Euscelidia bequaerti Janssens, 1957

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 22-24

Euscelidia bequaerti Janssens, 1957

Figs 5D–F , 7C , 13F–K , 16

Euscelidia bequaerti Janssens, 1957: 5 ; Oldroyd 1980: 356.

Diagnosis: The species is distinguished from congeners by the predominantly apruinose sct, the few microtrichia on the wings, and the apruinose proximal margins of the T2– 4.

Redescription: Head: Black; fc silver pruinose, fc gib indistinct, mystax white, 8–12 macrosetae; oc tr apruinose; occ silver pruinose, setae white; Antennae - scp and ped brown, setae brown; pped brown, white pruinose; apsel brown; Thorax: Black; sct black, sometimes 2 slightly red spots antero-laterally, predominantly apruinose, anterior, lateral, and posterior margins silver pruinose, white setae on pruinose area and few yellow setae scattered on apruinose part, presut dc setae sometimes distinct; macrosetae: white or black, 1 npl s, 1 spal s; sctl silver pruinose, ds sctl s and sctl s long, white; Legs - yellow to brown; pro and meso fem light brown, meta fem pale yellow proximally, clubbed, club brown, light brown distally; tib brown, pale yellow stripe not reaching tip on meta tib anteriorly; emp minute (holotype with short emp); Wings - hyaline, few microtrichia scattered on remigium and margins, slightly brown stained; ptero distinct, brown; cell d terminating in 2 veins; hlt yellow; Abdomen: Black; predominantly brown pruinose, anterior and posterior margins narrowly grey pruinose,T 2–4 in proximal half apruinose,T1 with long brown setae laterally, T 2 in proximal half with white setae laterally, remaining T with white and brown setae, S grey pruinose, S 2 in proximal half apruinose; ơ terminalia Figs 13F–K - sur pointed distally, lobe dorsally and ventrally; hypd bent upwards, enlarged distally; d aed shea short, blunt, lat pr aed short; lat apod simple.

Type material - The holotype of undeterminable gender is labelled ‘Elisabethville Congo Belge M. Bequaert 2-XII-1934 (date handwritten) / R.I.Sc.N.B. 24.236 Coll. M. Bequaert / E. Janssens det., 1956 Euscelidia Becquaerti n. sp. (letter ‘c’ in ‘ Becquaerti’ crossed out, handwritten except for ‘E. Janssens det., 195’) / HOLOTYPE Euscelidia bequaerti Janssens, 1957 by T. Dikow 2001 (red label)’. The specimen is directly mounted, is in poor condition (head broken (attached to label), antenna, meta legs, and abdomen broken), and is deposited in the ISNB.

Type locality and distribution ( Fig. 16 ): DR Congo , Lubumbashi (former Elisabethville), 1139'S 27 28'E. Cameroon, DR Congo, Ivory Coast, Mali, Malawi .

Material examined: CAMEROON: 2^^ Bossoum , 956'N 13 41'E, 1–10.vi.1914 ; IVORY COAST: 1^ 2ơơ 1? Comoe National Park, Kakpin Camp , 840'N 3 12'W, 16–18.iv.1989 ; MALAWI: 3^^ Chikangawa , 1149'S 33 47'E, 27.ii.–1.iii.1987 ; MALI: 1ơ Segou , 1326'N 615'W, 31.vii.1991 . Depository : NMSA; ZMHB .

Figures

Fig. 5. Aedeagi. A, B, C. Euscelidia natalensis sp. n. A. Lateral. B. Ventral. C. Dorsal. D, E, F. E. bequaerti. D. Anterior. E. Lateral. F. Dorsal. Scale lines = 100 m.

Fig. 7. Surstyli lateral. A. Euscelidia pallasii. B. E. natalensis sp. n. C. E. bequaerti. D. E. acuminata sp. n. E. E. splendida sp. n. F. E. longibifida sp. n. Scale lines = 100 m.

Fig. 13. ơ terminalia. A–E. Euscelidia bechuana sp. n. A. Dorsal. B. Ventral. C. Lateral. D. Hypandrium posterior. E. Aedeagus lateral. F–K. E. bequaerti. F. Hypandrium posterior. G. Aedeagus lateral. H. Dorsal. I. Ventral. K. Lateral. Scale lines = 1 mm.

Fig. 16. Distribution. Euscelidia anthrax, triangles; E. bequaerti, circles; E. bicolor, squares; E. bishariensis, stars; E. discors, pentagon; E. fastigium, hexagon.