Ommatius lucidatus, Scarbrough, 1997

Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2006, A review of the asilid (Diptera) fauna from Hispaniola with six genera new to the island, fifteen new species, and checklist, Zootaxa 1381, pp. 1-91 : 70-72

Key to the known species of the Ommatius lucidatus species group from Hispaniola

1. Anepisternum with stout bristles; prosternum yellow; cell m 3 long, cu-m basally ( Figs. 45, 46, 51); ocellar tubercle narrow, 1/4 or 1/3 longer than wide; fore femur (♂) wider than hind femur vertically; body> 12 mm ..................................................................... 2

- Anepimeron without stout bristles thin, if present seta-like; prosternum usually black; cell m 3 short, petiolate basally ( Figs. 48–50); ocellar tubercle about as wide as long; fore femur narrow (♂), about as wide as hind femur vertically; body <12 mm .......... 4

2. Palpus brown, proboscis entirely dark, narrow base yellowish-brown ventrally; hind basotarsomere black; fore femur (♂) with wide, scar-like, vertical groove posteriorly; hind tibia black, clavate (♂), apex twice as wide as base; hind basotarsomere (♂) with 3, black, blunt-tipped bristles apically; tergites 2–6 with abundant, erect, yellow bristles laterally (♂); sternite 6 with dense mass of long thin bristles ( Fig. 53), sternites otherwise with simple vestiture; sternite 8 strongly produced; wing (♂) and terminalia as in Figs. 46, 59–66............................................................................ geminus sp. nov.

- Palpus at least partly yellow; narrow base of proboscis yellow ventrally; fore femur (♂) without wide scar-like, vertical groove posteriorly; hind tibia slender, only slightly wider apically than basally; hind basotarsomere and abdomen without combination of characters above ........................................................................................................... 3

3. Palpus yellowish apically; hind tibia partially brown, basal 1/3 and apical 1/4 yellow; cell r 4 at apex of cell d, m 1 unusually short, cells d and m 3 unusually long, opaque (♂) ( Fig. 51); fore tibia with several short, spur-like bristles laterally, long bristles absent; hind basotarsomere with capitate bristle apically; sternites 4–7 with abundant, long thin bristles, sometimes forming dense masses, and flat, apically angled, bristles ( Fig. 58); terminalia as in Figs. 83–90..................................................... praelongus sp. nov.

- Palpus entirely yellow; hind tibiae mostly dark, base yellowish posteriorly; costal cell entirely and apical 1/3 of wing brownish, base of cell r 4 beyond apex of cell d, cells m 1, d, and m 3 not unusually short or long ( Fig. 45); fore tibia with long bristles laterally, sometimes twisted (♂); hind basal tarsomere without capitate bristle apically; sternite 6 with dense mass of short capitate bristles medially and long, thin, brown bristles in apical corner, apex flat, wider than base, notched ( Fig. 52) ............ elusivus Scarbrough

4. Palpus brown setose; metacoxa entirely and hind basotarsomere partly yellow basally; tergites densely yellowish tomentose; fore femur (♂) swollen with wide, shallow, vertical groove posteriorly, dorsal row of bristles pale, flat basally; middle femur with wide, shallow, vertical groove anteriorly; sternite 6 (♂) with thin, brown, pencil-like and short, yellow, mushroom-like bristles ( Fig. 54); terminalia (♂) yellow or brownish-yellow; fore femur (♀) yellow posteriorly, narrow apex sometimes blackish, fore coxa black anteriorly, yellow posteriorly… .................................... inflatus Scarbrough

- Palpus pale setose; metacoxa partly and hind basotarsomere dark; tergites mostly sparsely tomentose, mostly subshiny or shiny, if tomentum dense then limited to basal 3 tergites; fore and middle femora (♂) without shallow vertical grooves; sternite 6 (♂) without combination of characters above; terminalia (♂) black; fore femur (♀) in part black posteriorly, fore coxa variable ............................................................................. 5

5. Anepisternum entirely tomentose; wings hyaline; fore coxae usually yellow [ lucidatus sometimes blackish]; middle femur (♂) with 4–5 unusually long, thick, posteroventral bristles; fore tibia sometimes with fringe of thin setae laterally; hind basotarsomere blackish; apical corners of sternite 5 (♂) with sparse, black, hooked bristles .............. 6

- Anepisternum partly atomentose with black oval spot; wings blackish apically; middle femur of male with only thin posteroventral bristles; fore tibia with fringe of thin setae laterally; fore coxa black; hind basotarsomere yellowish-red; sternite 6 (♂) with abundant bristles laterally, those apically contrastingly long and stout ( Fig. 57); terminalia as in Figs. 75–82.............................................................................. maculosus sp. nov.

6. Fore and middle femora mostly yellow, apical 1/3 diagionally black; fore coxa usually black, sometimes partly yellow anteriorly, prosternum black; middle femur (♂) with long, stout bristles ventrally; sternite 7 (♂) with narrow, apically angled, cluster of compressed bristles arising from raised medioapical tubercle, sternites 4–5 with long bristles laterally, usually pale yellow ( Fig. 56) ............................. lucidatus Scarbrough

- Fore and middle femora anteriorly and apical 1/3 posteriorly black; fore coxa and prosternum yellow; middle femora with or without stout bristles ventrally ................. 7

7. Tarsi black, at most basotarsomere of fore and middle tarsi yellow; middle femur (♂) with long, stout bristles and numerous, black, spur-like bristles ventrally; fore tibia (♂) with sparse long setae; hind tibia as wide as hind femur in lateral view; apical margin of sternites 6–7 (♂) strongly produced and with abundant bristles ( Fig. 55); epandrium emarginate ventroapically; terminalia as in Figs. 67–74) ..................... laticrus sp. nov.

- Fore tarsus with basal two tarsomeres and middle tarsus with all tarsomeres yellow, narrow apices black; middle femur (♂) with only thin, short bristles ventrally, spurlike bristles absent; fore tibiae (♂) with fringe of mumerous long, wavy black and yellow setae; hind tibia narrow, less than 2/3 as wide as hind femur; apical margin of sternites 6–7 (♂) normal, not strongly produced or with abundant bristles; epandrium angular apically, without an emargination ................................. flavescens Scarbrough