Atractus titanicus PASSOS, ARREDONDO, FERNANDES & LYNCH, 2009
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Atractus titanicus
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Atractus titanicus PASSOS, ARREDONDO, FERNANDES & LYNCH 2009: 431 Atractus badius – PÉREZ-SANTOS & MORENNO 1988:68 (part.) Atractus titanicus — WALLACH et al. 2014: 82 |
| Distribution | Colombia (Andes) Type locality: Colombia, Antioquia department, Sonsón municipality, 05°43’N, 75°19’W, Quebrada San Andrés, ca. 2400 m elevation. |
| Reproduction | oviparous (not imputed, fide Zimin et al. 2022) |
| Types | Holotype: ICN-MHN = ICN 10697, Female, 5 March 1996. |
| Diagnosis | Diagnosis: Atractus titanicus is distinguished from all congeners by the following: 17/17/17 smooth dorsal scale rows; two postoculars; long loreal; generally 1+2 temporals; seven supralabials, third and fourth contacting orbit; seven infralabials, first four contacting chinshields; seven or eight maxill ary teeth; three or four gular scale rows; four preventrals; 160–162 ventrals in females and 152–157 in males; 18–19 subcaudals in females and 21–30 in males; banded color pattern, with alternate dark and light dorsal rings (three scales wide); venter with cream-white ground color uniformly spotted by diffuse dark brown dots; large body size, females reaching 680 mm and males 545 mm; small tail size in females (7.8–9.2% SVL) and moderate (11.3–14.9% SVL) in males (Table 1). Among all congeners, A. titanicus shares exclusively with A. obesus a suite of characters including 17 dorsal scale rows, seven upper and lower labials, body diameter greater than 10 mm, maximum SVL above 600 mm, seven or eight maxillary teeth, and dorsal color pattern with alternate light and dark wide bands. The new species can be diagnosed from A. obesus by having 160–162 ventrals in females, four infralabials in contact with chinshields, dorsal bands never forming dyads, and venter with dark brown dots (vs. 171–183 ventrals in females, three infralabials contacting chinshields, dorsal bands forming dyads [black/ yellow/black], and complete rings crossing venter). (Passos et al. 2009) Additional details (2056 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Types: Two paratypes were identified previously as Atractus badius (Amaral, 1931, 1932). The study of this material (formerly ILS 20 and ILS 44, now MLS 134 and MLS 147) and three more specimens has revealed them to be distinct from A. badius (sensu Hoogmoed, 1980). |
| Etymology | The specific epithet ‘‘titanicus’’ is an adjective derived from the Greek name Titan, son of Uranus and Gaea who symbolize strong power and large size. The word alludes to the large body size of Atractus titanicus compared to other congeners. |
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