Euscelidia cacula, Dikow, 2003

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 40-41

Euscelidia cacula sp. n.

Figs 17E–H , 46

Etymology: Noun in apposition that refers to the type locality Cacula, Angola.

Diagnosis: The species is distinguished from congeners by the predominantly apruinose sct, many yellow setae arranged laterally on sct, and the densely arranged microtrichia on the wings.

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

Thorax: Black; ppro peg large, yellow pruinose; sct apruinose, margins yellow pruinose, yellow setae on margins, few short dc setae may be present, macrosetae: 1 white npl s, 1 black spal s; sctl white pruinose, ds sctl s and sctl s long, yellow; Legs - yellow to brown; pro fem light brown, meso fem light brown, brown dorsally, meta fem yellow proximally, remaining part light brown to brown dorsally, light brown ventrally, slightly clubbed, short white setae on club; pro tib light brown, yellow stripe anteriorly, meso and meta tib brown, yellow stripe not reaching tip on meta tib anteriorly; first tar yellow proximally, brown distad, black setae; emp about a third of length of clw; Wings - densely covered with microtrichia; ptero indistinct, brown; cell d terminating in 2 veins; hlt orange.

Abdomen: Black; T grey pruinose, distal T more extensively brown pruinose, T1 with long yellow setae, T 2 in proximal 2/3 with yellow setae laterally, remaining T with short white and yellow setae, S grey pruinose; ơ terminalia Figs 17E–H - sur pointed distally, lobe ventrally; hypd ventral margin straight; d aed shea tubular, terminating in a dorsad directed structure; lat apod bifurcated.

Type material - The ơ holotype is labelled ‘ ANGOLA (A20) 10 mls [16 km], NE. Cacula 5.iii.1972 (‘ ANGOLA (A20)’ blue underlined) / Southern Africa Exp. B.M. 1972-1 / Euscelidia ? sp. nov. det. H. Oldroyd 1973 (handwritten except for ‘det. H. Oldroyd 19') / HOLOTYPE Euscelidia cacula sp. nov. T. Dikow 2001 (red label)’. The specimen is double mounted (minuten in block of foam), is in very good condition (right pped broken; ơ terminalia attached to specimens pin in micro vial), and is deposited in the BMNH.

A paratype of undeterminable gender with the same locality data and ‘ PARATYPE Euscelidia cacula sp. nov. T. Dikow 2001 (yellow label)’ is double mounted (minuten in block of foam), is in poor condition (antennae, left meta leg, wings, and abdomen broken), and is deposited in the BMNH . A ^ paratype is labelled ‘ ANGOLA (A17) 15 mls [24 km]. N. Sa da Bandeira , c. 6500 ft. [1950 m] 3.iii.1972 (‘ ANGOLA (A17)’ blue underlined) / Southern Africa Exp. B.M. 1972-1 / PARATYPE Euscelidia cacula sp. nov. T. Dikow 2001 (yellow label)’. The specimen is double mounted (minuten in block of foam), is in very good condition (pro and meso tarsi broken), and is deposited in the BMNH . Another ^ paratype is labelled ‘ ANGOLA (A22) Nova Lisboa 5–7.iii.1972 (‘ ANGOLA (A22)’ blue underlined) / Southern Africa Exp. B.M. 1972-1 / PARATYPE Euscelidia cacula sp. nov. T. Dikow 2001 (yellow label)’. The specimen is double mounted (minuten in block of foam), is in excellent condition, and is deposited in the BMNH .

Type locality and distribution (Fig. 46): Angola, Cacula , 14 29'S 14 06' E . Angola.

Figures

Fig. 17. ơ terminalia. A–D. Euscelidia bishariensis. A. Dorsal. B. Ventral. C. Lateral. D. Aedeagus lateral. E–H. E. cacula sp. n. E. Aedeagus lateral. F. Dorsal. G. Ventral. H. Lateral. Scale line = 1 mm.