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Lab Publications


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Recent REVIEWS
SPIDER SYSTEMATICS
ORBWEBS AND SILK
INDIAN OCEAN BIOGEOGRAPHY
EUNUCH PHENOMENON
INTERMEDIATE DISPERSAL HYPOTHESIS
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Check out this coverage of our field expedition in Madagascar 2017 [story, video]



2023

Agnarsson I. 2023. Grand challenges in research on arachnid diversity, conservation, and biogeography. Frontiers in Arachnid Science xx:xxx.

Agnarsson I, Goodnight C, Higgins L. 2023. Developmental asynchrony: a potential cost of extreme sexual size dimorphism in seasonal environments. Journal of Arachnology xx-xxx.

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 xx-xxx.

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 xx: xxx-xxx.

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 xx: xxx-xxx.


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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
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2018
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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
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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

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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

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  
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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
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