Phalotris sansebastiani JANSEN & KÖHLER, 2008
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Phalotris sansebastiani
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Phalotris sansebastiani JANSEN & KÖHLER 2008 Phalotris sansebastiani — WALLACH et al. 2014: 548 |
| Distribution | Bolivia (Santa Cruz) Type locality: Hacienda San Sebastián, S 16° 21.676’, W 62° 0.017’, 550 elevation, Provincia Ñullo de Chávez, Departament of Santa Cruz, Bolivia. |
| Reproduction | oviparous |
| Types | Holotype: MNK R 4345, adul male; paratypes: MNKR, SMF Paratypes: MNKR, SMF |
| Diagnosis | Diagnosis: Phalotris sanschastiani is a small fossorial snake (up to 495 mm total length) of the tricolor group (as defined by FERRAREZZI 1993). The new species can be distinguished from the other species of the tricolor group by having a triangular projection of the red snout colouration reaching onto the parietals. Additionally, P. sansebastiani differs from the other species of the group by the following characteristics (conditions for P. sansebastiani in parantheses): From P. mertensi: black tips on bright red dorsals present (absent); length of black collar 3.0-3.5 dorsal scales (usually 4-5 dorsal scales); number of ventrals 223-236 in males and 234-252 in females (193-205 in males and 212-215 in females); maximum total length 1.5 m (0.5 m). From P. cuyanus: ground colour greyish-yellow to ochre (red); number of ventral scales in males 216-224, mean 220.3 (193-205, mean 200). From P. tricolor: white nuchal collar 1.5-6.0 scales long, usually 3-4, shorter than the black collar (white and black nuchal collar usually subequal and 4-6 dorsal scales long); the black collar reaches onto the ventrals, in some specimens black collar forming a complete ring (usually reaches first scale row, reaches the extreme tips of the ventrals); head totally black in adults, the snout is grey in juveniles (anterior supralabials, snout and forehead reddish, forming a red, triangular blotch on the snout; blotch has sharp edges, reaches the parietals and nearly contacts the white collar); lower side of head is entirely black (anterior supralabials reddish, with one or more white blotches under the eye, followed posteriorly by black supralabials); infralabials, gular and mental region heavily spotted with black, or uniform black (mental region and infralabials are whitish with scattered grey to black dots); background colour of dorsum yellowish to chestnut-brownish red, generally with scattered black points on dorsum forming middorsal and dorsolateral lines (uniformly brilliant red without black markings); ventral colour generally eitron yellow (whitish). From P. matogrossensis: Length of white nuchial collar more than 6 dorsal scales (usually 4-6 dorsal scales long); white nuchal collar is longer than the black collar, which is generally 5 seales long (white nuchal collar is subequal to black collar, usually not more than I scale different in length from the black collar, which is usually 4-6 dorsal scales long); the black collar hardly reaches the first dorsal scale row, and never reaches the ventrals (usually reaches first scale row; reaches the extreme tips of the ventrals in some individuals); dorsal side of head black, snout with small red blotch darkened with black spots; red blotch not forming a triangle and not with sharp edges (anterior supralabials, snout and forehead reddish, forming a red, triangular blotch on the snout; blotch has sharp edges and reaches the parietals and nearly contacts the white collar); lower side of head white, supralabials whitish or only faintly mottled with black, and dark blotches only from angle to the mouth to fourth supralabial (lower side of head not white, anterior supralabials reddish, with one or more white blotches under the eye, followed posteriorly by black supralabials); infralabials, gular and mental region immaculate white (infralabials, gular and mental region whitish with scattered grey to black dots or mottled with black); head wider at level of eyes than neck (head of the same width as the neck); shape of snout in adults rounded (shape of snout in adults pointed). (Jansen & Köhler 2008) Additional details (1943 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | |
| Etymology | Named after the type locality. |
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