Reissa roni Evenhuis & Báez sp. n. (Figs 31, 39) Etymology: The species is named for Ronald Englund, friend and colleague of NLE, and who has contributed much rare and interesting Diptera material through his extensive collecting activities. Material examined: Holotype Ò and 1Ò4^ from SPAIN: Canary Is: Tenerife I: Las Cañadas, 12.iv.84, M. Báez. Holotype in MABC; paratypes in MABC and BPBM. Description: Ò^. Length: 0.98–1.06 mm. Head: Black; occiput black, yellow laterally; postgena yellow; eyes dichoptic, separated at vertex by slightly more than distance between lateral ocelli; frons depressed medially, yellow to yellowwhite; face yellowish, tip of oral margin brown; antennae black; scape minute; pedicel cylindrical, slightly wider than long; first flagellomere ovoid, length about 1.5 x greatest width; second flagellomere about third length of first, with subapical style; venter of head yellowish, shiny; proboscis dark brown, length slightly longer than head height; labrum sclerotised, stiff, pointed apically, length slightly less than height of oral margin; palpus not evident. Thorax: Mesonotum and scutellum subshining dark brown to black, with scattered dark hairs; humeral callus, thin notopleural line to wing base and thin ridge along postalar callus yellow; coxae and legs brown, trochanters and apices of femora yellowish; halter stem brown, knob yellow. Wing (Fig. 31): Hyaline; veins brown; costa extends completely around wing, as thin vein beyond end of vein R 4+5; vein Sc incomplete, ending at level just beyond origin of Rs; Rs evanescent at connection with R 1; R 4+5 straight to wing margin, not curved; vein separating cells br and bm evanescent; vein M 1 slightly curved toward wing margin; M 2 fairly straight to wing margin; crossvein dm-cu closing discal cell present; discal cell short, subequal in width and height; vein A 1 evanescent; sparse fringe of hair on posterior margin of wing rather long. Abdomen: Dorsum dark brown, with scattered dark hairs, pale brown posteriorly on terga 3– 6; venter brown. Male genitalia (Fig. 39): Gonocoxae extremely reduced in size, gonostyli absent, gonocoxal apodemes present, extending below epiphallus to level of middle of aedeagal apodeme; epiphallus with extremely long, thin aedeagal tube, recurved upon itself at base; aedeagal tip bifid; aedeagal apodeme axe-shaped in lateral view; epandrium subrectangular, with large cerci that extend below and above epandrium, posterodorsal corner of epandrium (Fig. 39 c) with sharply pointed inner projection, surstylus-like. Female genitalia not dissected.

Published as part of Greathead, D. J. & Evenhuis, N. L., 2001, Annotated keys to the genera of African Bombylioidea (Diptera: Bombyliidae; Mythicomyiidae), pp. 105-224 in African Invertebrates 42 (1820) on page 128, DOI: 10.5281/zenodo.7909975