Dasydorylas evanidus (Hardy, 1949)

FÖLDVÁRI, MIHÁLY, 2013, Taxonomic revision of the Afrotropical species of the tribe Eudorylini (Diptera, Pipunculidae), Zootaxa 3656 (1), pp. 1-121 : 25-28

Dasydorylas evanidus (Hardy, 1949)

( Figs 8A–F , 40V–W )

Dorilas evanidus Hardy 1949 a: 31 — comb. nov.

Dorilas (Eudorylas) dorsalis Hardy 1950: 26 — syn. nov.

Dorilas (Eudorylas) apiculatus Hardy 1961: 133 — syn. nov.

Diagnosis: Fourth costal section very short (0.5 times the length of C3). All tibiae with a dark spine anteromedially (sometimes only short hairs present). The m.a. on ST8 is an elongated ellipse (either as a depression or as a keel). Surstyli subsymmetrical with an appendage each on the side. 10–12 small spines at the base of both SS (or SES); phallic guide pointed, laterally bent towards SS with 4 rather thick hairs in the middle (two on both sides).

Type material: South Africa: 1♂, HT, Port St. John, Pondoland , 16–28.iv.1924., S.Africa, R.E. Turner, Brit. Mus., 1924-235. ( BMNH) . Democratic Republic of Congo: 1♂ [HT of E. apiculatus, no head], Congo Belge, P.N.G., Miss[ion] H. De Saeger, Pidigala, 23-iv-1952, H. De Saeger 3358., coll. Mus. Congo (ex. coll. I.P.N.C.B.) ; 1♂ [HT of E. dorsalis ], Congo belge: Kiwu Rutshuru (riv. Musugereza), 1100 m, 8-vii-1935, G.F. de Witte: 1628 ; 1♀ [AT of E. dorsalis ], ibid., 10-vii-1935, No. 1634 ; 1♀ [PT of E. dorsalis ], ibid. as AT, No. 1633 ; 1♀ [PT of E. dorsalis ], Congo belge: P.N.A., Escarpem [ent (=slope)] de Kabasha, 1500 m, 14-xii-1934, G.F. de Witte: 919 (all MRAC) ; 1♂ [PT of E. dorsalis ], Congo belge: P.N.A., Kanyabayongo (Kabasha), 1760m, 11-xii-1934, G.F. de Witte: 904 ( USNM) .

Other material examined: Kenya: 1♂, Nairobi , 1600–1650 m, VII/85, NLH Krauss ( AMNH) ; 1♂, lake Nakuru, 5767 feet, 15–16.xii.1970, A.E Stubbs, B.M. 1972-211 ( BMNH) ; 1♂, 14–16 km S of Nakuru , 15.xii.1970, A.E Stubbs, B.M. 1972-211 ( HNHM) . Malawi: 1♂, SE1133DD, Viphia, Chikangawa , 27.-ii.-1.iii.1987, J&A Londt, Grassland & forest margins ( NMSA) . South Africa: 1♂, Cape Prov, Alexandria For. Res. , 3326DA, 28.xii.1985, J & B Londt, Forest & forest margins ; 1♂, Ndumu Reserve, Ingwavuma District, Tongaland , S. Africa , B. & P. Stuckenberg, 1–10 December 1963 ; 1♂, Natal, Giant’s Castle Game Res. - Injasuti area, SE2929AB, JGH Londt 5- 11.xii.1983 ; 1♂, N Province #45, Legalameetse Nature Res., 24º09’S: 30º19’E, Date: 18.xi.1997, Coll: Barraclough & James Forest margin on road ; 1♂, Natal St. Lucia Nature Res. , 2832AD, 18–20.xii.1981, Londt & Stuckenberg, Coastal bush & forest ; 1♂, Natal, Cathedral Peak area, Forest Reserve , 2829 Cc, J.G.H. Londt , Date 5–6.ii.1983, ex Malaise ; 1♂, Natal, Pietermaritzburg, Otto’s Bluff , ME Irwin: (2930 Cb ), 6 Feb 1972 ; 1♂, Natal Prov., Richmond Dist. Pateni, 30º09’E., 29º56’S.(2930 Cc ), Nov.18, 1971; temp. forest, BE Stuckenberg & ME Irwin ; 1♂, Transvaal , 8 km NW Barberton on Badplass Rd SE2530DD, 6–8.iv.1985 J. Londt, Bushveld long grass ; 1♂, Houtbosloop River, near Rivulets, Transvaal , Nelspruit Dist. 2530BC, 6 Nov. 70, Stuckenberg Gallery Forest ; 1♂, Giants Castle Res. Natal Drakensberg, S. Africa , 5800 ft, B. & P. Stuckenberg, 18–23 Sept. 1903 [3 handwritten] ; 1♂, Geekie’s farm, 1500m, 4.1.1961, Karkloof range nr. mt Alida natal, S. Africa, B. & P. Stuckenberg (all NMSA) ; 5♂, KZ-Natal #117, Hluhluwe / Umfolozi Res., 28º09’S: 32º02’E, 160m, Date : 29.xii.1995 – 3.i.1996, Coll: J. Londt & K. Cradock, Munyawaneni Camp area (3 NMSA, 2 HNHM) ; 1♂, Karkloof range nr. mt Alida natal, S. Africa, B. & P. Stuckenberg, 24.xii. 1961 ( HNHM) ; 1♂, Cape of Good Hope, Nature Reserve , III-7-10- 1968, Paul J. Spangler ; 1♂, Natal, Mtubatuba , III-24&25-1968, Paul J. Spangler (both USNM) ; 1♂, C.P. 9mi. NE Wellington , III-4&5-1968, Paul Spangler ( HNHM) . Swaziland: 2♂, #45, 13 km N. of Ngogolo, 26º19’S: 31º38’E, 300m, Date 22–24. iv.1991, J Londt & L Schoeman, Panata Ranch / Bushveld ( NMSA, HNHM) . Tanzania: 1♂, East Usambara, Amani , 1000 m, 06.02.1977, H. Enghoff, O. Lomholdt, O. Martin leg. ; 1♂, same data, 7.02 .; 1♂, same data, 21.01. (all ZMUC) . Uganda: 1♂, Ankole Dist., Kalinzu Forest , 6- 16.02.1973, H Gønget leg ( ZMUC) ; 1♂, Budongo Forest , 7–8.ii.1935., F.W. Edwards, B.M. 1935–203 ( BMNH) .

Male

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

Thorax. Humeri pale brown. Mesonotum (viewed obliquely from front) with brownish pollinosity, with two silvery triangles along anterior margin; mostly black from the side with faint greyish-brown pollinosity. Scutellum brownish pollinose, 7–12 pairs of distinct pale hairs. Dorsocentral hairs weakly developed. Halter: base of stem and knob brown, stem otherwise pale brown.

Legs. Trochanters and femora brown-black with greyish pollinosity except for ventrobasal surface of f3, knees yellow, tibiae yellow-brown on basal 1/3, otherwise dark brown. Tarsal segments brown to dark brown (yellowbrown in original description of E. apiculatus ), last segment black. Ventroapical row of 3–6 short black spines on first four femora; 2–4 short black spines on 3rd femur. Subapical (distal) spines on first four tibiae present. One dark spine anteromedially on 3rd tibia (sometimes only short hairs present), and usually first four tibiae with a similar spine as well. Hind trochanter covered with minute white hairs on ventral side. Pulvilli equal to distinctly shorter than last tarsal segment.

Wing. Fourth costal section 0.5 times as long as third costal section. Cross-vein R-M at 1/3 of discal cell. Pterostigma fully coloured. Four weak hairs on tegula.

Abdomen. Viewed obliquely from front tergites subshining black, hind margins: distal half of T2–4 and 2/3 of T5 and sides of tergites brownish pollinose. Hairs dispersed, short and weakly developed. Three dark lateral spines on first tergite. Postabdomen in dorsal view: T5 equally long as ST8. Genitalia without dissection: edge of S7 visible, T5 slightly longer than ST8, which is subshining black, m.a. elongated ellipse (either retracted, then as a depression, or blown up, then as a keel), SS pale or yellowish-brown.

Genitalia. Surstyli subsymmetrical with an appendage each on the side ( Fig. 8B ). SES not clear, 10–12 small spines at the base of both SS; gonopods subsymmetrical; hypandrium not connected to EP; phallic guide pointed, laterally bent towards SS with 4 rather thick hairs in the middle (two on both sides); phallus trifid (short in Fig. 8A , but usually reaches well over SS), laterally one of the tubes is slightly longer (probably only on the specimen drawn); ejaculatory apodeme funnel-shaped; sperm pump roundish, also funnel-like ( Fig. 8E ).

Female (based on E. dorsalis, AT )

As male except for the following characters. Third antennal segment long acuminate. Frons, eyes separated; silvergrey pollinose on lower 1/8, another 1/8 only greyish on sides and all the rest is shining black. Pulvilli and claws on first leg about 2 times as long as last tarsal segment. Third tibia with an erect black spine. Pterostigma fully coloured, but pale. T2 completely greyish, sides of abdomen with grey patches. Female ovipositor as in Figs 40V– W .

Distribution— Democratic Republic of Congo, Kenya, Madagascar, Malawi, South Africa, Swaziland, Tanzania, Uganda.

Figures

FIGURE 8. Male genitalia of Dasydorylas evanidus (A–F) and D. minymerus (G–L).—A: outer surstylus with phallic guide, phallus 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 (without ST8), G: outer surstylus with phallic guide and outer gonopod, lateral view, H: dorsal view, I: inner surstylus, lateral view, J: surstyli, dorsal view, K: sperm pump with ejaculatory apodeme, L: ventral view with phallic guide and phallus (without ST8). 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