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Geophis nigrocinctus DUELLMAN, 1959

IUCN Red List - Geophis nigrocinctus - Data Deficient, DD

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Black-banded Earth Snake
S: Minadora de Bandas Negras 
SynonymGeophis nigrocinctus DUELLMAN 1959
Geophis nigrocinctus — LINER 1994
Geophis nigrocinctus — WILSON & TOWNSEND 2007: 15
Geophis nigrocinctus — WALLACH et al. 2014: 304 
DistributionMexico (Michoacán: Sierra de Coalcoman, Jalisco: Sierra de Manantlán), above 1900 m elevation

Type locality: Dos Aguas, Michoacán, México, 2100 m elevation.  
Reproductionoviparous 
TypesHolotype: UMMZ 118841 
DiagnosisDIAGNOSIS. A species of Geophis with dorsal scales smooth and in 15 rows; differs from other species in this group in having the following combination oi characters: no anterior temporal, 161 to 170 ventrals, 41 to 50 caudals, dorsal pattern with many narrow black cross bands on a dull brick-red ground color, and venter cream with black spots.

Coloration: Dorsal ground color dull reddish brown anteriorly, changing to a dull grayish brown posteriorly; 47 black cross bands extend laterally onto first scale row or edges of ventrals; first black band begins immediately behind parietals and extends posteriorly for five scales; it is followed by a cream interspace one scale long; second band, four scales in length; third and fourth, three scales long; each followed by an interspace one scale long; the succeeding bands are two scales in length, except posteriorly where they are reduced to one scale; bands do not become narrower laterally; interspaces of ground color are two or three scales long at midbody and posteriorly; anteriorly, black bands bordered by a narrow cream line; dorsal surface of tail dark grayish brown with many indistinct dark bands; top of head black, irregularly and faintly mottled with light brown; lower edges of upper labials cream; postlabials and temporals mottled with brownish cream; lower labials and chin crearn, irregularly spotted with black; belly cream with squarish black spots irregularly arranged in two longitudinal rows; lateial edges ol most ventrals black; under surlace ol tail colored like belly.
In lile the ground color was dull brick red, the bancls black, the anterior ones outlined by narrow cream lines. The belly was crearn, spotted with black. 
Comment 
References
  • Downs, F. L. 1967. lntrageneric relations among colubrid snakes of the genus Geophis Wagler. Misc. Publ. Mus. Zool. Univ. Michigan 131: 1-193. - get paper here
  • Duellman, William E. 1959. Two new snakes, genus Geophis, from Michoacán, Mexico. Occasional Papers of the Museum of Zoology, University of Michigan (605): 1-9 - get paper here
  • Flores-Villela,O. et al. 1995. Geophis nigrocinctus. Herpetological Review 26 (2): 109 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • WILSON, L.D. & J.H. TOWNSEND 2007. A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation. Zootaxa 1395: 1-31 - get paper here
 
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