The Neotropical leptotyphlopid
Epictia tenella (Klauber) was previously
considered a member of the albifrons
Roberta Pinto and Felipe Curcio (2011) have now describe the geographic variation and hemipenial morphology of Leptotyphlops brasiliensis Laurent using 23 specimens, and re-examine its generic identity. They propose the new combination, Tricheilostoma brasiliensis, noting that the presence of two supralabials, as mentioned in the original description of S. brasiliensis, is not a common feature for this species. They also describe a new species of worm snake Siagonodon acutirostris from the savannas of the state of Tocantins, Brazil. The new species differs from others in the same genus by having an acuminate snout in lateral and ventral views, sub-circular rostral in dorsal view, and 12 scale rows around middle of tail.
Pinto, R. R. and F. F. Curcio. 2011. On the Generic Identity of Siagonodon brasiliensis, with the Description of a New Leptotyphlopid from Central Brazil (Serpentes: Leptotyphlopidae). Copeia (1):53-63.