Atractus longimaculatus Prado 1939 .
Holotype ILS 170 (= actual acronym MLS) (fig. 36), male. “ Região do Quindio ”. Jan. 1923.
Remarks: Junior synonym of A. crassicaudatus according to Passos and Lynch (2010).According to the original label, the specimen was collected in Pacho, Cundinamarca and not in Quindío as indicated the original publication. Specimen MLS 170 is hydrated, presents a slight deterioration but is in good state of preservation.