Eudorylas flexus (Hardy, 1949)

FÖLDVÁRI, MIHÁLY, 2013, Taxonomic revision of the Afrotropical species of the tribe Eudorylini (Diptera, Pipunculidae), Zootaxa 3656 (1), pp. 1-121 : 64-65

Eudorylas flexus (Hardy, 1949)

( Figs 21A–G , 40H–I )

Dorilas (Eudorylas) flexus Hardy 1949 a: 34 .

Diagnosis: Eyes touching for distance equal to 1.5 times ocellar triangle. Third trochanter with long projection, f3 thickened and bent, hind tibia bent in the middle. T5 0.7 times as long as ST8. Surstyli’s inner projection in long; epandrium small, slightly asymmetrical; ST8 very large, without m.a.; phallic guide with hook-like projection on the left in ventral view, membranous ventrally, with minute hairs dorsally; phallus trifid, splitting only on distal part; ejaculatory apodeme parachute-shaped, with 3 lobes; sperm pump with 3 appendages.

Type material: Namibia: 1♂, HT, Okahandia, 1–12.i.1928, S.W.Africa, R.E. Turner, Brit. Mus., 1928-61; 1♀, AT, same as HT, 19–29.xii.1927 [in Hardy 1949 a: 35 as “ 19–29.III.1927 ”], No. 1928-53 (both BMNH) .

Other material examined: Namibia: 1♂, Ghaub 47, 19°28'S 17°00'E, Tsumeb district , 16–26 Jul.1986, J. Irish, Malaise trapping ; 1♀ Omaruru dist[rict], Ugab R [iver] n[ea]r Brandberg Wes [t], 20°57’39’’S 14°07’55’’E, 21– 24.x.1998, Kirk-Spriggs & Marais, Malaise trap sample (both NMNW) . South Africa: 1♂, E. Transvaal, 25km ne. Ohrigstad , Echo Caves 2430DA, XII 6–7, 1976. R. Miller, Sewage-seepage area ( NMSA) . Zimbabwe: 3♂, N. Vumba, S. Rhodesia, 4.3.1965, D. Cookson (2 NMSA, 1 HNHM) .

Male

Head. Third antennal segment acuminate; yellow. Face silvery pollinose. Frons, upper part shining brown, lower part silvery pollinose; eyes touching for distance equal to 1.5 times ocellar triangle. Occiput slightly greyish pollinose.

Thorax. Humeri black. Mesonotum (viewed obliquely from front) probably greyish pollinose (surface greasy); similarly on the side. Scutellum greyish pollinose, almost bare, only some weakly developed pale hairs. Dorsocentral hairs very weakly developed. Halter yellow, base brown.

Legs. Trochanters amber coloured, base of femora yellow, femora brown, knees and tibiae yellow. Third trochanter with long projection, f3 thickened and bent, hind tibia bent in the middle. Tarsal segments yellow, last segment brown. Ventroapical row of 3–6 weak spines on first four femora; no spines on 3rd femur, only some whitish hairs. Subapical (distal) spines on first four tibiae present. No anteromedial hairs on 3rd tibia. Hind trochanter with short whitish hairs on ventral side. Pulvilli slightly longer than last tarsal segment.

Wing. Fourth costal section 1.2 times as long as third costal section. Cross-vein R-M at 1/3 of discal cell. Pterostigma almost fully coloured. Hairs on tegula absent.

Abdomen. Viewed obliquely from front tergites brownish pollinose, sides more silvery pollinose. Hairs missing, 2 dark lateral spines on first tergite. Postabdomen in dorsal view: S7 visible; T5 0.7 times as long as ST8. Genitalia without dissection: ST8 swollen, no m.a., EP and SS yellow and small compared to ST8.

Genitalia. Surstyli subsymmetrical, their inner projection in long; epandrium small, slightly asymmetrical; ST8 very large, without m.a. (Fig. 21D). The borders of SES are not clear, with a patch of hairs on the left and dispersed hairs on the right; gonopods flat and rounded; phallic guide with hook-like projection on the left in ventral view ( Fig. 21E ), membranous ventrally, with minute hairs dorsally; phallus trifid, splitting only on distal part, apices pointed ( Fig. 21A ); ejaculatory apodeme parachute-shaped, with 3 lobes; sperm pump with 3 appendages ( Figs 21B, F ).

Female

As male except for the following characters. Frons, eyes separated; silver-grey pollinose except in front of ocellar triangle for length equal to 2–3 times ocellar triangle, colour-change continuous. Humeri yellow-brown, femora not thickened, trochanters without projection, t3 slightly bent. Pulvilli and claws about 1.5 times as long as last tarsal segment. Abdomen golden-brown pollinose, slightly greyish laterally. Dispersed whitish hairs on segments. Female ovipositor as in Figs 40H–I .

Distribution— Namibia, South Africa, Zimbabwe.

Figures

FIGURE 21. Male genitalia of Eudorylas flexus (A–G) and E. gabela sp. nov. (H–L).—A: outer surstylus with phallic guide and phallus, lateral view, B: sperm pump with ejaculatory apodeme, lateral view, C: inner surstylus, lateral view, D: dorsal view, E: ventral view with phallic guide and phallus (without ST8), F: sperm pump with ejaculatory apodeme, ventral view, G: surstyli, dorsal view, H: outer surstylus with phallic guide, lateral view, I: ventral view with phallus and phallic guide (without ST8), J: inner surstylus, lateral view, K: dorsal view, L: surstyli, dorsal view. Scale bars: 0.1 mm

FIGURE 40. Female ovipositors.—A–B: Eudorylas aethiopicus, C–D: Eudorylas bredoi, E: Clistoabdominalis lomholdti, F: Clistoabdominalis nitidifrons, G: Eudorylas falcatus, H–I: Eudorylas flexus, J: Clistoabdominalis crassus, K: Eudorylas setiformis, L: Clistoabdominalis lomholdti, M: Dasydorylas sordidatus, N–O: Eudorylas mikenensis, P–Q: Eudorylas decorus, R–S: Eudorylas galeatus, T: Eudorylas sinuosus, U: Eudorylas wittei, V–W: Dasydorylas evanidus. Scale bar: 0.5 mm