Chironius nigelnoriegai JADIN, JOWERS, BLAIR, LUDWIG, SALGADO-IRAZABAL & MURPHY, 2024
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Chironius nigelnoriegai
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| Higher Taxa | Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Trinidad Sipo, Trinidadian Sipo |
| Synonym | Chironius nigelnoriegai JADIN, JOWERS, BLAIR, LUDWIG, SALGADO-IRAZABAL & MURPHY 2024: 8 Coluber carinatus LINNAEUS 1758: 223 Coluber (Chironius) DONNDORFF 1798: 209 Natrix carinatus – MERREM 1820: 120 Chironius carinatus – FITZINGER 1826: 31, 60 Chironius carinatus – RUTHVEN 1922: 65 Chironius carinatus – AMARAL 1925: 4 Chironius carinatus – BEEBE 1946: 21 Chironius carinatus – DUELLMAN 1978: 231 Chironius carinatus – ROZE 1966: 93 Chironius carinatus – GORZULA & SEÑARIS 1999: 162 Chironius carinatus – SAVAGE 2002: 648 Chironius carinatus – WALLACH et al. 2014: 159 Chironius carinatus – NOGUEIRA et al. 2019. Herpetodryas carinatus – WAGLER 1830: 180 Herpetodryas carinatus – BOULENGER 1886: 433 Herpetodryas carinatus – BOULENGER 1894: 73 Herpetodryas carinatus – BARBOUR & Cole 1906: 152 Herpetodryas carinatus – BARBOUR 1915: 77. Herpetodryas fuscus REINHARDT & LÜTKEN 1862: 10 Herpetodryas carinatus – MOLE & URICH 1894a: 85 Herpetodryas carinatus – MOLE & URICH 1894b: 518 Herpetodryas carinatus – MOLE 1924: 246 Herpetodryas carinatus var. carinatissima JAN & SORDELLI 1869: 31, plate 2 (nomen oblitum) Herpetodryas carinatus var. decalepis JAN & SORDELLI 1869: 31, plate 2 (nomen dubium) Herpetodryas carinatus var. glabra JAN & SORDELLI 1869: 31, plate 2 (nomen dubium) Herpetodryas carinatus var. macrophthalma JAN & SORDELLI 1869: 31, plate 2 (nomen dubium) (Fig. 6) Erpetodryas sexcarinatus — FOWLER 1913: 171 Chironius carinatus — WEHEKIND L. 1960:73 Chironius carinatus — EMSLEY, 1977: 239 Chironius carinatus — MURPHY 1997: 168 Chironius carinatus — MURPHY et al. 2018 Chironius carinatus carinatus – DIXON et al. 1993: 73 Chironius carinatus carinatus – BOOS 2001: 119 |
| Distribution | Trinidad Type locality: Nariva Road, Manzanilla Beach (georeferenced, 10 29’25.6”N, 6103’16.8”W), Trinidad (Fig. 7). |
| Reproduction | |
| Types | Holotype. CAS 231765, adult female (field number PGF 364), collected on 18 July 2004 by R. Lawson, P.G. Frank, and P.J. Frank. The same information is also provided for the designated paratype CAS 231764 (PGF 363). |
| Diagnosis | Diagnosis (n=2): A dark olive green to black Chironius with heavily keeled paravertebral scales that form a double ridge (less noticeable in females) (Fig. 8). The edges of the scales between the ridges alternate yellow or cream spots that appear as a stripe from a distance. The vertebral stripe fades anterior to the cloaca; the upper eight labials are primarily yellow. The first row of dorsal scales are bright yellow to yellow-green; this colouration extends onto rows two and three in some specimens; the first row of scales on the tail have a bright yellow spot on each scale; the posterior edge of each ventral is trimmed with dark pigment; ventrals 156–167 (Dixon et al. 1993 reported 146–167 in C. c. carinatus), subcaudals 127–135 (Dixon et al. 1993 reported 108–145 which is strikingly fewer than C. cochranae, Table 2); upper labials 4 þ 5 or 5 þ 6 border the orbit; usually two postoculars; six lower labials contact each chin shield (Fig. 9). The dorsal scale row arrangement is 12-12-8 in males and 12-12-10 in females. Anterior dorsal scale rows 2–5 have a single apical pit. The dorsal scales in this species are ovate and about as tall as they are long (in C. cochranae they are longer than they are tall). (Jadin et al. 2024) Additional details (1284 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Chresonymy: from Jadin et al. 2024. See this paper also for references. |
| Etymology | Named after Dr. Nigel Noriega, an integrative biologist who now operates Sustainable Innovation Initiatives, an organization focused on enabling eco- logically regenerative economies in Trinidad and the southern Caribbean. |
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