Trilepida acutirostris (Pinto & Curcio, 2011) new combination

Martins, Angele, Folly, Manuella, Ferreira, Guilherme Nunes, Garcia da Silva, Antonio Samuel, Koch, Claudia, Fouquet, Antoine, Machado, Alessandra, Lopes, Ricardo Tadeu, Pinto, Roberta, Rodrigues, Miguel Trefaut & Passos, Paulo, 2023, An evolutionary paradox on threadsnakes: Phenotypic and molecular evidence reveal a new and remarkably polymorphic species of Siagonodon (Serpentes: Leptotyphlopidae: Epictinae) from Amazonia, Vertebrate Zoology 73, pp. 345-366 : 345

Trilepida acutirostris (Pinto & Curcio, 2011) new combination

Siagonodon acutirostris Pinto & Curcio, 2011:58 (CHUNB 35648, holotype, from the municipality of Almas, state of Tocantins, Brazil).

Siagonodon acutirostris - Wallach et al. 2014: 665.

Siagonodon acutirostris - Nogueira et al. 2019.

Definition and Diagnosis.

Trilepida acutirostris is distinguished from all Neotropical leptotyphlopids by the following unique combination of characters: snout slightly acuminate in lateral and ventral views; absence of supraocular scale; middorsal cephalic plates distinctively enlarged; ocular scale subheptagonal, dorsal apex acuminate and anterior border straight, roughly vertical at eye level; first and second supralabial scales not reaching eye level; two supralabials (1+1); fused caudals absent; temporal scale not distinct; rostral subcircular in dorsal view; middorsal scales 169-183; midventral scales 161-173; subcaudal scales 9-11; 12 scales around the middle of the tail; dorsum uniformly pale copper on five dorsal scale rows, contrasting with the whitish cream tonality covering nine scale rows of venter, and thereby reaching the paraventral region of trunk. Osteology characters: the basioccipital participating in the formation of the foramen magnum, paired nasals and fused supraoccipitals.