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Lachesis melanocephala SOLÓRZANO & CERDAS, 1986

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Higher TaxaViperidae, Crotalinae, Serpentes (snakes) 
Subspecies 
Common NamesE: Black-headed bushmaster
G: Schwarzkopf-Buschmeister 
SynonymLachesis muta melanocephala SOLÓRZANO & CERDAS 1986
Crotalus mutus LINNAEUS 1766 (part.)
Lachesis mutus — DAUDIN 1803 (part.)
Lachesis muta melanocephala — WELCH 1994: 69
Lachesis melanocephala — ZAMUDIO & GREENE 1997
Lachesis melanocephala — MCDIARMID, CAMPBELL & TOURÉ 1999: 312
Lachesis melanocephala — SAVAGE 2002 
DistributionSE Costa Rica (Pacific coast, especially Osa peninsula)

Type locality: "tropical rainforest 9 km northern [sic] of Ciudad Neily in southeastern Provincia de Puntarenas, Costa Rica." Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
TypesHolotype: MICP 301. 
CommentVenomous!

Max. total length: 2.3 m

Reproduction: oviparous

Diagnosis.—Distinguished from other species of Lachesis by having the dorsum of the head completely black. 
References
  • Fernandes, D.S.; Franco, F.L. & Fernandes, R. 2004. Systematic revision of the genus Lachesis DAUDIN 1803 (Serpentes: Viperidae). Herpetologica 60 (2): 245-260 - get paper here
  • Laita, Mark 2013. Serpentine. Abrams and PQ Blackwell, Auckland, New Zealand, 200 unnumbered pages
  • McDiarmid,R.W.; Campbell,J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. Herpetologists’ League, 511 pp.
  • Porras, L.W. & Solórzano, A. 2006. Costa Rica’s venomous snakes. Reptilia (GB) (48): 11-17 - get paper here
  • Porras, L.W. & Solórzano, A. 2006. Die Schlangen Costa Ricas. Reptilia (Münster) 11 (61): 20-27 - get paper here
  • Savage, J.M. 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna Between Two Continents, Between Two Seas. University of Chicago Press, 934 pp. [review in Copeia 2003 (1): 205]
  • Solórzano,A. & CERDAS,L. 1986. A new subspecies of the bushmaster, Lachesis muta, from Southeastern Costa Rica. Journal of Herpetology 20 (3): 463-466 - get paper here
  • Zamudio, KELLY R. & HARRY W. GREENE 1997. Phylogeography of the bushmaster (Lachesis muta: Viperidae): implications for neotropical biogeography, systematics, and conservation. Biol. J. Linnean Soc. 62 (3): 421-442 - get paper here
 
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