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Geophis dunni SCHMIDT, 1932

IUCN Red List - Geophis dunni - Data Deficient, DD

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesDunn's Earth Snake 
SynonymGeophis dunni SCHMIDT 1932
Geophis dunni — DOWNS 1967: 153
Geophis dunni — PETERS & OREJAS-MIRANDA 1970: 119
Geophis dunni — JANSEN & KÖHLER 2003
Geophis dunni — WILSON & TOWNSEND 2007: 10
Geophis dunni — WALLACH et al. 2014: 302 
DistributionNicaragua, 705 m elevation

Type locality: Matagalpa, Nicaragua. 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.
 
Reproductionoviparous 
TypesHolotype: MCZ) 31870, adult female, Museum of Comparative Zoology, removed from the stomach of a coral snake, Micrurus nigrocinctus (MCZ 17087), collected by W.B. Richardson. 
CommentDiagnosis: Geophis dunni can be distinguished from the two other members of the sieboldi group that occur in eNCA (G. damiani and G. hoffmanni) by having 17 dorsal scale rows throughout the length of its body (15 dorsal scale rows in G. damiani and G. hoffmanni). From the three remaining species with 17 dorsal scale rows (G. fulvoguttatus, G. nephodrymus, and G. rhodogaster), G. dunni can be distinguished by having distinctly keeled dorsal scales on most of the body (smooth dorsal scales in G. fulvoguttatus, G. nephodrymus, and G. rhodogaster), eight infralabials (six in G. nephodrymus, six or seven in G. fulvoguttatus and G. rhodogaster), dorsal coloration pale yellow with dark brown saddles (dorsal coloration dark brown or blackish gray with red or yellow middorsal blotches in G. fulvoguttatus; gray to blackish gray with no pattern or with red or pale gray dorsolateral blotches, bands, or partial bands in G. nephodrymus; dark reddish brown or brown in G. rhodogaster). 
EtymologyNamed after Emmett Reid Dunn (1894-1956) [obituary in Schmidt 1957: 75]. 
References
  • Downs, F. L. 1967. lntrageneric relations among colubrid snakes of the genus Geophis Wagler. Misc. Publ. Mus. Zool. Univ. Michigan 131: 1-193. - get paper here
  • Jansen, M. & G. Koehler 2002. Biogeographische Analyse der Herpetofauna von ausgewählten Hochlandgebieten Nicaraguas Salamandra 38 (4): 269-286 - get paper here
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • Restrepo T J H; Wright J W 1987. A new species of the colubrid snake genus Geophis from Colombia. Journal of Herpetology 21 (3): 191-196 - get paper here
  • Savage, Jay M.; Watling, James I. 2008. Not so rare snakes: a revision of the Geophis sieboldi group (Colubridae: Dipsadinae) in lower Central America and Colombia. Zoological Journal of the Linnean Society 153(3):561-599
  • Schmidt, K. P. 1932. Stomach Contents of Some American Coral Snakes, with the Description of a New Species of Geophis. Copeia 1932: 8 - get paper here
  • Schmidt, K.P. 1957. Emmett Reid Dunn, 1894-1956. Copeia 1957 (2): 75-77 - get paper here
  • Sunyer, Javier 2014. An updated checklist of the amphibians and reptiles of Nicaragua. Mesoamerican Herpetology 1 (2): 186–202. - get paper here
  • Townsend, J. H. 2006. INVENTORY AND CONSERVATION ASSESSMENT OF THE HERPETOFAUNA OF THE SIERRA DE OMOA, HONDURAS, WITH A REVIEW OF THE Geophis (SQUAMATA: COLUBRIDAE) OF EASTERN NUCLEAR CENTRAL AMERICA. PhD thesis, University of Florida, 138 pp.
  • Townsend, J. H. 2006. Geophis dunni. Catalogue of American Amphibians and Reptiles 838: 1-3. - get paper here
  • Townsend, Josiah H. 2009. MORPHOLOGICAL VARIATION IN GEOPHIS NEPHODRYMUS (SQUAMATA: COLUBRIDAE), WITH COMMENTS ON CONSERVATION OF GEOPHIS IN EASTERN NUCLEAR CENTRAL AMERICA. Herpetologica 65 (3): 292-302 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
  • WILSON, L.D. & J.H. TOWNSEND 2007. A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation. Zootaxa 1395: 1-31 - get paper here
 
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