Two new North AmericanTheridionspecies (Araneae: Theridiidae)

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

Two new spider species of the genus Chrysso O. P.-Cambridge, 1882 (Araneae, Theridiidae) in Hainan Island, China

Two new spider species of the genus Chrysso O. P.-Cambridge, 1882 are reported from Hainan Island, China, Chrysso bifurcasp. n. (male, female) and Chrysso bicuspidatasp.n. (male, female). Chrysso bimaculata Yoshida, 1998is recorded from China for the first time.

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...

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 records of three latrodectus species found in khorasan province (araneae: theridiidae)

three threidiid spiders of the genus latrodectus occur in khorasan province: l.tredecimguttatus, l.pallidus, l.dahli. the three are described, their diagnostic features are illustrated, and taxonomic notes are given where possible. spider bites are very common in these regions, so, further notes about the medical importance of these species are given. a dichotomic key to the species of the genu...