Some new theraphosids from western Mexico (araneae, mygalomorphae)

摘要

Theraphosidae, the largest family of mygalomorph spiders, has been poorly studied in Mexico. Mexican material collected by N. M. Palomera in 1996 and sent to the author did not resemble any known theraphosid species. Both classifications of Raven (1985) and PerezMiles et al. (1996) were followed when making taxa determinations. Examination of specimens suggests they represent two new species in the subfamily Theraphosinae, as the male palpal bulbs exhibit the large subtegulum and keels and both new species possess Type III urticating setae diagnostic of that subfamily (Cooke et al., 1972; Valerio, 1982; Raven, 1985; PerezoMiles et al., 1996). Hapalopus is similar to the theraphosid genus Cyclosternum; however, both the male embolus and the female spermathecal morphology are different. Specimens found and photographed by the author in 1998 confirm the existence of these small and distinctly colored new theraphosid spiders, from western Mexico.