Geophis laticollaris SMITH, LYNCH & ALTIG, 1965
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Geophis laticollaris
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Widecollar Earth Snake S: Minadora de Collar Ancho E: Red Earth Snake [russatus] S: Minadora de Roja [russatus] |
| Synonym | Geophis laticollaris SMITH, LYNCH & ALTIG 1965 Geophis sallaei russatus SMITH & WILLIAMS 1966 Geophis russatus — DOWNS 1967: 138 Geophis sallaei — DOWNS 1967: 168 Geophis laticollaris — LINER 1994 Geophis russatus — LINER 1994 Geophis russatus — WILSON & TOWNSEND 2007: 17 Geophis laticollaris — WILSON & TOWNSEND 2007: 13 Geophis laticollaris — WALLACH et al. 2014: 303 Geophis russatus — WALLACH et al. 2014: 305 Geophis laticollaris — PALACIOS-AGUILAR et al. 2022 |
| Distribution | Mexico (Oaxaca) Type locality: Three miles south of Putla, Oaxaca, Mexico. russatus: Mexico (Oaxaca: Sierra de Miahuatlán); Type locality: La Concepción, near Putla, Oaxaca, México. |
| Reproduction | oviparous |
| Types | Holotype: INHS (= UIMNH) 57170, adult female collected 29 June 1964 by R. Altig. Holotype: INHS (= UIMNH) 61409, adult male collected 25 May 1965 by T. MacDougall [russatus] |
| Diagnosis | Definition and Diagnosis. No anterior temporal; scales in 15 rows, weakly keeled posteriorly; internasals present; ventrals 132, caudals 30; black above, white below, except for a broad white collar on neck and rear of head. Most similar to G. sallaei, but different in having a nuchal collar and a smaller eye (Smith et al. 1965). Coloration: Dorsal surface dark, nearly black medially, browner on sides, pigment extending on to ends of ventrals; scales in first row with light, unpigmented areas only on neck, to a distance no more than 20 mm. posterior to head; top and sides of head uniformly dark, to lip; lower labials, mental and anterior chinshields with irregularly distributed pigmented areas; venter white, unpigmented; subcaudal surface extensively pigmented, uniformly dark on posterior fourth; an unpigmented area on posterior central edge of each divided subcaudal, large on anterior scales, disappearing on posterior scales (Smith et al. 1965). |
| Comment | Synonymy: Geophis russatus was considered as synonym of G. laticollaris by Pavón-Vázquez et al. (2011) and Heimes 2016: 244. This was confirmed by Palacios-Aguilar et al. 2022. Geophis laticollaris was synonymized with G. sallaei by Downs (1967), but later resurrected by Smith & Chiszar (1992) after examining materials acquired subsequent to publication of Downs’ work. |
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