Eudorylas mikenensis ( Hardy, 1950 )

FÖLDVÁRI, MIHÁLY, 2013, Taxonomic revision of the Afrotropical species of the tribe Eudorylini (Diptera, Pipunculidae), Zootaxa 3656 (1), pp. 1-121 : 79-81

Eudorylas mikenensis ( Hardy, 1950)

( Figs 26G–L , 40N–O )

Dorilas (Eudorylas) mikenensis Hardy 1950: 33 .

Diagnosis: Surstyli subsymmetrical, both with lobes in lateral view; SES with 3–4 hairs on both sides; gonopods subsymmetrical, both slightly pointed; phallic guide pointed, with a distinct groove.

Type material: Democratic Republic of Congo: 1♂, HT, Congo belge: PNA vers Rweru ( Volc. Mikeno ), 2400 m, (Bambous), 26 au 27-vii-1934, G.F. de Witte: 501 ; 1♂, PT, Congo belge: Ruanda, Lac N´Gando (pied Volc. Karisimbi ), 2400 m, 9-iii-1935, G.F. de Witte: 1247 ; 1♀, AT, same data as HT (all MRAC) ; 2♀, PTs [not E. mikenensis ], Congo belge: Kiwu, Rutshuru , 1285m, 1 an 6-vi-1935, G.F. de Witte: 1405 and 1402 (both USNM) .

Male

Head. Third antennal segment acuminate; brown. Face greyish pollinose. Frons, upper part shining black, lower part greyish pollinose except at tiny spot in the middle; eyes touching for distance equal to 4 times ocellar triangle. Occiput, upper half brownish pollinose, lower half slightly greyish pollinose.

Thorax. Humeri pale brown. Mesonotum (viewed obliquely from front) brownish pollinose, along anterior margin slightly greyish; brown from the side with greyish pollinosity. Scutellum brownish pollinose, with 2–3 very weakly developed hairs. Dorsocentral hairs very weakly developed. Halter: base and knob brown, stem pale brown.

Legs. Trochanters and base of femora yellow, femora black, knees, tibiae and tarsal segments yellow, last segment brown. Ventroapical row of 8–10 short, black spines on first four femora; 3–4 very weakly developed hairs on 3rd femur. Subapical (distal) spines on first four tibiae present. No anteromedial hairs on 3rd tibia. Hind trochanter with 4–5 erected pale hairs on ventral side. Pulvilli 0.7 times as long as 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 fully coloured. Hairs on tegula absent.

Abdomen (already dissected). Viewed obliquely from front tergites brownish pollinose, hind margins and sides as well. Hairs missing. 2–3 dark brown lateral spines on first tergite.

Genitalia. Surstyli subsymmetrical, both with lobes in lateral view; epandrium thickened; ST8 with medium sized m.a. ( Fig. 26H ). SES with 3–4 hairs on both sides; gonopods subsymmetrical, both slightly pointed ( Fig. 26J ); phallic guide pointed, with a distinct groove; phallus trifid, with membranous attachment along the tube until it divides; ejaculatory apodeme flat, apex broadening; sperm pump linear ( Fig. 26K ).

Female

As male except for the following characters. Frons, eyes separated; silver-grey pollinose on lower 1/4, otherwise greasy, occiput completely brownish pollinose. Ventroapical spines smaller on first 4 femora, no spines on f3. Fourth costal section 1.6 times as long as 3rd, 2/3 of pterostigma is coloured. Abdomen: lateral 1/3 of T2 greyish pollinose, sides of T3,4 with grey patches. Female ovipositor ( Figs 40N–O ): base almost invisible (covered by T6).

Remarks —Two female paratypes from USNM are different in coloration and shape of ovipositor from the AT, therefore they are believed to belong to a different species.

Distribution— Democratic Republic of Congo, Rwanda.

Figures

FIGURE 26. Male genitalia of Eudorylas meruensis (A–F) and E. mikenensis (G–L).—A: outer surstylus with phallic guide, phallus and outer gonopod, lateral view, B: dorsal view, C: inner surstylus, lateral view, D: sperm pump with ejaculatory apodeme, E: surstyli, dorsal view, F: ventral view with phallic guide, phallus (without ST8), G: outer surstylus with phallic guide and outer gonopod, lateral view, H: dorsal view, I: inner surstylus with phallic guide and inner gonopod, lateral view, J: ventral view with phallus and phallic guide (without ST8), K: sperm pump with ejaculatory apodeme, 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