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Trimorphodon paucimaculatus TAYLOR, 1936

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Sinaloan lyresnake 
SynonymTrimorphodon paucimaculatus TAYLOR 1938: 527
Trimorphodon lambda paucimaculata — FUGLER & DIXON 1961: 17
Trimorphodon lambda paucimaculata — HARDY 1969: 206
Trimorphodon paucimaculatus — DEVITT et al. 2008
Trimorphodon paucimaculatus — WALLACH et al. 2014: 744 
DistributionMexico (Sinaloa, Zacatecas, Jalisco, Nayarit)

Type locality: Mazatlan, Sin., Mexico.  
Reproductionoviparous 
TypesHolotype: INHS (= UIMNH) 25072 (was EHT. No. 709, collected July 24, 1934; E. H. Taylor, collector) 
DiagnosisDiagnosis: A species related to T. bi-sciitatus Dumeril and Bibron, but not having the preoculars touching frontal, and with the dorsal spots greatly elongated and fewer in number. Frontal as long as parietal; prefrontals as wide as long. Ventrals, 253; anal divided; subcaudals, 76 (from TAYLOR 1936). 
CommentSynonymy: Has been considered as a synonym of T. biscutatus biscutatus, e.g. by Scott 1984.

Habitat: partly arboreal (Harrington et al. 2018). 
EtymologyNot given by Taylor but apparently named after the smaller number of dorsal spots, from Latin “pauci” = few, and macula = spot. 
References
  • Bañuelos-Alamillo, Jorge A., Rubén A. Carbajal-Márquez, Gustavo E. Quintero-Díaz and Gabriela Moreno-Ochoa. 2015. Geographic Distribution: Trimorphodon paucimaculatus (Sinaloan lyresnake). Herpetological Review 46 (3): 387 - get paper here
  • Carbajal-Márquez, Rubén A., Gustavo E. Quintero-Diaz and Zaira Y. González-Saucedo. 2014. Trimorphodon paucimaculatus (Sinaloan lyresnake) diet. Herpetological Review 45 (3): 521 - get paper here
  • Cruz-Sáenz, D., F. J. Muñoz-Nolasco, V. Mata-Silva, J. D. Johnson, E. García-Padilla, and L. D. Wilson. 2017. The herpetofauna of Jalisco, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 4(1): 23–118 - get paper here
  • Devitt, Thomas J.; Travis J. LaDuc, and Jimmy A. McGuire 2008. The Trimorphodon biscutatus (Squamata: Colubridae) Species Complex Revisited: A Multivariate Statistical Analysis of Geographic Variation. Copeia 2008 (2): 370–387 - get paper here
  • Fugler, Charles M.;Dixon, James R. 1961. Notes on the herpetofauna of the El Dorado Area of Sinaloa, Mexico. Publications of the Museum, Michigan State University, Biological Series 2 (1): 1-24
  • Hardy, L.M., & McDiarmid, R.W. 1969. The amphibians and reptiles of Sinaloa, Mexico. Univ. Kansas Publ. Mus. Nat. Hist. 18 (3): 39-252. - get paper here
  • Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Lemos-Espinal JA, Smith GR 2020. A checklist of the amphibians and reptiles of Sinaloa, Mexico with a conservation status summary and comparisons with neighboring states. ZooKeys 931: 85-114 - get paper here
  • Loc-barragán J.A., D., Lazcano y G.A Woolrich-Piña. 2018. Notes on the Herpetofauna of Nayarit, Mexico 2: Amphibians and Reptiles of the Municipality of Compostela. Bulletin of the Chicago Herpetological Society 53(10): 205-212
  • Loc-Barragán JA, Smith GR, Woolrich-Piña GA, Lemos-Espinal JA 2024. An updated checklist of the amphibians and reptiles of Nayarit, Mexico with conservation status and comparison with adjoining States. Herpetozoa 37: 25-42 - get paper here
  • Loc-Barragán, Jesús Alberto and David Lazcano 2018. Notes on the Herpetofauna of Nayarit, Mexico 1: Amphibians and Reptiles of the Municipality of Tecuala. Bulletin of the Chicago Herpetological Society 53(4):73-80
  • Loc-Barragán, Jesús, Juan Pablo Ramírez-Silva and Rubén Alonso Carbajal-Márquez. 2016. Nature Notes. Trimorphodon paucimaculatus. Diet and Reproduction. Mesoamerican Herpetology 3 (1): 160–161 - get paper here
  • Loc-Barragán, Jesús A.; Zarah I. Sosa-Hernández, Christoph I. Grünwald, Emmanuel Miramontes-Medina, Jorge A. Bañuelos-Alamillo, Guillermo A. Woolrich-Piña and David Lazcano 2019. Notes on the Herpetofauna of Nayarit, Mexico 3: Amphibians and Reptiles of the Municipality of Huajicori. Bulletin of the Chicago Herpetological Society 54(10): 205-213 - get paper here
  • Taylor, Edward H. 1936. Notes on the Herpetological fauna of the Mexican state of Sinaloa. Univ. Kansas Sci. Bull. 24 (20): 505-537 - get paper here
  • 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.
  • Woolrich-Piña, Guillermo A, Paulino Ponce-Campos, Jesús Loc-Barragán, Juan Pablo Ramírez-Silva, Vicente Mata-Silva, Jerry D. Johnson, Elí García-Padilla and Larry David Wilson. 2016. The herpetofauna of Nayarit, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 3 (2): 376-448 - get paper here
 
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