6. Synophis insulomontanus Torres-Carvajal, Echevarría, Venegas, Chávez, & Camper, 2015

Range. Amazonian Andean slopes of central Peru, ~ 1100–1800m.

Description. Adult size ~ 340–380mm SVL and ~ 180–190mm TL (assuming> 340mm SVL is adult, and CORBIDI10418 has a truncated tail), keeled nuchal scales; no nuchal collar; intranasals in contact; 2 postoculars; 10–11 infralabials; 8–9 supralabials; 147–152 ventrals; 103–109 subcaudals; and (20-22)–(19-21)-19 dorsal scalerows, with single, heavy keel.

Notes. Known only from the holotype and paratypes.