The taxonomic status of Psychodopygus squamiventris (Lutz & Neiva, 1912) is studied and new criteria for the identification of some of the knew material is established. The Amapa and French Guyana specimens belong to this species, and Phlebotomus maripaensis Floch & Abonnenc, 1946, represents the squamiventris male, droping so in its synonymi.
Psychodopygus; Phlebotominae; Psychodopygus squamiventris; Diptera; Psychodidae; Psychodopygus maripaensis