New species of lizards from Auyantepui and La Escalera in the Venezuelan Guayana, with notes on "microteiid" hemipenes (Squamata, Gymnophthalmidae). (American Museum novitates, no. 3660)

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dc.contributor.authorMyers, Charles W.
dc.contributor.authorRivas Fuenmayor, Gilson.
dc.contributor.authorJadin, Robert C.
dc.date.accessioned2009-09-04T14:49:20Z
dc.date.available2009-09-04T14:49:20Z
dc.date.issued2009
dc.description31 p. : ill. (some col.) ; 26 cm. "August 28, 2009." Abstract also in Spanish. Includes bibliographical references (p. 29-31).en
dc.description.abstractNames are provided for two montane gymnophthalmid lizards that have been long known from the Venezuelan Guayana, but that were not described by other workers because specimens had been lost. Euspondylus auyanensis, new species ‪(‬= Anadia sp. auctorum‪)‬, is known only from the summit of Auyantepui, where it was originally discovered by S. Gorzula in 1984; a later specimen, the holotype, was collected by Renaud Boistel in 1998. The monophyly of Euspondylus has not been established and the generic assignment is tentative. Anadia escalerae, new species, is based on a specimen obtained by John Cadle in 1980, in the region of La Escalera, to the east of Auyantepui. It agrees with Anadia sensu stricto in being a slender attenuate lizard, but is unusual in having weakly keeled ‪(‬vs. smooth‪)‬ dorsal scales and in having the prefrontals separated by an azygous scale. The last condition also occurs in the holotype of A. pariaensis from the Península de Paria, about 500 km NNW of La Escalera; although differing in several characters, they may be sister species. A new specimen of the rare Anadia blakei ‪(‬from Cerro Humo, Península de Paria‪)‬, is described and illustrated. It is a robust lizard, markedly different in habitus from Anadia sensu stricto. Commentary is provided on the usefulness of hemipenial data in gymnophthalmid systematics. The hemipenes of Euspondylus auyanensis, Anadia blakei, and A. ocellata are described and illustrated. The Guayana endemic genus Adercosaurus is provisionally assigned to the subfamily Alopoglossinae based on hemipenial and other resemblances to Ptychoglossus.en
dc.format.extent12646076 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5983
dc.language.isoen_USen
dc.publisherNew York, NY : American Museum of Natural History.en
dc.relation.ispartofseriesAmerican Museum novitates, no. 3660.en
dc.relation.ispartofseriesen
dc.subjectEuspondylus auyanensis.en
dc.subjectAnadia escalerae.en
dc.subjectAnadia blakei.en
dc.subjectLizards.en
dc.subjectVenezuela.en
dc.titleNew species of lizards from Auyantepui and La Escalera in the Venezuelan Guayana, with notes on "microteiid" hemipenes (Squamata, Gymnophthalmidae). (American Museum novitates, no. 3660)en
dc.title.alternativeLizards from the Venezuelan Guayana.en
dc.typeBooken

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