Eutrachelophis papilio ZAHER & PRUDENTE, 2019
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Eutrachelophis papilio
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Eutrachelophis papilio ZAHER & PRUDENTE 2019: 9 Taeniophallus occipitalis – AVILA-PIRES et al. 2009 Eutrachelophis undescribed species – MYERS & MCDOWELL 2014 Eutrachelophis papilio — NOGUEIRA et al. 2019 |
| Distribution | Brazil (Amazonas) Type locality: Fazenda Scheffer (8°20′S, 65°43′W), Ituxi River, Municipality of Labrea, state of Amazonas, Brazil |
| Reproduction | |
| Types | Holotype. MPEG 25471, collected by Teresa Cristina Sauer de Avila-Pires on February 14, 1997 (fig. 6 in ZAHER & PRUDENTE 2019). Paratypes. MPEG 18250, from Km 2 of BR 3041 (9°45′S, 67°39′W), Municipality of Rio Branco, state of Acre, Brazil, collected by Marinus Hoogmoed and Teresa Cristina Sauer Avila-Pires on January 1, 1990. MPEG 19950, Municipality of Careiro da Varzea (3°13′ S, 59°49′ W), state of Amazonas, Brazil, collected by Shawn S. Sartorius on December 22, 1998. MPEG 23862, Municipality of Coari (4°53′ S, 65°21′ W), state of Amazonas, Brazil, collected by Gleomar Maschio and Alessandra Travasso on November 19, 2009. MZUSP 10530, Urucu River (Locality roughly at 05°S, 65°W), state of Amazonas, Brazil, collector and date unknown. |
| Diagnosis | Diagnosis: Eutrachelophis papilio is distinguished from all other species by the following combination of characters: 15-15-15 number of dorsal scale rows; three gular scale rows, wider than long; 8 supralabials, 2-3 contacting loreal and 3-5 in orbit; 9 infralabials, 1–5 contacting anterior chinshields and 5-6 posterior chinshields; 139-145 ventrals; 68-76 subcaudals; conspicuous white butterfly-shaped ocellus on the nape; hemipenis slightly bilobed with apical disks; and 22-25 maxillary teeth subequal in size and recurved, followed by diastema and two ungrooved fangs. |
| Comment | Abundance: Known from only 6 individuals (Moraes et al.2021). Habitat: forest floor, moving near tree roots, in a terra firme forest, with large trees and streams nearby (Citeli et al. 2020). Distribution: see map in Moraes et al. 2021 for localities. |
| Etymology | The specific epithet is derived from the Latin word “papilio”, gender masculine, and noun in apposition, in reference to the butterfly-shaped white ocellus on the nape. |
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