Hydroptila maoae Gibon, Guenda & Coulibaly

(Figs 2, 3)

Hydroptila maoae Gibon, Guenda & Coulibaly 1994: 110, figs 34–37.

Material examined. ANGOLA: 2 males, [CAW 757BA], Moxico Province, Cuembo River, Site 6— Cuembo River campsite bridge, at light, -13.5265, 19.27971, 01/xi/2016, I.S. Ferreira ; 4 males, [CAW 764 R, one on slide], Moxico Province, Cuando River, Site 8— Cuando campsite bridge, light trap, -13.607, 19.53235, 02/xi/2016, I.S. Ferreira ; 1 male, [CAW 804 AB], Moxico Province, Cuanavale, Site 12— Cuanavale River tributary at confluence, at light, -13.1233, 18.89875, 18/xi/2016, I.S. Ferreira .

Diagnosis. The male of this species shares with H. aegyptia Ulmer 1963 and others the Y-shaped ventral plate in the male genitalia, a characteristic of the H. pulchriformis -group of Marshall (1979) (as noted by Gibon et al. (1994)), but is distinguished by the sinuous form of the tip of the very elongate phallus and the deep almost Vshaped form of abdominal segment IX in ventral view.

Remarks. The phallus appears to lack an associated titillator. Several females taken in the same sample may be associated with this species, or with the closely similar new species, Hydroptila moxica sp. nov.

Distribution. This species, described from Burkina Faso, was taken at two sites on the Cuembo River and also on the Cuando and Cuanovale Rivers in Moxico Province of eastern Angola, and was reported by Gibon et al. (1994) from a number of sites across West Africa.