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Tropidodipsas guerreroensis TAYLOR, 1939

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Guerrero Snail Sucker 
SynonymTropidodipsas guerreroensis TAYLOR 1939: 470
Tropidodipsas guerreroensis — SMITH 1943: 372
Tropidodipsas fasciata guerreroensis — ALVAREZ DEL TORO & SMITH 1956:16
Sibon fasciatus guerreroensis — KOFRON 1985
Sibon fasciatus guerreroensis — KOFRON 1987
Tropidodipsas guerreroensis — GRÜNWALD et al. 2021 
DistributionMexico (Pacific slopes, Oaxaca; Guerrero)

Type locality: Buena Vista, Guerrero; probable locality, Uruapan, Michoacan, fide ÁLVAREZ DEL TORO & SMITH 1956: 16  
TypesHolotype: FMNH 100070; other specimens: INI-RENA 2781 
DiagnosisDiagnosis: Taylor 1939: 470

Description: Smith 1943: 373

Comparisons: “The differences between T. guerreroensis and T. fasciata pertain primarily to pattern; in fact, the other apparent differences are probably not significant. The pattern is typically broken in guerreroensis, so that the light rings are not countable. It is noteworthy that in the specimen from Mixtequilla the rings are at least discernible, even though not readily countable, whereas in the Guerrero examples the rings are not even discernible. An approach to the features of T. fasciata is thus suggested. Since primarily pattern is involved in distinguishing guerreroensis from fasciata, and since there is some trend of one toward the other, it seems reasonable to regard these two also as subspecific.” (ALVAREZ DEL TORO & SMITH 1956) 
CommentSimilar species: T. philippii.

Distribution: See Grünwald et al. 2021: 252 (Fig. 10) for a map. 
EtymologyNamed after the type locality. 
  • Álvarez DEL TORO, M., & SMITH, H. M. 1956. Notulae herpetologicae Chiapasiae. I. Herpetologica 12: 3-17 - get paper here
  • Grünwald CI, Toribio-Jiménez S, Montaño-Ruvalcaba C, Franz-Chávez H, Peñaloza-Montaño MA, Barrera-Nava EY, Jones JM, Rodriguez CM, Hughes IM, Strickland JL, Reyes-Velasco J 2021. Two new species of snail-eating snakes of the genus Tropidodipsas (Serpentes, Dipsadidae) from southern Mexico, with notes on related species. Herpetozoa 34: 233-257 - get paper here
  • Kofron, C. P. 1987. Systematics of Neotropical gastropod-eating snakes: the fasciata group of the genus Sibon. Journal of Herpetology 21 (3): 210-225. - get paper here
  • Kofron, C.P. 1985. Systematics of the neotropical gastropod-eating snake genera Tropidodipsas and Sibon. Journal of Herpetology 19 (1): 84-92. - get paper here
  • Smith, H.M. 1943. A new snake of the genus Tropidodipsas from Mexico. J. Washington Acad. Sci. 33: 371-373
  • Taylor, Edward H. 1939. Some Mexican serpents. Univ. Kansas Sci. Bull. 26 (13): 445-487 - get paper here
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