Eudorylas acroapex ( Hardy, 1962 )

FÖLDVÁRI, MIHÁLY, 2013, Taxonomic revision of the Afrotropical species of the tribe Eudorylini (Diptera, Pipunculidae), Zootaxa 3656 (1), pp. 1-121 : 35

Eudorylas acroapex ( Hardy, 1962)

( Figs 11A–F )

Pipunculus (Eudorylas) acroapex Hardy 1962: 252 .

Diagnosis: 2–3 erect anteromedial hairs on 3rd tibia. The m.a. round, pv directed, occupies 2/3 of width of ST8. Surstyli symmetric, rounded at tip; ST8 with large m.a.; gonopods symmetric, tips with 3 hairs on each side; phallic guide pointed at tip (hooked in lateral view), with 2 projections in ventral view; phallus short, trifid, two branches teethed.

Type material: Madagascar: 1♂, HT, [West] Madagascar Tul., Sakaraha , 13.III.58, F. Keiser ( BMNH) .

Other material examined: Malawi: 1♂, Mlanje [hand-written], Nyasaland, 17.iii.1913., [leg.] S.A. Neave, No 1953–357, No 1953–343 [Hardy’s label: “ Dorilas n. sp. rel. to abditus Hardy, poor cond., Det. 1977 D.E. Hardy ”] ( BMNH) .

Male

Head. Third antennal segment acuminate; brown. Face silvery pollinose. Frons, upper part shining black, lower part silvery pollinose; eyes touching for distance equal to 3 times ocellar triangle. Occiput, lower half silvery pollinose, upper half less so.

Thorax. Humeri yellow. Mesonotum (viewed obliquely from front) brownish pollinose; silvery from the side. Scutellum slightly silvery, with 6–7 pairs of weakly developed hairs. Dorsocentral hairs weakly developed. Halter brown, middle of stem yellow.

Legs. Trochanters and base of femora yellow-brown, femora brown, shining ventrally, f3 posteriorly as well. Knees, tibiae and tarsal segments yellow, last segment brown. Ventroapical row of 7–8 black, short spines on first four femora; 5–6 spines on 3rd femur (same size). Subapical (distal) spines on first four tibiae missing. 2–3 erect anteromedial hairs on 3rd tibia. Hind trochanter with 2 brown hairs on ventral side (as long as width of f3 at base). Pulvilli distinctly shorter than last tarsal segment.

Wing. Cross-vein R-M at 1/3 of discal cell. Pterostigma fully coloured. Hairs on tegula missing.

Abdomen. Viewed obliquely from front tergites brownish pollinose (T1 silvery), hind margins with small grey triangles laterally (almost reaching each other on T5), sides completely greyish pollinose. No abdominal hairs. Lateral spines on first tergite dark brown, in a row of 4–5. Postabdomen in dorsal view: T5 1.2 times as long as ST8. Genitalia without dissection: ST8 subshining brown, cerci yellowish, m.a. round, pv directed, occupies 2/3 of width of ST8.

Genitalia. Surstyli symmetric, rounded at tip; epandrium small; ST8 with large m.a. ( Fig. 11B ). Borders of SES uncertain; gonopods symmetric, tips with 3 hairs on each side (the shape of the tip may vary) ( Fig. 11F ); phallic guide pointed at tip (the hook in lateral view is characteristic), with 2 lateral projections in ventral view; phallus short, trifid, two branches with teeth; ejaculatory apodeme linear; sperm pump short, round ( Fig. 11E ).

Female—Unknown.

Distribution— Madagascar, Malawi.

Figures

FIGURE 11. Male genitalia of Eudorylas acroapex (A–F) and E. aculeatus (G–L).—A: outer surstylus with phallic guide and outer gonopod, lateral view, B: dorsal view, C: inner surstylus, lateral view, D: surstyli, dorsal view, E: sperm pump with ejaculatory apodeme, F: ventral view with phallic guide and phallus (without ST8), G: outer surstylus with phallic guide and outer gonopod, lateral view, H: dorsal view, I: inner surstylus, lateral view, J: sperm pump with ejaculatory apodeme, K: ventral view with phallic guide and phallus (without ST8), L: surstyli, dorsal view. Scale bars: 0.1 mm