Rhinocheilus etheridgei GRISMER, 1990
Can you confirm these amateur observations of Rhinocheilus etheridgei?
|Higher Taxa||Colubridae, Colubrinae, Lampropeltini, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Etheridge’s Longnose Snake|
G: Etheridges Nasennatter
S: Culebra Nariz Larga de la Isla Cerralvo
|Synonym||Rhinocheilus lecontei etheridgei GRISMER 1990|
Rhinocheilus etheridgei — GRISMER 1999
Rhinocheilus lecontei etheridgei — LINER 2007
Rhinocheilus etheridgei — HEIMES 2016: 139
Rhinocheilus etheridgei — JOHNSON et al. 2017
|Distribution||Mexico (Baja California: Isla Cerralvo)|
Type locality: “Arroyo Viejos, at 10 m elevation on the southwestern end of Isla Cerralvo, Baja California Sur, Mexico”.
|Types||Holotype: SDNHM = SDSNH 66294; paratypes SDNHM = SDSNH 66309|
|Diagnosis||Diagnosis: R. (l.) etheridgei has a red temporal region while that of lecontei is not red. R. etheridgei also has red tongue with gray tips while the tongue of lecontei is black (Heimes 2016: 139).|
|Comment||Subspecies: GRISMER (1999) elevated Rhinocheilus lecontei etheridgei to full species status based on squamation, but using an evolutionary species concept.MANIER (2004) found that no one subspecies was consistently divergent in all analyses, leading to the conclusion that the three mainland subspecies are not sufficiently distinct to warrant separate subspecies status. The island subspecies, though not always statistically distinct, is geographically separate from other populations and differs in characters related to size. Given the small number of specimens available, a decision regarding its taxonomic status (i.e. elevation to species level) is best deferred until additional specimens can be examined and data on molecular variation can be analysed.|
|Etymology||Named after Richard Emmett Etheridge (16 Sep 1929 - 14 Jan 2019), American herpetologist. See Espinoza & Queiroz for biographical details.|
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