Dendrophidion nuchale (PETERS, 1863)
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Dendrophidion nuchale
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| Higher Taxa | Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Peters' Forest Racer S: Culebra terrestre |
| Synonym | Herpetodryas nuchalis PETERS 1863: 285 Dendrophidion clarkii DUNN 1933: 78 (fide LIEB 1988) Dendrophidion dendrophis — ROZE 1952: 99 Dendrophidion vinitor — WILSON 1966 Drymobius percarinatus — LANCINI 1979 Dendrophidion dendrophis — PETERS & OREJAS-MIRANDA 1970: 80 Dendrophidion nuchalis — BAUER et al. 1995: 72 Dendrophidion nuchale — KORNACKER 1999 Dendrophidion nuchale — ESQUEDA et al. 2001 Dendrophidion nuchale — WILSON & MCCRANIE 2002 Dendrophidion nuchalis — CARRERA et al. 2009 Dendrophidion clarkii — MCCRANIE 2011 Dendrophidion nuchale — WALLACH et al. 2014: 225 |
| Distribution | N Venezuela (coastal cordillera, Zulia, Carabobo, Guárico, Miranda, Yaracuy); elevation: <100-1270 m (see comment). Type locality: “Caracas” [Venezuela] |
| Reproduction | oviparous |
| Types | Syntypes: ZMB (lost); Neotype: USNM 129579 (designated by LIEB 1988; invalid fide CADLE 2012) |
| Diagnosis | Diagnosis: Dendrophidion nuchale is characterized by (1) dorsocaudal reduction from 8 to 6 occurring posterior to subcaudal 25 (range, 27–54); (2) anal plate single or divided (approximately equal frequencies); (3) subcaudal counts > 135 in males and females; (4) ground color of head and body brown; dark crossbands with embedded pale ocelli present on the posterior half or more of the body and tail (Fig. 1); tail not strongly differentiated in color from posterior body; (5) blackish or dark brown nuchal collar present in adults (evident or not in juveniles); (6) ventral scutes in adults usually with irregular dark anterior borders to each scale (often interrupted midventrally) and sometimes with other irregular dark flecks or spots (Fig. 1); (8) total number of enlarged spines on the hemipenis relatively few (< 60); spines in the distal row uniform in size and numbering < 15 (12–14). |
| Comment | Synonymy partly after PETERS & OREJAS-MIRANDA 1970, VILLA et al. 1988, LIEB 1988, CADLE & SAVAGE 2012. In much of the literature on Venezuelan snakes prior to 1988, Dendrophidion nuchale was referred to by the name “D. percarinatum”. Distribution: restricted to N Venezuela fide CADLE & SAVAGE 2012 who split up the species into D. nuchale, D. clarkii, and D. rufiterminorum. Previously the species was considered to be widespread in Central and South America, including Belize, Costa Rica, Nicaragua, Honduras, Panama, Colombia, Ecuador, Venezuela (coastal cordillera, Zulia, Carabobo, Guárico, Miranda, Yaracuy). Most of that range is now assigned to D. clarkii. Symbols for D. nuchale and D. dendrophis are reversed in figure 1 of Natera- Mumaw 2008. Abundance in Honduras: rare |
| Etymology | Nuchale is derived from the Medieval Latin noun nucha, meaning the back of the neck or nape (originally from an Arabic word meaning spinal cord, with transfer of meaning) + the adjectival ending –alis (pertaining to). It presumably is an allusion to the black nape collar of Dendrophidion nuchale. The form “nuchalis” (the masculine and feminine form of the adjective) is often seen in combination with Dendrophidion, but the neuter form nuchale is required in this case to agree with the Greek neuter diminutive ending –ion of the genus name. |
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