期刊名称：Bulletin of the American Museum of Natural History
印刷版ISSN：0003-0090
电子版ISSN：1937-3546
出版年度：2009
卷号：1
出版社：American Museum of Natural History
摘要：A new genus, Escaphiella, is established for a group of 36 oonopid species found from the United States south to Chile and Argentina. The previously known species had been placed in Scaphiella Simon, and Escaphiella is hypothesized to be the sister group of that genus. Members of the two groups share a laterally extended ventral abdominal scutum and a distinctive female genitalic conformation, but differ in cheliceral shape and setation, female palpal tarsal shape, male and female palpal tarsal setation, embolus form, and posterior respiratory structure. At least seven species of Escaphiella are characterized by the highly unusual occurrence of asymmetry between the right and left male pedipalps. In at least eight species, the right and left posterior median spinnerets are fused into a single median projection, or even lost entirely. Nine specific names are transferred from Scaphiella: S. hespera Chamberlin (chosen as the type species), S. litoris Chamberlin, S. juvenilis (Gertsc...
