Atractus trihedrurus AMARAL, 1926
Can you confirm these amateur observations of Atractus trihedrurus?
|Higher Taxa||Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||Southern Ground Snake|
|Synonym||Atractus trihedrurus AMARAL 1926: 105|
Atractus trihedrurus — AMARAL 1978: 117
Atractus trihedrurus — PASSOS et al. 2005
Atractus trihedrurus — WALLACH et al. 2014: 82
|Distribution||S Brazil (São Paulo south to Santa Catarina), elevation between 500–1400 m.|
Type locality: Southern Brazil
|Types||Holotype: IB (= IBSP) 3098|
|Diagnosis||Diagnosis: Atractus trihedrurus 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) 146–159 ventrals in females, 136–150 in males; (11) 16–23 subcaudals in females, 23–29 in males; (12) dorsum uniformly beige, grayish brown, or black in adults and beige or creamish red with black bands in juveniles and sub-adults; (13) venter creamish brown to uniformly black; (14) large body size, with females reaching 1010 mm SVL and males 735 mm SVL; (15) tail short in females (7.3–10.7% SVL), moderate in males (9.6–15.5% SVL); (16) hemipenis moderately bilobed, semicapitate, and semicalyculate [from Passos et al. 2010].|
|Comment||According to SAVAGE (1960: 31) probably not an Atractus. Status unclear until holotype will be re-examined.|
Habitat: Upper Montane Rainforest.