Euscelidia adusta, Dikow, 2003

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 18-20

Euscelidia adusta sp. n.

Figs 12A–D , 59

Etymology: Latin adjective adustus = brown, tanned; refers to the overall brown coloration of the species.

Diagnosis: The species is distinguished from congeners by the overall brown coloration, the light brown pruinose sct, and the few microtrichia on the wings.

Description: Head: Dark brown; fc silver pruinose, fc gib indistinct, mystax white, 7 to 8 macrosetae; prob and plp brown, setae white; oc tr white pruinose dorsally; occ silver pruinose, setae white and brown; Antennae - scp brown, brown setae ventrally, white pruinose; ped brown, brown setae ventrally and dorsally, white pruinose; pped brown, white pruinose proximally and ventrally; apsel brown.

Thorax: Brown; ppro peg small, distinct, silver pruinose; sct predominantly pruinose, holotype with 2 narrow longitudinal stripes, reaching anterior margin, apruinose, only right hand side with large antero-lateral apruinose spot, paratype without apruinose stripes and with 2 apruinose spots posterior to trn sut; macrosetae: brown, 1 npl s, 1 spal s; sctl silver pruinose, ds sctl s and sctl s long, white; Legs - yellow to brown; fem light brown, except for proximal and distal tip, which is pale yellow, meta fem slightly clubbed; tib light brown, pale yellow stripe not reaching tip anteriorly; first tar on pro and meso leg yellow, brown distad, remaining tar brown, all tar brown on meta leg, setae black; emp minute; Wings - hyaline, veins brown; ptero distinct, brown; cell d terminating in 2 veins; hlt light brown.

Abdomen: Brown; T grey pruinose, T2 with apruinose spot anteriorly, T1 with long white setae laterally, T 2 in proximal half with white setae laterally,

A B C

D E

F G H

remaining T with short white and yellow setae, S grey pruinose; ơ terminalia Figs 12A–D - sur pointed distally, lobe dorsally and ventrally, dorsal lobe large; hypd ventral margin straight, d aed shea tubular, medium length; lat apod simple.

Type material - The ơ holotype is labelled ‘2/12 95 [2.xii.1895] / N. Kamerun [northern Cameroon] Johann-Albrechtshöhe L. Conradt 88 (blue label) / HOLOTYPE Euscelidia adusta sp. nov. det. T. Dikow 2001 (red label)’. The specimen is directly mounted, is in very good condition (right pped broken; ơ terminalia attached to specimens pin in micro vial), and is deposited in the ZMHB.

The ơ paratype is labelled ‘ Uganda. District Masindi Budongo Forest n. Sonso 1 45'N, 31 35'E 19.-30.VI.95 [1995] Th. Wagner leg. / PARATYPE Euscelidia adusta sp. nov. det. T. Dikow 2002 (yellow label)’. The specimen is directly mounted, is in excellent condition, and is deposited in the NMSA .

Type locality and distribution ( Fig. 59 ): Cameroon , Johann-Albrechtshöhe, no co-ordinates available. Cameroon, Uganda.

Remarks: I examined a single ^ specimen from Vumba, Zimbabwe, that is very similar to the male specimens, but has a number of conflicting features (emp about a quarter of length of clw, wing tip with many microtrichia). Because of these differences, the female gender, and the geographic distance between the distribution of the male specimens and Zimbabwe I am not certain about the status of this specimen. I will only provide the label data: 1^ Zimbabwe, Vumba [19 04'S 32 45'E], 11.xi.1965, D. Cookson (NMSA).

Figures

Fig. 12. ơ terminalia.A–D. Euscelidia adusta sp. n.A. Dorsal. B. Ventral. C. Lateral. D. Aedeagus lateral. E–H. E. anthrax. E. Aedeagus lateral. F. Dorsal. G. Ventral. H. Lateral. Scale line = 1 mm.

Fig. 59. Distribution. Euscelidia adusta sp. n., triangle; E. atrata sp. n., star; E. picta sp. n., hexagon; E. pulchra sp. n., circles.