New Genera and Species of Cribellate Coelotine Spiders from California (Araneae: Amaurobiidae)

摘要

Two new amaurobiid genera, and three new species, are described from California. Parazanomys, with its single species, P. thyasionnes, is known from a few localities in Tulare County, and Cavernocymbium, which includes C. vetteri and C. prentoglei, from the Mojave Desert area. These small cribellate spiders exhibit very unusual genitalia, with complex retrolateral furrows on the male cymbium, a tripartite retro-lateral tibial apophysis, and long coiled copulatory ducts in the vulva. On the basis of several synapomorphies with Draconarius Ovtchinnikov 1999 and related genera, these spiders are considered members of the Coelotinae. These genera also appear to be related to the amaurobiid genus Zanomys Chamberlin 1948, which is transferred to the Coelotinae. Being cribellates, the zanomyines appear to be basalmost coelotines, and thus force a reinterpretation of Wang's (2002) phylogenetic analysis.