Atractus werneri PERACCA, 1914
Can you confirm these amateur observations of Atractus werneri?
|Higher Taxa||Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||Werner's Ground Snake|
|Synonym||Atractus werneri PERACCA 1914: 102|
Atractus werneri — DUNN 1944: 21
Atractus werneri — PASSOS & LYNCH 2010
Atractus werneri — WALLACH et al. 2014: 84
|Distribution||Colombia (Cundinamarca: Western slopes of Eastern Cordillera), elevation 1200-1800 m|
Type locality: Viotá, Dep. de Cundinamarca, Colombia, 1830 m elevation, (04° 26’ N, 74° 31’ W).
|Types||Holotype: MNHN 91.506|
|Diagnosis||Diagnosis.—Atractus werneri is distinguished from all congeners by having: (1) 17/ 17/17 smooth dorsal scale rows; (2) two postoculars; (3) loreal long; (4) temporals 1 + 2; (5) generally seven supralabials, third and fourth contacting orbit; (6) generally seven infralabials, first three contacting chinshields; (7) 6–9 maxillary teeth; (8) three or four gular scale rows; (9) three or four preventrals; (10) 158–174 ventrals in females, 148–160 in males; (11) 21–36 subcaudals in females, 27– 37 in males; (12) dorsum uniformly brown or having conspicuous vertebral and dorsolateral lines; (13) venter predominantly creamish white, occasionally having diffuse and irregu- lar dark brown blotches; (14) moderate body size, females reaching 346 mm SVL, males 330 mm SVL; (15) small to moderate tail length in females (8.7–15.2% SVL), moderate to long in males (13.2–17.1% SVL); (16) hemipenis slightly bilobed, semicapitate, and semicalyculate.|
|Comment||The date of publication of Peracca’s paper is usually given as 1914. However, it has been shown that his paper was actually published at least in early 1913 but most likely in 1912.|
Similar species: A. obtusirostris and A. melanogaster.
|Etymology||Named after Franz Werner (1867-1939), Austrian zoologist.|
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