Morphology of new Indian/Indonesian Gamasotnorpha and Xestaspis species (Araneae: Oonopidae)

摘要

The oonopid genera Gamasomorpha and Xestaspis are very diverse and differ only by the shape of the booklung covers. New Indian/Indonesian Gamasomorpha and Xestaspis species, characterized by sternal furrows consisting of large, droplike pits are described. Fourteen species are newly described (G. asterobothros n. sp., G. keri n. sp., G petoteca n. sp., G. insomnia n. sp., G. ophirian. sp., G squalens n. sp., G coniacris n. sp., G. raya n. sp., G. fricki n. sp., G. schmilingi n. sp., X. kandyn. sp., Xpaulina n. sp., X. semengoh n. sp., X. biflocci n. sp.); two species are redescribed (G. seximpressa and G taprobanicd). The high significance of somatic features for species identification, the degree of intraspecific variation and the complexity of the female genitalia are remarkable. The current work suggests that a phylogenetic revision of the genera Gamasomorpha and Xestaspis and an examination of the validity of the shape of the booklung covers of these two genera are needed.