Hydroptila brigittae Gibon, 1987

Wells, Alice & De Moor, Ferdinand C., 2020, Hydroptilidae (Trichoptera) of Angola, a new genus, seven new species, and five new records, Zootaxa 4868 (4), pp. 495-514 : 500

Hydroptila brigittae Gibon

( Figs 8, 9 )

Hydroptila brigittae Gibon 1987b: 128 , fig. 27.

Material examined. ANGOLA: 1 male, [CAW 855J, slide], Huila Province, Cubango River, Site 21—downstream of rapids at ruins of hydropower plant, at light, -14.3384, 16.29331, 15/v/2017, I.S. Ferreira .

Diagnosis. The male is distinguished from other African species, including the structurally similar H. zairiensis Statzner 1977 by the robustly bilobed dorsal plate. However, it differs from H. zairiensis by having each lobe more elongate, about twice length of inferior appendages, and narrowly hooked caudoventrad apically, rather than having an apical or subapical spur as in several other species, and inferior appendages short, stout, length about 3X width.

Remarks. In describing this species, Gibon (1987b) distinguished it from other Ivory Coast species by the absence of a branch on the inferior appendages, but so far no Angolan species have been found to have such a branch.

Distribution. Described from three specimens from Guinea, and now recorded from further south in southwestern Angola.

Figures

FIGURES 1–9. Hydroptilidae, male genitalia. 1, Catoxyethira kunenica Mey & de Moor, 2019 [CAW 820J], ventral. 2, 3, Hydroptila maoae Gibon, 1994 [CAW 764R]: 2, ventral; 3, left lateral. Figures 4, 5, Hydroptila moxica sp. nov. [CAW 764Z]: 4, ventral; 5, left lateral. 6, 7, Hydroptila cuembica sp. nov. [CAW 757AZ]: 6, ventral; 7, left lateral. 8, 9, Hydroptila brigittae Gibon, 1987 [CAW 855J]: 8, ventral; 9, left lateral. Abbreviations: IX, X—abdominal segment IX and tergite X; ap. lb = apicolateral lobe of segment VIII (paired);.inf. app. = inferior appendage (paired); lt. lb. IX = lateral lobe of segment IX (paired); ph. = phallus; v. pl. = ventral plate.