标题：Revision and cladistic analysis of the orbweaving spider genus Cyrtognatha Keyserling, 1881 (Araneae, Tetragnathidae) (Bulletin of the American Museum of Natural History, no. 317)
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：The Neotropical spiders of the orbweaving genus Cyrtognatha Keyserling, 1881 (Tetragnathidae) are monographed. Cyrtognatha now includes a total of 21 species distributed over a large part of South America, Central America, and the southern parts of North America. Several species are known from the Caribbean islands of Cuba (one species), Hispaniola (two species), Jamaica (one species), and Saint Vincent (one species). Despite the wide geographic distribution of the genus, most Cyrtognatha species are known from single localities and often from very few museum specimens. The web architecture of several Cyrtognatha species is described and illustrated for the first time. Adults and juveniles of Cyrtognatha can be easily distinguished from all other tetragnathids by the presence of a straight line of long and robust macrosetae with enlarged bases on the retrolateral surface of the PLS. In Cyrtognatha the spermathecae are reduced and the sperm storage function is undert...
关键词：Cyrtognatha.
Spider webs.
Spiders.
Latin America.
