Conops schachti, Stuke, 2019

Stuke, Jens-Hermann, 2019, New conopid records from the Afrotropical Region (Diptera: Conopidae). Part 2: Conopinae excluding Physocephalini, Israel Journal of Entomology (Oxford, England) 49 (2), pp. 277-349 : 325-326

Key 8: Identification of Conops s. str. from the Afrotropical Region.

1 Abdomen reddish brown with distinct and contrasting bright yellow band covering tergite 4 and hind third or so of tergite 3 ( Fig. 67); no frontofacial spot; face and gena completely covered with shining dust; mediotergite with two submedial fields of 4–5 black setae; wing slightly tinged yellowish brown but without obvious markings; large, distinct species (wing length usually> 12 mm) ................................................................................ C. flavicauda (Bigot, 1880)

– Abdomen without distinct and contrasting yellow band; black frontofacial spot present; mediotergite without setae; gena partly without shining dust ( Fig. 65); wing typically blackish apically, obviously contrasting with the almost completely hyaline basal radial cell br (Fig, 63); costa, subcosta and vein R 1 may be yellowish and obviously contrasting with black veins at wing tip ( Fig. 63); smaller species (wing length <12 mm)............................................................. 2

2 Silver dusting of antennal grooves restricted to ventral half; frons uniformly yellow; abdomen orange, with tergites 1–2 more or less black; scutellum black or orange-brown, mediotergite black ............................................................... 3

– Antennal grooves completely silver dusted; frons may have distinct markings; abdomen more or less black, with tergites 1–2 orange; scutellum orange to brown, without any black colouration, mediotergite variably coloured........... 4

3 Scutum orange-brown with blackish anterior patch and second blackish area immediately in front of the black scutellum ( Fig. 88); antennae black to dark brown; proboscis black; ♀ theca unknown ................ C. pulcher Camras, 2000

– Scutum may have three black lines fused in front of black scutellum (from redescription of ♂ holotype by KrÖber (1915 b )), or scutum with blackish anterior patch but lacking blackish patch in front of orange-brown scutellum (based on female reported here); antenna light reddish yellow; proboscis orange; ♀ theca large, in side view about as long as height of tergite 6 and about as broad as tergite 7................................................................ C. africanus (Rondani, 1873)

4 Abdomen entirely light orange ( Fig. 62); fore and middle tarsi appearing black to dark brown (due to dense black setulae) in contrast to lighter brown hind tarsi; ♀ theca narrow and elongate ( Fig. 66).......... C. aurantius Brunetti, 1925

– Abdomen mainly brown to black; all tarsi brown; ♀ theca may be different... 5

5 Thorax with scutum and mediotergite uniformly brown; frons as in Fig. 95: with clearly marked brown posterior margin and a brown central stripe; scutum medially and sublaterally without black setulae; hind femur dorsally at its tip with several outstanding long black setulae; all femora ventrally with rows of small, stout, black setae; ♀ abdomen in dorsal view markedly constricted in apical part ( Fig. 91); tergite 2 with almost no setulae............................... C. schachti n. sp.

– Scutum at least with black spot, mediotergite black; frons different, without clearly brownish posterior margin; scutum entirely covered with black setulae in most species; hind femur may lack outstanding dorsal setulae; ♀ abdomen not constricted in dorsal view ( Fig. 69); tergite 2 with black setulae............... 6

6 Scutum reddish brown with two black spots; abdomen black, only tergites 1+2 red brown laterally; ♀ theca small; projecting less than tip of postabdomen. [based on original description]................................... C. frontalis Kröber, 1915

– Scutum completely brown or with different black colouration; abdomen more brownish, at least at tip partly brown; ♀ theca longer; projecting beyond tip of postabdomen ( Fig. 70)...................................................................................... 7

7 Scutum with large black central patch ( Fig. 82); vertex anteromedially with obviously roughened surface ( Fig. 83); apical aristomere much longer than basal and medial aristomeres together, and distinctly long pointed ( Fig. 84); no distinct dusting stripe between middle coxa and notopleuron; scutum with black setulae all over; alula at outer marginal area broadly bare of microtrichia and without setulae on hind margin; hind femur dorsally without long, outstanding setulae; claws with very narrow black tip only; ♂ postgonite evagination with line of broad brown teeth at base ( Fig. 81); ♀ theca with black setulae apically on anterior and posterior surfaces ( Fig. 85) ....................................................... .................................................................... C. pallidemarginatus Kröber, 1936

– Scutum with small central blackish spot anteriorly ( Fig. 74); vertex with uniformly smooth surface ( Fig. 73); apical aristomere as long as basal aristomere only, not pointed ( Fig. 76); distinct dusting stripe between middle coxa and notopleuron ( Fig. 68); scutum without black setulae anteromedially and laterally; alula completely covered with microtrichia and with setulae on hind margin; hind femur dorsally at its tip with several outstanding setulae; claws with obvious black tip ( Fig. 68); ♂ unknown. ♀ theca with black setulae apically only on the posterior surface ( Fig. 70) .................................... C. occultus n. sp.