Basileunculus Rafael, 1987 (Diptera: Pipunculidae) of Colombia, with Description of Three New Species and an Updated Key to Males of the Neotropical Species.

Basileunculus Rafael, 1987 is exclusive of the Neotropical region and is a poorly studied group, completely unknown in Colombia. Three new species of Basileunculus are described from Colombia, namely Basileunculus elieceri sp. nov. (type-locality: Cabaña Chaina, Santuario de Fauna y Flora Iguaque), B. elongatus sp. nov. (type-locality: Santuario de Fauna y Flora Iguaque), and B. tayronensis sp. nov. (type-locality: Parque Nacional Natural Tayrona). Basileunculus rex Curran, 1934 is recorded for the first time in Colombia, with an amended diagnosis. Descriptions, illustrations, diagnosis, distribution maps of new species, and a dichotomic key for all of the Neotropical species are presented.