rioplatensis Marino & Spinelli, 2002: 314 (male, female). Type locality: Argentina, Buenos Aires, Berisso, Los Talas, 34°52'16.47''S, 57°51'8.76''W. HT M (MLPA). Distr.- Argentina (Buenos Aires: type locality; Alberti, 35°1'28.63"S, 60°15'36.92"W; San Vicente, 35°1'27.13"S, 58°25'58.45"W; isla Martín García, área urbana, 34°11'8.00"S, 58°15'2.23"W; Ensenada, Reserva Natural Integral marginal forest, 34º47'21.2''S, 57º59'56.8''W; same data except grassland, 34°48'01.36"S, 58°00'26.26"W Sierra de la Ventana, Villa Ventana, 38°03'55''S, 61°53'00'', 350 m; Sierra de la Ventana, arroyo Belisario, 38º05'18.7''S, 61º55'46.9''W, 376 m. Córdoba: paraje Las Jarillas, río San Antonio, 31º32'02.8''S, 64º33'01.7''W, 820 m), Uruguay. Refs.: Marino & Spinelli, 2002: 314; Spinelli et al., 2005b: 109; Spinelli et al., 2010: 129; Marino et al., 2011a: 202; Ronderos et al., 2011: 1187; Cazorla et al, 2018: 5.
Diagnosis. A dark brown species of the squamitibia group, distinguished from other members of the species group by the following combination of characters: third palpal segment slightly swollen at base, tapering toward apex; scutum uniformly dark brown; legs brown except basal 1/2 of hind femur pale, knees pale; tibial hastate spines slender, pointed; spermathecae
ovoid with short neck; sternite 9 with anteromesal groove; aedeagus stout, basal arch very low, tip blunt; parameres widely separated at base.
Spinelli et al.; 2005 described and illustrated the fourth instar larva and pupa using Phase-Contrast and SSEM. They were collected from nest of the monk parakeet. Myiopsitta monachus monachus (Brodaert), in San Vicente Busnos Aires province. larvae have characters states typical of other species of Forcipomyia with herviborous ceratopogonid larvae.