Nachweis vonColeosoma floridanumin Deutschland (Araneae: Theridiidae)

‘Rectangular orb’ webs of Synotaxus (Araneae: Theridiidae)

Morphology and Evolution of Cobweb Spider Male Genitalia (araneae, Theridiidae)

This study elucidates the homology of elements of the male palps in the spider family Theridiidae. We survey and illustrate 60 species from 29 out of the 86 currently recognized genera representing all subfamilies. The study is buttressed by a phylogenetic framework, and uses a new method to evaluate critically competing homology hypotheses based on various criteria. Among the classic criteria ...

New Species of Endemic Kleptoparasitic Spiders of the Genus Argyrodes (Araneae: Theridiidae) in the Hawaiian Islands

This study examined the endemic species of kleptoparasitic spiders in the genus Argyrodes from the Hawaiian Islands, a lineage previously known in the archipelago from only a single described species, Argyrodes hawaiiensis Simon. Here, two additional endemic species are described, A. ilipoepoe Rivera and Gillespie, n. sp., and A. laha Rivera and Gillespie, n. sp., with their biogeographical pat...

The first species of the spider genus Episinus in Colombia (Araneae, Theridiidae).

The spider family Theridiidae Sundevall, 1833 is currently represented by 121 genera and 2,387 species distributed worldwide (Platnick, 2014), of which 52 genera are recorded in the Neotropical region. The genus Episinus Latreille, 1809 has 57 described species but only 29 (50.8%) are known by both sexes (Platnick, 2014). The type species of the genus, E. truncatus Latreille, 1809, was describe...

First male sperm precedence in multiply-mated females of the cooperative spider Anelosimus studiosus (Araneae, Theridiidae)

Patterns of sperm usage in multiply-mated females have profound fitness consequences for males, and create strong selective pressure on male behavior. In the cooperative theridiid spider Anelosimus studiosus Hentz 1850 adult males are tolerated in females’ webs, and females have been observed to mate multiply with different males. In this experiment, virgin females were mated with two different...