Euscelidia crena, Dikow, 2003

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 43-44

Euscelidia crena sp. n.

Figs 24E–I , 29

Etymology: Latin noun crena = rounded projection; refers to the well-developed facial swelling.

Diagnosis: The species is distinguished from congeners by the distinct facial swelling, three apruinose spots on the lateral sct, and features of the ơ terminalia (gonst large, lat apod triangular, d aed shea tubular).

Description: Head: Black; fc silver pruinose, fc gib distinct, mystax white, 12 macrosetae; prob and plp brownish-black, setae white; oc tr white pruinose dorsally; occ silver pruinose, setae white; Antennae - scp brown, white setae ventrally; ped brown, brown setae ventrally and dorsally, white pruinose; pped light brown proximally, brown distad, white pruinose; apsel hyaline.

Thorax: Dark brown; ppro peg small, distinct, silver pruinose; sct black (^ paratype with orange anterior and lateral margins), yellow pruinose medially, margins silver pruinose, 2 antero-lateral spots apruinose, 2 lateral spots anterior and posterior to trn sut apruinose, but not as distinct as antero-lateral spots, few yellow or white setae on margins; macrosetae: white, 1 npl s, 1 spal s; sctl silver pruinose, ds sctl s and sctl s short, white; Legs - yellow to brown; pro and meso fem yellow, meta fem pale yellow in proximal half, clubbed, club light brown, setae white; pro and meso tib light brown, pale yellow stripe anteriorly, meta tib brown, pale yellow stripe in proximal half anteriorly; tar light brown to brown, black setae; emp long, about a quarter of length of clw; Wings - hyaline, few microtrichia scattered on remigium and distal margin; ptero distinct, light brown; cell d terminating in 3 veins; hlt light brown.

Abdomen: Dark brown; T predominantly brown pruinose, anterior, lateral, and posterior margins grey pruinose, T1 with long white setae laterally, T 2 in proximal third with few white setae laterally, remaining T with white and yellow setae, S grey pruinose; ơ terminalia Figs 24E–I - sur pointed distally, lobe ventrally; hypd ventral margin straight; gonst large; d aed shea tubular; aed apod small; lat apod triangular.

Type material - The ơ holotype is labelled ‘ KENYA: Machakos #88 17 km SE Sultan Hamud 0204'S: 37 28'E 1140 m Date : 30.xi.1992 J Londt & A Whittington Grassland & road verges / HOLOTYPE Euscelidia crena sp. nov. det. T. Dikow 2001 (red label)’. The specimen is double mounted (minuten in block of foam), is in excellent condition (ơ terminalia attached to specimens pin in micro vial), and is deposited in the NMSA.

The ^ paratype has same labels as holotype except ‘ PARATYPE Euscelidia crena sp. nov. det. T. Dikow 2001 (yellow label)’. The specimen is double mounted (minuten in block of foam), is in excellent condition, and is deposited in the NMSA .

Type locality and distribution (Fig. 29): Kenya , Sultan Hamud (17 km SE), 204'S 3728'E. Kenya .

Figures

Fig. 24. ơ terminalia. A–D. Euscelidia cobice sp. n. A. Dorsal. B. Ventral. C. Lateral. D.Aedeagus lateral. E–I. E. crena sp. n. E. Aedeagus lateral. F. Lateral apodeme posterior. G. Dorsal. H. Ventral. I. Lateral. Scale lines = 1 mm.