Atractus nasutus PASSOS, ARREDONDO, FERNANDES & LYNCH, 2009
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Atractus nasutus
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Atractus nasutus PASSOS, ARREDONDO, FERNANDES & LYNCH 2009 Atractus nasutus — WALLACH et al. 2014: 77 |
| Distribution | Colombia (Andes) Type locality: Colombia, Antioquia department, San Pedro municipality, Vereda La Lana, 06°26’52’’N, 75°36’26’’W, ca. 2600 m elevation. |
| Reproduction | oviparous (not imputed, fide Zimin et al. 2022) |
| Types | Holotype: CSJ 561, male, 1954, Hermano Daniel. |
| Diagnosis | Diagnosis: Atractus nasutus is distinguished from all congeners by the following: 17/17/17 smooth dorsal scale rows; two postoculars; long loreal; 1+2 temporals; seven supralabials, third and fourth contacting orbit; seven infralabials, first four contacting chinshields; 12 maxillary teeth, lacking diastema; three or four gular scale rows; four preventrals; 130 ventrals in the single male; 23 subcaudals; reddish brown dorsum, except by a light occipital band; creamish brown venter; small body size (single male with 176 mm SVL); moderate tail size (13.1% SVL); slightly bilobed, semicapitate, and semicalyculate hemipenis (Table 1). Among all congeners, Atractus nasutus shares only with A. lasallei and A. lehmanni the following suite of characters: 17 dorsal scale rows; seven upper and lower labials, first four contacting chinshields; generally four preventrals; 23–28 subcaudals in males; small to moderate tail size; long, robust, and acuminate caudal spine; reddish brown dorsum, with a light occipital band or blotches; brown pigmentation on venter. Atractus nasutus differs from both by having a distinctly acuminate snout, 12 maxillary teeth, 130 ventrals, large and complete occipital band, and a semicalyculate hemipenis (vs. truncate snout and 7–9 maxillary teeth in both species; 154–167 ventrals in males of A. lasallei and 139–155 in males of A. lehmanni; no occipital band in A. lasallei and narrow and incomplete occipital band in A. lehmanni; bicalyculate hemipenis in both species). (Passos et al. 2009) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 1933 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | |
| Etymology | Named after the Latin adjective ‘‘nasutus’’ meaning prominent snout region (= large-nosed). This word is used here in allusion to the acuminate snout of the new species. |
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