Atractus serranus AMARAL, 1930
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Atractus serranus
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Sao Paulo Ground Snake |
| Synonym | Atractus serranus AMARAL 1930: 65 Atractus serranus — PASSOS et al. 2005 Atractus serranus — WALLACH et al. 2014: 80 Atractus serranus — NOGUEIRA et al. 2019 |
| Distribution | Brazil (Sao Paulo, Rio de Janeiro) Type locality: Serra de Paranapiacaba, Estado do São Paulo, Brazil. |
| Reproduction | oviparous |
| Types | Holotype: IBSP (= IB) 7238 (not 7239 as stated in some papers) |
| Diagnosis | Diagnosis: Atractus serranus is distinguished from all congeners by the following combination of characters: (1) 17/17/17 smooth dorsal scale rows; (2) generally two postoculars; (3) loreal moderate to long; (4) temporals 1+2; (5) generally seven supralabials, third and fourth contacting chinshields; (6) seven infralabials, first four contacting chinshields; (7) eight to ten maxillary teeth; (8) generally three gular scale rows; (9) generally three preventrals; (10) 150–163 ventrals in females, 141–147 in males; (11) 18–23 subcaudals in females, 26–29 in males; (12) dorsum uniformly black in adults and reddish brown to black scattered with irregular dorsal blotches in juveniles; (13) venter uniformly black in adults and usually paler in juveniles; (14) large body size in females (790 mm SVL) and males (515 mm SVL); (15) tail short in females (7.9–10.2% SVL), moderate in males (9.2–14.6% SVL); (16) hemipenis moderately bilobed, semicapitate, and semicalyculate [from Passos et al. 2010]. |
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