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| A revision of the tranquillus and speciosus groups of the spider genus Trachelas (Araneae, Clubionidae) in North and Central America. American Museum novitates ; no. 2553 |
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| Title: | A revision of the tranquillus and speciosus groups of the spider genus Trachelas (Araneae, Clubionidae) in North and Central America. American Museum novitates ; no. 2553 |
| Authors: | Platnick, Norman I. Shadab, Mohammad Umar. |
| Issue Date: | 1974 |
| Publisher: | New York, N.Y. : American Museum of Natural History |
| Series/Report no.: | American Museum novitates ; no. 2553 |
| Abstract: | "The tranquillus and speciosus groups of Trachelas, and the 20 species from North and Central America placed in them, are diagnosed and described. In both groups the male embolus is a separate sclerite and the internal female genitalia have anteriorly folded lateral ducts. As defined, the tranquillus group includes those species in which the male embolus has a coiled base and the internal female genitalia have large, regularly coiled median ducts, whereas the speciosus group contains those species whose males lack a coiled embolar base and whose females have small, irregularly coiled median ducts. Keys to the species, illustrations and scanning electron micrographs of somatic and genitalic characters, locality lists, maps, and notes on natural history are provided. The affinities of the genus and its species groups, the associations of these spiders with man, the relative abundance of teratological specimens, difficulties in matching sexes, problems in nomenclature, and the use of leg ... |
| Description: | 34 p. : ill., maps ; 26 cm. Includes bibliographical references (p. 34). |
| URI: | http://hdl.handle.net/2246/5449 |
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