Dipsas peruana (BOETTGER, 1898)
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Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
Subspecies | |
Common Names | E: Peru Snail-eater, Peruvian Snail-Eater E: Many-scaled Snail-eater (polylepis) E: Venezuela Snail-eater (latifrontalis) E: Boettger's Snail-eater (boettgeri) S: Caracolera Peruana |
Synonym | Leptognathus peruana BOETTGER 1898: 128 Leptognathus boettgeri WERNER 1901:11 Leptognathus boliviana WERNER 1909: 240 Leptognathus boliviana — WERNER 1910: 282 Leptognathus polylepis BOULENGER 1912: 422 Sibynomorphus peruanus — BARBOUR & NOBLE 1920:620 S.[ibynomorphus] bolivianus — AMARAL 1923:93 Sibynomorphus mikanii — AMARAL 1925:9 (in part) Sibynomorphus mikanii peruanus — AMARAL 1930a:31 (in part) Tropidodipsas polylepis — AMARAL 1930:31 Dipsas latifrontalis — PETERS 1960:103 (in part) Dipsas polylepis — PETERS 1960: 96 Dipsas boettgeri — PETERS 1960: 98 Dipsas peruana — PETERS 1960: 110 Dipsas peruana — PETERS & OREJAS-MIRANDA 1970:89 Dipsas mikanii peruanus — SCHMIDT & WALKER 1943: 288 Dipsas peruana — HARVEY & EMBERT 2008: 79 Dipsas peruana — RIVAS et al. 2012 Dipsas peruana — WALLACH et al. 2014: 233 Dipsas peruana — ARTEAGA et al. 2018 |
Distribution | SE Peru (Amazonas, Cajamarca, Pasco, Puno, Loreto, Cusco), Colombia (Boyaca); elevation 1700-2100 m Type locality: Santa Ana, Cuzco Province, Peru boettgeri: S Peru, N Bolivia; Type locality: Chanchamayo, Peru. Leptognathus boliviana: Bolivia; Type locality: “Beni River, Bolivia”; latifrontalis: Venezuela (Lara, Aragua, Carabobo, Distrito Federal, Miranda, Vargas), S Ecuador, Colombia [Castro,F. (pers. comm.)]; Type locality: Aricagua, Edo. Mérida, Venezuela. polylepis: Peru; Type locality: Huancabamba, Peru, elevation above 3000 ft. |
Reproduction | oviparous |
Types | Holotype: SMF 20801, female Holotype: BMNH 1946.1.2078 [polylepis] Holotype: BMNH 1946.1.2077 [latifasciatus] Holotype: BMNH 1946.1.20.98, adult female [latifrontalis] Holotype: lost, was ZMH (fide J. Hallermann, pers. comm., 2 May 2024) [Leptognathus boliviana] |
Diagnosis | Diagnosis: Dipsas peruana differs from all described species of Dipsas based on the following combination of characters: (1) 15/15/15 smooth dorsals with moderately enlarged vertebral row; (2) one loreal and one preocular in contact with orbit; (3) 8–9 supralabials with 4–6 or 3–5 contacting orbit; (4) one pair of infralabials in contact behind symphysial; (5) 177–200 ventrals in males, 180–203 in females; (6) 75–127 divided subcaudals in males, 79–105 in females; (7) dorsal and ventral ground color brown to dark brown (light brown in juveniles) with 33–43 blackish brown to complete black, white to cream edged circular to vertically elliptical blotches that are longer than interspaces; head dark brown with dingy cream reticulations and different degrees of whitish edging on the labial scales, and a thin (1–3 scales long) white to light grayish brown irregular nuchal collar; dorsal blotches extending marginally onto ventrals and rarely fusing midventrally; (8) 199 mm SVL in males, 610–725 mm in females; (9) 85 mm TL in males, 155–241 mm in females. Additional details (996 characters) are available for collaborators and contributors. Please contact us for details. |
Comment | Synonymy after PETERS & OREJAS-MIRANDA 1970 and HARVEY & EMBERT 2008. Amaral (1929) synonymized L. praeornata Werner, 1909, from Venezuela, with Sibynomorphus incertus. Fernandes et al. (2002) synonymized D. latifasciata with D. polylepis. Harvey and Embert (2009) resurrected the name D. praeornata for the Venezuelan coastal range population and relegated D. latifrontalis to a synonym of D. peruana. Arteaga et al. 2018 removed D. palmeri (as well as latifasciata and latifrontalis) from the synonymy of peruana. Distribution: peruana not in Venezuela but latifrontalis is (Luis Esqueda, pers. comm., 21 April 2016, see Natera-Mumaw et al. 2015 for details). Not in Ecuador fide Torres-Carvajal et al. 2019: 299 ff). Habitat: fully arboreal (Harrington et al. 2018). |
Etymology | D. peruana has been named after its type locality, D. boettgeri after Oskar Boettger (1844-1910), herpetologist at the Senckenberg Museum in Frankfurt am Main. |
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