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Eutrachelophis steinbachi (BOULENGER, 1905)

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common Names 
SynonymRhadinaea Steinbachi BOULENGER 1905: 454
Aporophis melanocephalus GRIFFIN 1915: 171
Liophis steinbachi - AMARAL 1929: 174
Liophis steinbachi — VANZOLINI in PETERS & OREJAS-MIRANDA 1986: 16
Erythrolamprus steinbachi — GRAZZIOTIN et al. 2012
Rhadinaea steinbachi — WALLACH et al. 2014: 834
Eutrachelophis steinbachi — MYERS & MCDOWELL 2014 
DistributionSE Bolivia

Type locality: Provincia Sara, Dep. Santa Cruz de la Sierra, Bolivia 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 
TypesSyntypes: BMNH 1946.1.21.62-63; Lectotype: BMNH 1946.1.21.62 (designated by MYERS & MCDOWELL 2014). 
CommentSynonymy that of PETERS & OREJAS-MIRANDA 1970. Incertae sedis fide DIXON 1980.

DIAGNOSIS: Eutrachelophis steinbachi is like E. bassleri in having 15 dorsal scale rows and a usually conspicuous pair of ocellar markings6 on the nape. It is a larger snake (to 558 mm total length) than bassleri (, 400 mm) and is readily differentiated by details of color pattern. E. steinbachi has a pair of oblique pale markings touching the upper anterior and upper posterior edges of the eye (both lacking in bassleri), and the dark head color extends onto the neck as unbroken dorsal and lateral stripes. E. steinbachi lacks the broken, ocellarlike nuchal collar (present in bassleri). A lateral line of pale dashes, where present, lies on scale row 6 in steinbachi, on row 4 in bassleri. E. steinbachi differs absolutely in having a divided hemipenis with spinose tips [MYERS & MCDOWELL 2014: 16] 
Etymologynamed after Dr. Jose Steinbach (1856-1929), a botanical and zoological collector in Argentina and Bolivia for the Field Museum. 
References
  • Amaral,A. do 1930. Estudos sobre ophidios neotropicos XVIII. Lista remissiva dos ophidios da região neotropica. Mem. Inst. Butantan 4: 126-271 [1929] - get paper here
  • Boulenger, George A. 1905. Descriptions of new snakes in the collection of the British Museum. Ann. Mag. nat. Hist. (7) 15 (89): 453-456 - get paper here
  • Dixon, J. R. 1980. The neotropical colubrid snake genus Liophis. The generic concept. Milwaukee Public Museum Contributions in Biology and Geology 31: 1-40
  • Grazziotin, Felipe G.; Hussam Zaher, Robert W. Murphy, Gustavo Scrocchi, Marco A. Benavides, Ya-Ping Zhang and Sandro L. Bonatto 2012. Molecular phylogeny of the New World Dipsadidae (Serpentes: Colubroidea): a reappraisal. Cladistics DOI: 10.1111/j.1096-0031.2012.00393.x - get paper here
  • Griffin,L.F. 1916. A catalog of the Ophidia from South America at present (June 1916) contained in the Carnegie Museum with descriptions of some new species. Mem. Carnegie Mus. 7 (3) [1915]: 163-228 - get paper here
  • Myers, Charles W. and Samuel B. McDowell 2014. New Taxa and Cryptic Species of Neotropical Snakes (Xenodontinae), with Commentary on Hemipenes as Generic and Specific Characters. Bulletin of the American Museum of Natural History 385 (1) : 1-112. - 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.
 
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