Nyssomyia Barretto, 1962

Lutzomyia (Nyssomyia) Barretto, 1962: 98 . Type species: Phlebotomus intermedius Lutz & Neiva, by original designation). Additional references: Lewis et al., 1977: 325; Martins et al., 1978: 94 (defined); Ready & Fraiha, 1981: 705 (defined, key). Lutzomyia species group intermedia Theodor, 1965: 184 (defined).

Psychodopygus (Trichophoromyia) Barretto, 1962: Forattini, 1971a: 105 (in part); Forattini, 1973: 415 (in part).

Nyssomyia Barretto (as genus): Artemiev, 1991: 73; Galati, 1995: 137; Galati, 2003: 46, 74, 123, 125 (key). Nyssomyia (Bichromomyia) Artemiev, 1991: 73 . Type species: Phlebotomus flaviscutellatus Mangabeira, by original designation).

Diagnosis. Clypeus shortest than eyes; antennal flagellomere 1 with a preapical papilliform sensilla; ascoids simple. Palpus segment 2 without Newstead sensillae; palpus segment 5 usually shorter than palpal segment 3; katepisternum without setae on anterior margin; Male: terminalia small, shorter than thorax; gonocoxite usually without persistent setae; gonostylus with 4 long spiniform setae, none of which is inserted on a long tubercle or process, the apical spiniform setae as long as gonostylus; paramere simple only with simple setae. Female: lacinia usually with two rows of teeth externaly; cibarium with 6 or more horizontal teeth, arch complete; spermatheca with 5 to 15 annuli, the apical annulus about as long as the preapical one, terminal capitullum large (Young & Duncan 1994, Galati 2003).

Remarks. This genus currently includes approximately 16 species, with four species distributed in Central America and only one reaching the southern portion of Mexico.