orb web evolution. Current Biology 24: 1765–1771. Download PDF
Agnarsson I, Cheng RC, Kuntner M. 2014. A Multi-Clade Test Supports the Intermediate Dispersal Model of Biogeography. PLoS One 9(1) e86780. Download PDF
Lopez-Osorio, Pickett KM, Carpenter JM, Ballif BA, Agnarsson I. 2014. Phylogenetic relationships of yellowjackets inferred from nine loci (Hymenoptera: Vespidae, Vespinae, Vespula and Dolichovespula). Molecular Phylogenetics and Evolution 73: 190-201. Request PDF
McHugh A, Yablonsky C, Binford G, Agnarsson I. 2014. Molecular phylogenetics of Caribbean Micrathena (Araneae: Araneidae) suggests multiple colonization events and single island endemism. Invertebrate Systematics 28:337-349. Download PDF
Bloom T, Binford G, Alayon G, Esposito L, Peterson I, Nishida A, Loubet-Senear K, Agnarsson I. 2014. Convergent loss of eyes in two families of spiders within a Hispaniola cave. Journal of Arachnology 42: 148-154. Download PDF
Cala-Riquelme F, Agnarsson I. 2014. New species of Otiothops MacLeay (Araneae: Palpimanidae: Otiothiopinae) from Cuba. Arachnology 16: 193-194. Download PDF
Rheims CA, Agnarsson I, Alayón Garcia G. 2014. Description of the male of Yabisi guaba (Araneae: Eresoidea: Hersiliidae). Zoologia 31: 405-407. Download PDF
Agnarsson I. 2014. Félagslyndar köngulær á þróunarfræðilegum blindgötum. Náttúrufræðingurinn 84: 132-140. [invited peer-reviewed review paper, in Icelandic with English abstract: ‘Social spiders on evolutionary blind alleys’]. Download PDF
Yusseff-Vanegas, S. 2014 Description of Third Instars of Cochliomyia minima (Diptera: Calliphoridae) From West Indies, and Updated Identification Key. Journal of Medical Entomology 51: 1051-1056
2013
Agnarsson I, Rayor L. 2013. A molecular phylogeny of the Australian huntsman spiders (Sparassidae, Deleninae): implications for taxonomy and social behaviour. Molecular Phylogenetics and Evolution 69: 895-905. Request PDF
Agnarsson I, Coddington JA, Kuntner M. 2013. Systematics – progress in the study of spider diversity and evolution. In: Spider Research in the 21st Century (Ed. Penney D), chapter 2, pp 58-111. Download PDF
May-Collado, L.J. 2013. Guyana dolphins (Sotalia guianensis) from Costa Rica emit whistles that vary with surface behaviours. Journal of the the Acoustic Society of America, Express Letters, 134: EL359-EL365. Download PDF
Kuntner M, Arnedo M, Trontelj P, Lokovšek T, Agnarsson I. 2013. A molecular phylogeny of nephilid spiders: Evolutionary history of a model lineage. Molecular Phylogenetics and Evolution 69: 961-979. Request PDF
Agnarsson I, Avilés L, Maddison WP. 2013. Loss of genetic variability in social spiders: genetic and phylogenetic consequences of population subdivision and inbreeding. Journal of Evolutionary Biology 26: 27-37 Access
Majer M, Agnarsson I, Svenning JC, BildeT. 2013. Social species in the spider genus Anelosimus occur in wetter, more productive habitats than non-social species. Naturwissenschaften 100: 1031-1040. Download PDF
Peng P, Blamires SJ, Agnarsson I, Lin HC, Tso I-M. 2013. A colour-mediated mutualism between two arthropod predators. Current Biology 23: 1-5. Request PDF
Agnarsson I, Gregorič M, Blackledge TA, Kuntner M. 2013. Phylogenetic placement of Psechridae and the convergent origin of orb-like spider webs. Journal of Zoological Systematics and Evolutionary Research 51: 100-106. Request PDF
Gregorič M, Kiesbüy HC, Quiñones Lebrón SG, Rozman A, Agnarsson I, Kuntner A. 2013. Optimal foraging, not biogenetic law, predicts spider orb web allometry. Naturwissenschaften 100: 263-268. Download PDF
Agnarsson I, Coddington JA, Kuntner M. 2013. Systematics – progress in the study of spider diversity and evolution. In: Spider Research in the 21st Century (Ed. Penney D), chapter 2, pp 58-111. Download PDF
May-Collado, L.J. 2013. Guyana dolphins (Sotalia guianensis) from Costa Rica emit whistles that vary with surface behaviours. Journal of the the Acoustic Society of America, Express Letters, 134: EL359-EL365. Download PDF
Kuntner M, Arnedo M, Trontelj P, Lokovšek T, Agnarsson I. 2013. A molecular phylogeny of nephilid spiders: Evolutionary history of a model lineage. Molecular Phylogenetics and Evolution 69: 961-979. Request PDF
Agnarsson I, Avilés L, Maddison WP. 2013. Loss of genetic variability in social spiders: genetic and phylogenetic consequences of population subdivision and inbreeding. Journal of Evolutionary Biology 26: 27-37 Access
Majer M, Agnarsson I, Svenning JC, BildeT. 2013. Social species in the spider genus Anelosimus occur in wetter, more productive habitats than non-social species. Naturwissenschaften 100: 1031-1040. Download PDF
Peng P, Blamires SJ, Agnarsson I, Lin HC, Tso I-M. 2013. A colour-mediated mutualism between two arthropod predators. Current Biology 23: 1-5. Request PDF
Agnarsson I, Gregorič M, Blackledge TA, Kuntner M. 2013. Phylogenetic placement of Psechridae and the convergent origin of orb-like spider webs. Journal of Zoological Systematics and Evolutionary Research 51: 100-106. Request PDF
Gregorič M, Kiesbüy HC, Quiñones Lebrón SG, Rozman A, Agnarsson I, Kuntner A. 2013. Optimal foraging, not biogenetic law, predicts spider orb web allometry. Naturwissenschaften 100: 263-268. Download PDF
2012
Agnarsson I, Kuntner M. 2012. The Generation of a Biodiversity Hotspot: Biogeography and Phylogeography of the Western Indian Ocean Islands. In Kesara Anamthawat-Jonsson (Ed.): Current Topics in Phylogenetics and Phylogeography of Terrestrial and Aquatic Systems. Rijeka: In Tech Publishers, pp. 33-82. ISBN 978-953-51-0217-5. Access
May-Collado, L.J. and J. Forcada. 2012. Small-scale estimation of relative abundance for the coastal spotted dolphins (Stenella attenuata) in Costa Rica: the effect of habitat and seasonality. Revista de Biologia Tropical 60(2): 133-142.
Blackledge TA, Kuntner M, Agnarsson I. 2012. Biomaterial evolution parallels behavioral innovation in the origin of orb-like spider webs. Scientific Reports 2: 833. Access
Grinsted L, Agnarsson I, Bilde T. 2012. Mixed-species colonies of theridiid spiders show extended maternal care and interspecific brood adoption. Naturwissenschaften 99: 1021-1030 DOI 10.1007/s00114-012-0983-4 Download PDF
García-Espinoza F, Martínez MT, Sánchez FJ, Yusseff-Vanegas SZ. 2012. Desarrollo larval y requerimientos calóricos de Chrysomya rufifacies (Diptera: Calliphoridae) durante primavera y verano en Torreón, Coahuila. Acta Zoológica Mexicana 28 (1) xxx-xxx (in press).
Agnarsson I. 2012. Systematics of new subsocial and solitary Australasian Anelosimus species (Araneae, Theridiidae). Invertebrate Systematics 26: 1-16. Download PDF
Agnarsson I. 2012. A new phylogeny of Anelosimus and the placement and behavior of Anelosimus vierae n. sp. from Uruguay (Araneae: Theridiidae). Journal of Arachnology 40: 78-84 Download PDF
Agnarsson I, Kuntner M, Blackledge TA. Darwin’s bark spider. 2012. In: McGraw-Hill Encyclopedia of Science and Technology. V. 11. New York, McGraw-Hill, pp. 52-54 Download PDF
2011
Blackledge TA, Kuntner M, Agnarsson I. 2011. The form and function of spider orb webs: evolution from silk to ecosystems. Advances in Insect Physiology 41: 175-262 Request PDF
Kuntner M, Agnarsson I. 2011. Biogeography and diversification of hermit spiders on Indian Ocean islands (Nephilidae: Nephilengys). Molecular Phylogenetics and Evolution 59: 477-488 Request PDF
Gregorič M, Agnarsson I, Blackledge TA, Kuntner M. 2011. How did the spider cross the river? Behavioral adaptations for river-bridging webs in Caerostris darwini (Araneae: Araneidae). PLoS One 6(10): e26847. doi:10.1371/journal.pone.0026847 Download PDF
Kuntner M, Agnarsson I. 2011. Phylogeography of a successful aerial disperser: the golden orb spider Nephila on Indian Ocean islands. BMC Evolutionary Biology 11: 119 Download PDF
May-Collado LJ, Agnarsson I. 2011. Phylogenetic analysis of conservation priorities for aquatic mammals and their terrestrial relatives. PLoS One 6(7): 1-10, e22562. doi:10.1371/journal.pone.0022562 Download PDF
Agnarsson I, Zambrana-Torrelio CM, Flores Saldaña NP, May-Collado LJ. 2011. A time-calibrated species-level phylogeny of bats (Chiroptera, Mammalia). PLoS Currents: Tree of Life. Version 44. 2011 Jan 4 [revised 2011 Feb 4]. Available from: http://currents.plos.org/treeoflife/article/a-time-calibrated-species-level-3chrbtx927cxs-5/.
Vélez-Zuazo X, Agnarsson I. 2011. Shark tales: A molecular species level phylogeny of sharks (Selachimorpha, Chondrichthyes). Molecular Phylogenetics and Evolution 58: 207-217 Request PDF
Kuntner M, May-Collado L, Agnarsson I. 2011. Phylogeny and conservation priorities of afrotherian mammals (Afrotheria, Mammalia). Zoologica Scripta 40: 1-15. Download PDF
Agnarsson I. 2011. Habitat patch size and isolation as predictors of occupancy and number of Argyrodine spider kleptoparasites in Nephila webs. Naturwissenschaften 98: 163-167 Download PDF
Sobrero R, May-Collado LJ, Agnarsson I, Hernández CE. 2011. Expensive brains: ‘brainy’ rodents have higher metabolic rate. Frontiers in Evolutionary Neuroscience 3(2): 1-12 Download PDF
Gregorič M, Agnarsson I, Blackledge TA, Kuntner M. 2011. Darwin's bark spider: Giant prey in giant orb webs (Caerostris darwini, Araneae: Araneidae)? Journal of Arachnology 39: 287-295 Download PDF
Sensenig A, Agnarsson I, Blackledge TA. 2011. Adult spiders use tougher silk: Ontogenetic changes in web architecture and silk biomechanics in the orb-weaving spider Neoscona arabesca. Journal of Zoology 284: 28-38 Download PDF
Agnarsson I. 2011. Spiders of the Nakanai Mountains, East New Britain Province, Papua New Guinea. In: Rapid biological assessments of the Nakanai Mountains and the upper Strickland Basin: surveying the biodiversity of Papua New Guinea’s sublime karst environments (Richards J and Gamui BK, eds.). RAP Bulletin of Biological Assessment 60: 182-185 Request PDF
Agnarsson I. 2011. Spiders of the Muller Range, Papua New Guinea. In: Rapid biological assessments of the Nakanai Mountains and the upper Strickland Basin: surveying the biodiversity of Papua New Guinea’s sublime karst environments (Richards J and Gamui BK, eds.). RAP Bulletin of Biological Assessment 60: 70-74 Request PDF
2010
Agnarsson I, Avilés L, Maddison WP. 2010. Complete separation along matrilines in a social spider metapopulation inferred from hypervariable mitochondrial DNA region. Molecular Ecology 19: 3052-3063. Download PDF
Agnarsson I, Kuntner M, May-Collado LJ. 2010. Dogs, cats, and kin: a molecular species-level phylogeny of Carnivora. Molecular Phylogenetics and Evolution 54: 726–745. Request PDF
Agnarsson I, Kuntner M, Coddington J, Blackledge TA. 2010. Shifting continents, not behaviours: independent colonization of solitary and subsocial Anelosimus spider lineages on Madagascar (Araneae, Theridiidae). Zoologica Scripta 39: 75-87. Download PDF
Agnarsson I, Kuntner M, Blackledge TA. 2010. Bioprospecting finds the toughest biological material: extraordinary silk from a giant riverine orb. PLoS One 5(9): 1-9. Download PDF
Agnarsson I. 2010. The utility of ITS2 in spider phylogenetics: notes on prior work and an example from Anelosimus. Journal of Arachnology 38: 377-382. Download PDF
Kuntner M, Agnarsson I. 2010. Web gigantism in Darwin's bark spider, a new species from Madagascar (Araneidae: Caerostris). Journal of Arachnology 38: 346-356. Download PDF
Martén-Rodríguez S, Fenster CB, Agnarsson I, Skog LE, Zimmer EA. 2010. Evolutionary breakdown of pollination specialization in a Caribbean plant radiation. New Phytologist 188: 403-417. Download PDF
Sensenig A, Agnarsson I, Blackledge TA. 2010. Behavioral and biomaterial coevolution in spider orb webs. Journal of Evolutionary Biology 23: 1839-1856 *Cover. Download PDF
Sensenig A, Agnarsson I, Gondek T, Blackledge TA. 2010. Webs in vitro and in vivo: Spiders alter their orb web spinning behavior in the laboratory. Journal of Arachnology 38: 183-191. Download PDF
2009
Agnarsson I, Blackledge T. 2009. Can a spider web be too sticky? Tensile mechanics constrain the evolution of capture spiral stickiness in orb weaving spiders. Journal of Zoology 277: 134-140. Download PDF
Agnarsson I, Boutry C, Wong S-C, Baji A, Dhinojwala A, Sensenig AT, Blackledge TA. 2009. Rate dependent supercontraction of spider dragline silk. Zoology 112: 325-331 *Cover. Download PDF
Agnarsson I, Dhinojwala A, Sahni V, Blackledge TA. 2009. Spider silk as a novel high performance biomimetic muscle driven by humidity. Journal of Experimental Biology 212: 1990-1994 *Cover. Download PDF
Blackledge TA, Boutry C, Wong S-C, Baji A, Dhinojwala A, Sahni V, Agnarsson I. 2009. How super is supercontraction? Permanent versus cyclic responses to humidity in spider dragline silk. Journal of Experimental Biology 212: 1981-1989 *Cover. Download PDF
Blackledge T, Coddington JA, Agnarsson I. 2009. Fecundity increase supports adaptive radiation hypothesis in spider web evolution. Communicative & Integrative Biology 2(6): 1-5 *Cover. Download PDF
Blackledge TA, Coddington J, Scharff N, Szuts T, Wenzel J, Hayashi C, Agnarsson I. 2009. Reconstructing web evolution and spider diversification in the molecular era. Proceedings of the National Academy of Sciences of the United States of America 106: 5229-5234. Download PDF
Coddington JA, Agnarsson I, Miller J, Kuntner M, Hormiga G. 2009. Undersampling bias: the null hypothesis for singleton species in tropical arthropod biodiversity surveys. Journal of Animal Ecology 78: 573–584. Download PDF
Kuntner M, Agnarsson I. 2009. Phylogeny accurately predicts behavior in Indian Ocean Clitaetra spiders (Araneae: Nephilidae) Invertebrate Systematics 23: 193-204. Download PDF
Kuntner M, Gregorič M, Agnarsson I. 2009. Spider eunuch phenomenon induced by aggressiveness from rival male or mated female. Journal of Arachnology 37: 266-271. Download PDF
2008
Agnarsson I, Boutry C, Blackledge T. 2008. Spider silk aging: initial improvement in a high performance material followed by slow degradation. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 309A: 494-504. Download PDF
Agnarsson I, Coddington JA. 2008. Quantitative tests of primary homology. Cladistics 24: 51-61. Download PDF
Agnarsson I, May-Collado L. 2008. The phylogeny of Cetartiodactyla: the importance of dense taxon sampling, missing data, and the remarkable promise of Cytochrome b to provide reliablespecies-level phylogenies. Molecular Phylogenetics and Evolution 48: 964-985. Request PDF
Agnarsson I, Miller J. 2008. Is ACCTRAN better than DELTRAN? Cladistics 24: 1032-1038. Download article
Eberhard WG, Agnarsson I, Levi HW. 2008. Web forms and phylogeny of theridiid spider (Araneae: Theridiidae): chaos from order? Systematics and Biodiversity 6: 415-475. Download PDF
2007
Agnarsson I, Coddington JA, Knoflach B. 2007. Morphology and evolution of cobweb spider male genitalia (Araneae: Theridiidae). Journal of Arachnology 35: 334-395 Download PDF
Agnarsson I, Coddington JA, May-Collado LJ. 2007. Elongated pedicillate setae – a putative sensory system and synapomorphy of spiders. Journal of Arachnology 35: 411-426. Download PDF
Agnarsson I, Kuntner M. 2007. Taxonomy in a changing world: seeking solutions for a science in crisis. Systematic Biology 56: 531-539. Download PDF
Agnarsson I, Maddison WP, Avilés L. 2007. The phylogeny of the social Anelosimus spiders (Araneae: Theridiidae) inferred from six molecular loci and morphology. Molecular Phylogenetics and Evolution 43: 833-851. Request PDF
Arnedo MA, Agnarsson I, Gillespie RG. 2007. Molecular insights into the phylogenetic structure of the spider genus Theridion (Araneae, Theridiidae) and the origin of the Hawaiian Theridion-like fauna. Zoologica Scripta 36: 337-352. Download PDF
Avilés L, Agnarsson I, Salazar P, Purcell J, Iturralde G, Yip E, Powers KS, Bukowski T. 2007. Altitudinal pattern of sociality in the spider genus Anelosimus and the biology of a new mid-elevation social species in Ecuador. American Naturalist 170: 783-792. Download PDF
May-Collado LJ, Agnarsson I, Wartzok D. 2007b. A phylogenetic review of tonal sound production in whales. BMC Evolutionary Biology 7: 136. Download PDF
May-Collado LJ, Agnarsson I, Wartzok D. 2007. Reexamining the relationship between body size and tonal signal frequency in whales: a comparative approach using a novel phylogeny. Marine Mammal Science 121: 1203-1212. Download PDF
2006
Agnarsson I. 2006a. Asymmetric female genitalia and other remarkable morphology in a new genus of cobweb spiders (Theridiidae, Araneae) from Madagascar. Biological Journal of the Linnean Society 87: 211-232. Download PDF
Agnarsson I. 2006b. A revision of the New World eximius group of Anelosimus (Araneae, Theridiidae) and a phylogenetic analysis using worldwide exemplars. Zoological Journal of the Linnean Society 146: 453-593. Download PDF
Agnarsson I. 2006c. Phylogenetic placement of Echinotheridion (Araneae: Theridiidae) - do male sexual organ removal, emasculation, and sexual cannibalism in Echinotheridion and Tidarren represent evolutionary replicas? Invertebrate Systematics 20: 415-429. Download PDF
Agnarsson I, Avilés L, Coddington JA, Maddison WP. 2006. Social theridiid spiders – repeated origins of an evolutionary dead-end. Evolution 60: 2342-2351. Download PDF
Agnarsson I, Barrantes G, May-Collado L. 2006. Notes on the biology of Anelosimus pacificus Levi, 1963 (Theridiidae, Araneae) - evidence for an evolutionary reversal to a less social state. Journal of Natural History 40: 2681-2687. Download PDF
Agnarsson I, Coddington JA. 2006. Notes on web and web plasticity and description of the male of Achaearanea heiroglyphica (Mello-Leitão) (Theridiidae, Araneae). Journal of Arachnology 34: 638-641. Download PDF
Agnarsson I, Zhang JX. 2006. New species of Anelosimus (Theridiidae, Araneae) from Southeast Asia and Africa, with notes on sociality and color polymorphism. Zootaxa 1147: 1-34. Request PDF
Avilés L, Maddison WP, Agnarsson I. 2006. Theridion nigroannulatum - an independently-derived highly social spider with explosive colony proliferation and a female size dimorphism. Biotropica 38: 743-753. Download PDF
Coddington JA, Agnarsson I. 2006. Subsociality in Helvibis thorelli (Theridiinae, Theridiidae, Araneae) from French Guiana. Journal of Arachnology 34: 642-645. Download PDF
Kuntner M, Agnarsson I. 2006. Are the Linnean and Phylogenetic Nomenclatural Systems Combinable? Recommendations for Biological Nomenclature. Systematic Biology 55: 774-784. Download PDF
May-Collado L, Agnarsson I, 2006. Cytochrome b and Bayesian inference of whale phylogeny. Molecular Phylogenetics and Evolution 38: 344-354. Download PDF
2005
Agnarsson I. 2005. A revision and phylogenetic analysis of the American ethicus and rupununi groups of Anelosimus (Araneae, Theridiidae). Zoologica Scripta 34: 389–413. Download PDF
Agnarsson I, Kuntner M. 2005. Madagascar: an Unexpected Hotspot of Social Anelosimus Spider Diversity (Araneae: Theridiidae). Systematic Entomology 30: 575-592. Download PDF
Miller JA, Agnarsson I. 2005. A redescription of Chrysso nigriceps (Araneae, Theridiidae) with evidence for maternal care. Journal of Arachnology 33: 711-717. Download PDF
2004
Agnarsson I. 2004. Morphological phylogeny of cobweb spiders and their relatives (Araneae, Araneoidea, Theridiidae). Zoological Journal of the Linnean Society 141: 447-626. Download PDF
Arnedo MA, Coddington J, Agnarsson I, Gillespie RG. 2004. From a comb to a tree: Phylogenetic relationships of the comb-footed spiders (Araneae, Theridiidae) inferred from nuclear and mitochondrial genes. Molecular Phylogenetics and Evolution 31: 225-245. Download PDF
2003
Agnarsson I. 2003a. Spider webs as habitat patches - The distribution of kleptoparasites (Argyrodes, Theridiidae) among host webs (Nephila, Tetragnathidae). Journal of Arachnology 31: 344-349. Download PDF
Agnarsson I. 2003b. The phylogenetic placement and circumscription of the genus Synotaxus (Araneae: Synotaxidae) with a description of a new species from Guyana, and notes on theridioid phylogeny. Invertebrate Systematics 17: 719-734 Download PDF
Ingólfsson A, Agnarsson I. 2003. Amphipods and isopods in the rocky intertidal: Dispersal and movements during high tide. Marine Biology 143: 859-866. Download PDF
2002
Agnarsson I. 2002. Sharing a web - on the relation of sociality and kleptoparasitism in theridiid spiders (Theridiidae, Araneae). Journal of Arachnology 30: 181-188. Download PDF
Whitehouse M, Agnarsson I, Miyashita T, Smith D, Cangialosi K, Masumoto T, Li D, Henaut Y. 2002. Argyrodes: Phylogeny, sociality and interspecific interactions - a report on the Argyrodes symposium, Badplaas 2001. Journal of Arachnology 30: 238-245. Download PDF
1996-2000
Agnarsson I. 2000. Adansonia is a Baobab tree not a theridiid spider. Journal of Arachnology 28: 351-352. Download PDF
Ingolfsson A, Agnarsson I. 1999. Anonyx sarsi: a major unrecognized scavenger and predator in the intertidal zone. Journal of the Marine Biological Association of the United Kingdom 79: 1127-1128. Download PDF
Agnarsson I. 1998. Icelandic harvestmen and pseudoscorpions. Fjölrit Náttúrufræðistofnunar 35: 36 pages, 19 figures. Contact author for reprints
Agnarsson I. 1996. Icelandic spiders. Fjölrit Náttúrufræðistofnunar 31: 175 pages, 169 figures. Download PDF
Report
May-Collado LJ, Agnarsson I, Palacios JD, Taubitz E, Wartzok D. 2007. The status of the bottlenose dolphin (Tursiops truncatus) population of Bocas del Toro, Panama: Preliminary results based on a three year ongoing study. Online at: http://www.fundacionketo.org/PDF/IRLJMC-KETOBocas.pdf
Agnarsson I, Kuntner M. 2012. The Generation of a Biodiversity Hotspot: Biogeography and Phylogeography of the Western Indian Ocean Islands. In Kesara Anamthawat-Jonsson (Ed.): Current Topics in Phylogenetics and Phylogeography of Terrestrial and Aquatic Systems. Rijeka: In Tech Publishers, pp. 33-82. ISBN 978-953-51-0217-5. Access
May-Collado, L.J. and J. Forcada. 2012. Small-scale estimation of relative abundance for the coastal spotted dolphins (Stenella attenuata) in Costa Rica: the effect of habitat and seasonality. Revista de Biologia Tropical 60(2): 133-142.
Blackledge TA, Kuntner M, Agnarsson I. 2012. Biomaterial evolution parallels behavioral innovation in the origin of orb-like spider webs. Scientific Reports 2: 833. Access
Grinsted L, Agnarsson I, Bilde T. 2012. Mixed-species colonies of theridiid spiders show extended maternal care and interspecific brood adoption. Naturwissenschaften 99: 1021-1030 DOI 10.1007/s00114-012-0983-4 Download PDF
García-Espinoza F, Martínez MT, Sánchez FJ, Yusseff-Vanegas SZ. 2012. Desarrollo larval y requerimientos calóricos de Chrysomya rufifacies (Diptera: Calliphoridae) durante primavera y verano en Torreón, Coahuila. Acta Zoológica Mexicana 28 (1) xxx-xxx (in press).
Agnarsson I. 2012. Systematics of new subsocial and solitary Australasian Anelosimus species (Araneae, Theridiidae). Invertebrate Systematics 26: 1-16. Download PDF
Agnarsson I. 2012. A new phylogeny of Anelosimus and the placement and behavior of Anelosimus vierae n. sp. from Uruguay (Araneae: Theridiidae). Journal of Arachnology 40: 78-84 Download PDF
Agnarsson I, Kuntner M, Blackledge TA. Darwin’s bark spider. 2012. In: McGraw-Hill Encyclopedia of Science and Technology. V. 11. New York, McGraw-Hill, pp. 52-54 Download PDF
2011
Blackledge TA, Kuntner M, Agnarsson I. 2011. The form and function of spider orb webs: evolution from silk to ecosystems. Advances in Insect Physiology 41: 175-262 Request PDF
Kuntner M, Agnarsson I. 2011. Biogeography and diversification of hermit spiders on Indian Ocean islands (Nephilidae: Nephilengys). Molecular Phylogenetics and Evolution 59: 477-488 Request PDF
Gregorič M, Agnarsson I, Blackledge TA, Kuntner M. 2011. How did the spider cross the river? Behavioral adaptations for river-bridging webs in Caerostris darwini (Araneae: Araneidae). PLoS One 6(10): e26847. doi:10.1371/journal.pone.0026847 Download PDF
Kuntner M, Agnarsson I. 2011. Phylogeography of a successful aerial disperser: the golden orb spider Nephila on Indian Ocean islands. BMC Evolutionary Biology 11: 119 Download PDF
May-Collado LJ, Agnarsson I. 2011. Phylogenetic analysis of conservation priorities for aquatic mammals and their terrestrial relatives. PLoS One 6(7): 1-10, e22562. doi:10.1371/journal.pone.0022562 Download PDF
Agnarsson I, Zambrana-Torrelio CM, Flores Saldaña NP, May-Collado LJ. 2011. A time-calibrated species-level phylogeny of bats (Chiroptera, Mammalia). PLoS Currents: Tree of Life. Version 44. 2011 Jan 4 [revised 2011 Feb 4]. Available from: http://currents.plos.org/treeoflife/article/a-time-calibrated-species-level-3chrbtx927cxs-5/.
Vélez-Zuazo X, Agnarsson I. 2011. Shark tales: A molecular species level phylogeny of sharks (Selachimorpha, Chondrichthyes). Molecular Phylogenetics and Evolution 58: 207-217 Request PDF
Kuntner M, May-Collado L, Agnarsson I. 2011. Phylogeny and conservation priorities of afrotherian mammals (Afrotheria, Mammalia). Zoologica Scripta 40: 1-15. Download PDF
Agnarsson I. 2011. Habitat patch size and isolation as predictors of occupancy and number of Argyrodine spider kleptoparasites in Nephila webs. Naturwissenschaften 98: 163-167 Download PDF
Sobrero R, May-Collado LJ, Agnarsson I, Hernández CE. 2011. Expensive brains: ‘brainy’ rodents have higher metabolic rate. Frontiers in Evolutionary Neuroscience 3(2): 1-12 Download PDF
Gregorič M, Agnarsson I, Blackledge TA, Kuntner M. 2011. Darwin's bark spider: Giant prey in giant orb webs (Caerostris darwini, Araneae: Araneidae)? Journal of Arachnology 39: 287-295 Download PDF
Sensenig A, Agnarsson I, Blackledge TA. 2011. Adult spiders use tougher silk: Ontogenetic changes in web architecture and silk biomechanics in the orb-weaving spider Neoscona arabesca. Journal of Zoology 284: 28-38 Download PDF
Agnarsson I. 2011. Spiders of the Nakanai Mountains, East New Britain Province, Papua New Guinea. In: Rapid biological assessments of the Nakanai Mountains and the upper Strickland Basin: surveying the biodiversity of Papua New Guinea’s sublime karst environments (Richards J and Gamui BK, eds.). RAP Bulletin of Biological Assessment 60: 182-185 Request PDF
Agnarsson I. 2011. Spiders of the Muller Range, Papua New Guinea. In: Rapid biological assessments of the Nakanai Mountains and the upper Strickland Basin: surveying the biodiversity of Papua New Guinea’s sublime karst environments (Richards J and Gamui BK, eds.). RAP Bulletin of Biological Assessment 60: 70-74 Request PDF
2010
Agnarsson I, Avilés L, Maddison WP. 2010. Complete separation along matrilines in a social spider metapopulation inferred from hypervariable mitochondrial DNA region. Molecular Ecology 19: 3052-3063. Download PDF
Agnarsson I, Kuntner M, May-Collado LJ. 2010. Dogs, cats, and kin: a molecular species-level phylogeny of Carnivora. Molecular Phylogenetics and Evolution 54: 726–745. Request PDF
Agnarsson I, Kuntner M, Coddington J, Blackledge TA. 2010. Shifting continents, not behaviours: independent colonization of solitary and subsocial Anelosimus spider lineages on Madagascar (Araneae, Theridiidae). Zoologica Scripta 39: 75-87. Download PDF
Agnarsson I, Kuntner M, Blackledge TA. 2010. Bioprospecting finds the toughest biological material: extraordinary silk from a giant riverine orb. PLoS One 5(9): 1-9. Download PDF
Agnarsson I. 2010. The utility of ITS2 in spider phylogenetics: notes on prior work and an example from Anelosimus. Journal of Arachnology 38: 377-382. Download PDF
Kuntner M, Agnarsson I. 2010. Web gigantism in Darwin's bark spider, a new species from Madagascar (Araneidae: Caerostris). Journal of Arachnology 38: 346-356. Download PDF
Martén-Rodríguez S, Fenster CB, Agnarsson I, Skog LE, Zimmer EA. 2010. Evolutionary breakdown of pollination specialization in a Caribbean plant radiation. New Phytologist 188: 403-417. Download PDF
Sensenig A, Agnarsson I, Blackledge TA. 2010. Behavioral and biomaterial coevolution in spider orb webs. Journal of Evolutionary Biology 23: 1839-1856 *Cover. Download PDF
Sensenig A, Agnarsson I, Gondek T, Blackledge TA. 2010. Webs in vitro and in vivo: Spiders alter their orb web spinning behavior in the laboratory. Journal of Arachnology 38: 183-191. Download PDF
2009
Agnarsson I, Blackledge T. 2009. Can a spider web be too sticky? Tensile mechanics constrain the evolution of capture spiral stickiness in orb weaving spiders. Journal of Zoology 277: 134-140. Download PDF
Agnarsson I, Boutry C, Wong S-C, Baji A, Dhinojwala A, Sensenig AT, Blackledge TA. 2009. Rate dependent supercontraction of spider dragline silk. Zoology 112: 325-331 *Cover. Download PDF
Agnarsson I, Dhinojwala A, Sahni V, Blackledge TA. 2009. Spider silk as a novel high performance biomimetic muscle driven by humidity. Journal of Experimental Biology 212: 1990-1994 *Cover. Download PDF
Blackledge TA, Boutry C, Wong S-C, Baji A, Dhinojwala A, Sahni V, Agnarsson I. 2009. How super is supercontraction? Permanent versus cyclic responses to humidity in spider dragline silk. Journal of Experimental Biology 212: 1981-1989 *Cover. Download PDF
Blackledge T, Coddington JA, Agnarsson I. 2009. Fecundity increase supports adaptive radiation hypothesis in spider web evolution. Communicative & Integrative Biology 2(6): 1-5 *Cover. Download PDF
Blackledge TA, Coddington J, Scharff N, Szuts T, Wenzel J, Hayashi C, Agnarsson I. 2009. Reconstructing web evolution and spider diversification in the molecular era. Proceedings of the National Academy of Sciences of the United States of America 106: 5229-5234. Download PDF
Coddington JA, Agnarsson I, Miller J, Kuntner M, Hormiga G. 2009. Undersampling bias: the null hypothesis for singleton species in tropical arthropod biodiversity surveys. Journal of Animal Ecology 78: 573–584. Download PDF
Kuntner M, Agnarsson I. 2009. Phylogeny accurately predicts behavior in Indian Ocean Clitaetra spiders (Araneae: Nephilidae) Invertebrate Systematics 23: 193-204. Download PDF
Kuntner M, Gregorič M, Agnarsson I. 2009. Spider eunuch phenomenon induced by aggressiveness from rival male or mated female. Journal of Arachnology 37: 266-271. Download PDF
2008
Agnarsson I, Boutry C, Blackledge T. 2008. Spider silk aging: initial improvement in a high performance material followed by slow degradation. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 309A: 494-504. Download PDF
Agnarsson I, Coddington JA. 2008. Quantitative tests of primary homology. Cladistics 24: 51-61. Download PDF
Agnarsson I, May-Collado L. 2008. The phylogeny of Cetartiodactyla: the importance of dense taxon sampling, missing data, and the remarkable promise of Cytochrome b to provide reliablespecies-level phylogenies. Molecular Phylogenetics and Evolution 48: 964-985. Request PDF
Agnarsson I, Miller J. 2008. Is ACCTRAN better than DELTRAN? Cladistics 24: 1032-1038. Download article
Eberhard WG, Agnarsson I, Levi HW. 2008. Web forms and phylogeny of theridiid spider (Araneae: Theridiidae): chaos from order? Systematics and Biodiversity 6: 415-475. Download PDF
2007
Agnarsson I, Coddington JA, Knoflach B. 2007. Morphology and evolution of cobweb spider male genitalia (Araneae: Theridiidae). Journal of Arachnology 35: 334-395 Download PDF
Agnarsson I, Coddington JA, May-Collado LJ. 2007. Elongated pedicillate setae – a putative sensory system and synapomorphy of spiders. Journal of Arachnology 35: 411-426. Download PDF
Agnarsson I, Kuntner M. 2007. Taxonomy in a changing world: seeking solutions for a science in crisis. Systematic Biology 56: 531-539. Download PDF
Agnarsson I, Maddison WP, Avilés L. 2007. The phylogeny of the social Anelosimus spiders (Araneae: Theridiidae) inferred from six molecular loci and morphology. Molecular Phylogenetics and Evolution 43: 833-851. Request PDF
Arnedo MA, Agnarsson I, Gillespie RG. 2007. Molecular insights into the phylogenetic structure of the spider genus Theridion (Araneae, Theridiidae) and the origin of the Hawaiian Theridion-like fauna. Zoologica Scripta 36: 337-352. Download PDF
Avilés L, Agnarsson I, Salazar P, Purcell J, Iturralde G, Yip E, Powers KS, Bukowski T. 2007. Altitudinal pattern of sociality in the spider genus Anelosimus and the biology of a new mid-elevation social species in Ecuador. American Naturalist 170: 783-792. Download PDF
May-Collado LJ, Agnarsson I, Wartzok D. 2007b. A phylogenetic review of tonal sound production in whales. BMC Evolutionary Biology 7: 136. Download PDF
May-Collado LJ, Agnarsson I, Wartzok D. 2007. Reexamining the relationship between body size and tonal signal frequency in whales: a comparative approach using a novel phylogeny. Marine Mammal Science 121: 1203-1212. Download PDF
2006
Agnarsson I. 2006a. Asymmetric female genitalia and other remarkable morphology in a new genus of cobweb spiders (Theridiidae, Araneae) from Madagascar. Biological Journal of the Linnean Society 87: 211-232. Download PDF
Agnarsson I. 2006b. A revision of the New World eximius group of Anelosimus (Araneae, Theridiidae) and a phylogenetic analysis using worldwide exemplars. Zoological Journal of the Linnean Society 146: 453-593. Download PDF
Agnarsson I. 2006c. Phylogenetic placement of Echinotheridion (Araneae: Theridiidae) - do male sexual organ removal, emasculation, and sexual cannibalism in Echinotheridion and Tidarren represent evolutionary replicas? Invertebrate Systematics 20: 415-429. Download PDF
Agnarsson I, Avilés L, Coddington JA, Maddison WP. 2006. Social theridiid spiders – repeated origins of an evolutionary dead-end. Evolution 60: 2342-2351. Download PDF
Agnarsson I, Barrantes G, May-Collado L. 2006. Notes on the biology of Anelosimus pacificus Levi, 1963 (Theridiidae, Araneae) - evidence for an evolutionary reversal to a less social state. Journal of Natural History 40: 2681-2687. Download PDF
Agnarsson I, Coddington JA. 2006. Notes on web and web plasticity and description of the male of Achaearanea heiroglyphica (Mello-Leitão) (Theridiidae, Araneae). Journal of Arachnology 34: 638-641. Download PDF
Agnarsson I, Zhang JX. 2006. New species of Anelosimus (Theridiidae, Araneae) from Southeast Asia and Africa, with notes on sociality and color polymorphism. Zootaxa 1147: 1-34. Request PDF
Avilés L, Maddison WP, Agnarsson I. 2006. Theridion nigroannulatum - an independently-derived highly social spider with explosive colony proliferation and a female size dimorphism. Biotropica 38: 743-753. Download PDF
Coddington JA, Agnarsson I. 2006. Subsociality in Helvibis thorelli (Theridiinae, Theridiidae, Araneae) from French Guiana. Journal of Arachnology 34: 642-645. Download PDF
Kuntner M, Agnarsson I. 2006. Are the Linnean and Phylogenetic Nomenclatural Systems Combinable? Recommendations for Biological Nomenclature. Systematic Biology 55: 774-784. Download PDF
May-Collado L, Agnarsson I, 2006. Cytochrome b and Bayesian inference of whale phylogeny. Molecular Phylogenetics and Evolution 38: 344-354. Download PDF
2005
Agnarsson I. 2005. A revision and phylogenetic analysis of the American ethicus and rupununi groups of Anelosimus (Araneae, Theridiidae). Zoologica Scripta 34: 389–413. Download PDF
Agnarsson I, Kuntner M. 2005. Madagascar: an Unexpected Hotspot of Social Anelosimus Spider Diversity (Araneae: Theridiidae). Systematic Entomology 30: 575-592. Download PDF
Miller JA, Agnarsson I. 2005. A redescription of Chrysso nigriceps (Araneae, Theridiidae) with evidence for maternal care. Journal of Arachnology 33: 711-717. Download PDF
2004
Agnarsson I. 2004. Morphological phylogeny of cobweb spiders and their relatives (Araneae, Araneoidea, Theridiidae). Zoological Journal of the Linnean Society 141: 447-626. Download PDF
Arnedo MA, Coddington J, Agnarsson I, Gillespie RG. 2004. From a comb to a tree: Phylogenetic relationships of the comb-footed spiders (Araneae, Theridiidae) inferred from nuclear and mitochondrial genes. Molecular Phylogenetics and Evolution 31: 225-245. Download PDF
2003
Agnarsson I. 2003a. Spider webs as habitat patches - The distribution of kleptoparasites (Argyrodes, Theridiidae) among host webs (Nephila, Tetragnathidae). Journal of Arachnology 31: 344-349. Download PDF
Agnarsson I. 2003b. The phylogenetic placement and circumscription of the genus Synotaxus (Araneae: Synotaxidae) with a description of a new species from Guyana, and notes on theridioid phylogeny. Invertebrate Systematics 17: 719-734 Download PDF
Ingólfsson A, Agnarsson I. 2003. Amphipods and isopods in the rocky intertidal: Dispersal and movements during high tide. Marine Biology 143: 859-866. Download PDF
2002
Agnarsson I. 2002. Sharing a web - on the relation of sociality and kleptoparasitism in theridiid spiders (Theridiidae, Araneae). Journal of Arachnology 30: 181-188. Download PDF
Whitehouse M, Agnarsson I, Miyashita T, Smith D, Cangialosi K, Masumoto T, Li D, Henaut Y. 2002. Argyrodes: Phylogeny, sociality and interspecific interactions - a report on the Argyrodes symposium, Badplaas 2001. Journal of Arachnology 30: 238-245. Download PDF
1996-2000
Agnarsson I. 2000. Adansonia is a Baobab tree not a theridiid spider. Journal of Arachnology 28: 351-352. Download PDF
Ingolfsson A, Agnarsson I. 1999. Anonyx sarsi: a major unrecognized scavenger and predator in the intertidal zone. Journal of the Marine Biological Association of the United Kingdom 79: 1127-1128. Download PDF
Agnarsson I. 1998. Icelandic harvestmen and pseudoscorpions. Fjölrit Náttúrufræðistofnunar 35: 36 pages, 19 figures. Contact author for reprints
Agnarsson I. 1996. Icelandic spiders. Fjölrit Náttúrufræðistofnunar 31: 175 pages, 169 figures. Download PDF
Report
May-Collado LJ, Agnarsson I, Palacios JD, Taubitz E, Wartzok D. 2007. The status of the bottlenose dolphin (Tursiops truncatus) population of Bocas del Toro, Panama: Preliminary results based on a three year ongoing study. Online at: http://www.fundacionketo.org/PDF/IRLJMC-KETOBocas.pdf
