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Leptophis coeruleodorsus OLIVER, 1942

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Green-and-yellow Parrot Snake, Oliver’s parrot snake 
SynonymLeptophis coeruleodorsus OLIVER 1942: 4
Ahaetulla liocercus — REINHARDT & LÜTKEN 1862: 10
Dendrophis liocercus — COURT 1884: 382
Leptophis liocercus — MOLE & URICH 1894a: 85
Leptophis ahaetulla ortoni — BEEBE 1946: 34
Leptophis coeruleodorsus — BEEBE 1946: 34
Thalerophis richardi coeruleodorsus — OLIVER 1948: 228
Leptophis ahaetulla coeruleodorsus — ICZN 1958: 270
Leptophis ahaetulla coeruleodorsus — PETERS & OREJAS-MIRANDA 1970
Leptophis ahaetulla coeruleodorsus — MERTENS 1972
Leptophis ahaetulla coeruleodorsus — MERTENS 1973
Leptophis ahaetulla — EMSLEY 1977: 241
Leptophis ahaetulla coeruleodorsus — KORNACKER 1997
Leptophis ahaetulla coeruleodorsus — GORZULA & SEÑARIS 1999
Leptophis ahaetulla coeruleodorsus — BOOS 2001
Leptophis coeruleodorsus — MURPHY et al. 2013 
DistributionVenezuela, Tobago, Trinidad, Isla de Margarita ?

Type locality: Trinidad, British West Indies. Here we restrict the type locality to Mt. St. Benedict, Tunapuna, Trinidad (~10°39’N 61°23’W). There are three well documented specimens collected from this location.  
TypesHolotype: AMNH 9022 (also given as AMNH 209022). 
DiagnosisDiagnosis. The absence of a loreal distinguishes L. coeruleodorsusus from L. depressirostris, L. diplotropis, and L. mexicanus. A broad, green mid-dorsal stripe with copper to bronze dorsolateral stripes that fade posteriorly and a head that lacks scales outlined in black will separate if from L. ahaetulla (and all its subspecies), L. cupreus, L. modestus L. nebulosus, L. riveti, L. stimsoni. The color pattern of L. haileyi sp nov. in life is unknown; but it has nine upper labials with the last upper labial the longest and in contact with the primary temporal scale [Murphy et al. 2013]. 
CommentNot listed by WALLACH et al. 2014:372 but mentioned under L. ahaetulla as valid fide Navarrete et al. 2009: 61.

Distribution: Literature reports of L. coeruleodorsus on the Isla de Margarita need verification. Pérez-Santos (1988) reported this species from western Colombia, probably based upon mis-identified L. a. occidentalis.

Habitat: partly arboreal (Harrington et al. 2018). 
  • Auguste, Renoir J. 2019. Herpetofaunal checklist for six pilot protected areas in Trinidad and Tobago. Herpetology Notes 12: 577-585 - get paper here
  • Beebe, William 1946. Field notes on the snakes of Kartabo, British Guiana, and Caripito, Venezuela. Zoologica 31: 11-52 - get paper here
  • Boos, H.E.A. 2001. The snakes of Trinidad and Tobago. Texas A&M University Press, 270 pp.
  • Gorzula, Stefan & Senaris, J. Celsa 1999. In: Contribution to the herpetofauna of the Venezuelan Guayana. I: a data base. Scientia Guaianae, Caracas, No. 8 [1998], 269+ pp.; ISBN 980-6020-48-0
  • 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
  • Hedges SB, Powell R, Henderson RW, Hanson S, and Murphy JC 2019. Definition of the Caribbean Islands biogeographic region, with checklist and recommendations for standardized common names of amphibians and reptiles. Caribbean Herpetology 67: 1–53
  • Kornacker, Paul M.;Dederichs, Ursula 1997. Herpetologische Eindrücke einer Venezuelareise. Elaphe 5 (3): 87-96
  • Mertens, R. 1972. Herpetofauna tobagana. Stuttgarter Beitr. zur Naturkunde nr. 252 22 pp. - get paper here
  • Mertens, R. 1973. Bemerkenswerte Schlanknattern der neotropischen Gattung Leptophis. Stud. Neotrop. Fauna 8: 141-154. - get paper here
  • MURPHY, JOHN C.; STEVLAND P. CHARLES, RICHARD M. LEHTINEN & KRISTA L. KOELLER 2013. A molecular and morphological characterization of Oliver’s parrot snake, Leptophis coeruleodorsus (Squamata: Serpentes: Colubridae) with the description of a new species from Tobago. Zootaxa 3718 (6): 561–574 - get paper here
  • Natera-Mumaw, Marco; Luis Felipe Esqueda-González & Manuel Castelaín-Fernández 2015. Atlas Serpientes de Venezuela. Santiago de Chile, Dimacofi Negocios Avanzados S.A., 456 pp. - get paper here
  • Navarrete, L.F.; López-Johnston, J.C. & Dávila Blanco, A. 2009. Guia de las Serpientes de Venezuela [2da Edición]. Zoocriadero Ecopets, Bioreptilia, y Grupo Río Verde, Caracas, 102 pp.
  • Oliver, J. A. 1942. A check list of the snakes of the genus Leptophis, with descriptions of new forms. Occ. Pap. Mus. Zool., Univ. Michigan (No. 462): 19 pp. - get paper here
  • Oliver, J. A. 1948. The relationships and zoogeography of the genus Thalerophis Oliver. Bull. Amer. Mus. Nat. Hist. 92: 157-280. - get paper here
  • Señaris, J. Celsa; María Matilde Aristeguieta Padrón, Haidy Rojas Gil y Fernando J. M. Rojas-Runjaic 2018. Guía ilustrada de los anfibios y reptiles del valle de Caracas, Venezuela. Ediciones IVIC, Instituto Venezolano de Investigaciones Científicas (IVIC). Caracas, Venezuela. 348 pp.
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