A new genus for Andean snakes related to Lygophis boursieri and a new species (Colubridae). American Museum novitates ; no. 2522

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dc.contributor.authorMyers, Charles W.en_US
dc.date.accessioned2005-10-06T16:35:53Z
dc.date.available2005-10-06T16:35:53Z
dc.date.issued1973en_US
dc.description37 p. : ill., map ; 24 cm.en_US
dc.descriptionIncludes bibliographical references (p. 35-37).en_US
dc.description.abstract"Saphenophis, new genus, accommodates five species of South American colubrid snakes: Dromicus boursieri Jan and Sordelli (type species), Liophis atahuallpae Steindachner, Rhadinaea antioquiensis Dunn, Rhadinaea tristriatus Rendahl and Vestergren, and Saphenophis sneiderni, new species (from southwestern Colombia). These are defined and diagnosed, and placed in two species groups. No support is given a recent suggestion that the type species (boursieri) may be closely allied with some West Indian snakes (Antillophis Maglio, 1970). Saphenophis belongs with an undefined group of New World colubrid genera characterized by a usually bilobed, spinose hemipenis that is distally calyculate and noncapitate or semicapitate (but lobes not contained within single capitulum), with a deeply forked sulcus spermaticus. It is suggested that this type of hemipenis is more primitive than the single or slightly bilobated type in which the entire calyculate area is contained within a single capitulum and bifurcation of the sulcus spermaticus is reduced. Saphenophis boursieri occurs on both Pacific and Atlantic drainages; it possibly adapted to a wide range of environments in the course of vertical habitat displacement during Pleistocene glaciation. Other species of Saphenophis are thought to be isolates differentiated from stock(s) fragmented by upward displacement of montane habitats, in a drier postglacial period. Thus, evolution of some or all the species is suggested to have occurred fairly recently in the Quaternary"--P. [1].en_US
dc.format.extent6078155 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/2728
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, N.Y. : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 2522en_US
dc.subject.lccQL1 .A436 no.2522, 1973en_US
dc.subject.lcshSaphenophisen_US
dc.subject.lcshSaphenophis sneidernien_US
dc.subject.lcshColubridae -- Evolution -- South America.en_US
dc.subject.lcshSnakes -- Colombiaen_US
dc.subject.lcshSnakes -- Ecuadoren_US
dc.subject.lcshSnakes -- Andes Regionen_US
dc.subject.lcshReptiles -- Colombiaen_US
dc.subject.lcshReptiles -- Ecuadoren_US
dc.subject.lcshReptiles -- Andes Regionen_US
dc.titleA new genus for Andean snakes related to Lygophis boursieri and a new species (Colubridae). American Museum novitates ; no. 2522en_US
dc.title.alternativeAndean snakesen_US
dc.typetexten_US

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