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Micrurus serranus HARVEY, APARICIO & GONZALEZ, 2003

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Higher TaxaElapidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common Names 
SynonymMicrurus serranus HARVEY, APARICIO & GONZALEZ 2003: 34
Micrurus frontifasciatus (WERNER) — CAMPBELL & LAMAR 1989: 116 (in part)
Micrurus serranus — WALLACH et al. 2014: 453 
DistributionBolivia (Florida)

Type locality: 3 km N of Samaipata on the road to Mairana, Florida Province, Santa Cruz, Bolivia,  
TypesHolotype: UTA 34561, male (collector's tag M. B. Harvey 1960) 
DiagnosisDiagnosis: Micrurus serranus is a small (maximum size to 822 mm total length) coralsnake with the following characteristics: (1) Dorsal pattern of white, red, and black triads; (2) hemipenis and tail relatively short; (3) two supralabials entering orbit; (4) mental usually (95%) separated from chinshields by medial contact of first pair of infralabials; (5) anal scale usually (90%) divided; (6) first triad complete; (7) 1-6 red vertebrals separating first triad from parietals; (8) dorsal surface of head black with white (pale yellow in life) band crossing snout; margins of scales within white ring edged in black; parietals partly red; (9) extent of black pigment in red and white rings variable, but white rings with more black pigment than red rings; (10) white rings longest dorsally, constricted or broken ventrally by black rings; (11) parietals red with black pigment concentrated an teriorly; (12) 10-14 triads on the body, 0.67-1.67 on the tail; (13) black rings almost always longer than white rings; (14) black pigment present on mental, anterior infralabials, and chinshields; white or pale yellow pigment may also be present in the same region [HARVEY et al. 2003]. 
EtymologyThe specific epithet serranus is an adjective derived from the Spanish adjective serrano, meaning highland and refers to the species' restricted range at high elevations in intermontane valleys of Santa Cruz and Cochabamba, Bolivia. 
  • Harvey M. B., J. Aparicio E, and L. Gonzalez A. 2003. Revision of the venomous snakes of Bolivia: Part 1. The coralsnakes (Elapidae: Micrurus). Annals of the Carnegie Museum 72: 1-52 - 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.
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