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| Hemipenial morphology of the South American xenodontine snakes : with a proposal for a monophyletic Xenodontinae and a reappraisal of colubroid hemipenes. Bulletin of the AMNH ; no. 240 |
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| Title: | Hemipenial morphology of the South American xenodontine snakes : with a proposal for a monophyletic Xenodontinae and a reappraisal of colubroid hemipenes. Bulletin of the AMNH ; no. 240 |
| Other Titles: | Hemipenial morphology of xenodontine snakes |
| Authors: | Zaher, Hussam. |
| Issue Date: | 1999 |
| Publisher: | [New York] : American Museum of Natural History |
| Series/Report no.: | Bulletin of the American Museum of Natural History ; no. 240 |
| Abstract: | "The New World xenodontine 'colubrids' represent two immunologically distinct assemblages--the Central and South American lineages, neither of which has been well diagnosed to date. I follow this nomenclature and recognize the Central American lineage as containing 22 genera. This clade is supported by the synapomorphy of a sulcus spermaticus bifurcating within or at the base of the capitulum (Cadle, 1984; Myers and Cadle, 1994). The remaining xenodontines constitute a total of 68 presently recognized genera, of which 41 are placed in the subfamily Xenodontinae sensu stricto. The other 27 genera are considered incertae sedis, pending further research. The Xenodontinae sensu stricto are hypothesized as being monophyletic on the basis of the following hemipenial synapomorphies: (1) presence of enlarged lateral spines on the hemipenial body, and (2) two distinctly ornamented regions on the lobes, the asulcate surface bearing enlarged spinulate or papillate calyces (= body calyces). Some t... |
| Description: | 168 p. : ill. ; 26 cm. Includes bibliographical references (p. 84-95). |
| URI: | http://hdl.handle.net/2246/1646 |
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