Euscelidia cana, Dikow, 2003

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 32-33

Euscelidia cana sp. n. ( E. brunnea species-group)

Figs 21G , 22

Etymology: Latin adjective canus = grey; refers to the distinct three grey pruinose stripes on the scutum.

Diagnosis: The species is distinguished from congeners by the two apruinose lateral bluish-black stripes on the sct and features of the ơ terminalia (d aed shea open, lat pr aed long).

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

Thorax: Black; ppro peg large, silver pruinose; sct bluish-black, yellow pruinose medially, lateral and posterior margins silver pruinose, 2 narrow median stripes, originating at anterior margin not reaching posterior margin, and 2 lateral stripes, not reaching anterior and posterior margins, apruinose, view short white setae on margins; macrosetae: white, 1 npl s, 1 spal s; mesopleura covered with dense white pruinosity, long white setae directing anteriorly on anepst and kepst; sctl silver pruinose, ds sctl s and sctl s very short, white; Legs - yellow to brown; pro fem yellow, meso and meta fem yellow proximally, remaining part brown, clubbed, club with brown stripe laterally, setae white; tib brown, pale yellow stripe not reaching tip on meta tib anteriorly; first tar pale yellow proximally, brown distad, remaining tar brown, black setae; emp minute; Wings - hyaline, but microtrichia scattered on remigium; ptero indistinguishable; cell d terminating in 2 veins; hlt light brown.

Abdomen: Black; T brown pruinose dorsally, grey pruinose laterally, T1 with long white setae laterally, white and brown setae on remaining T, S grey pruinose; ơ terminalia Fig. 21G - sur pointed distally, lobe ventrally; hypd bent upwards, divided into 2 lobes; d aed shea open, extending gonp, lat pr aed long; lat apod simple.

Type material - The ơ holotype is labelled ‘ South Africa Bloemfontein 20.xii.78 [20.xii.1978] J.G. Theron (locality and date handwritten) / HOLOTYPE Euscelidia cana sp. nov. det. T. Dikow 2001 (red label)’. The specimen is double mounted (minuten in rectangular piece of cardboard), is in very good condition (ơ terminalia attached to specimens pin in micro vial), and is deposited in the NMSA.

Type locality and distribution ( Fig. 22 ): South Africa, Free State Province , Bloemfontein, 29 07'S 26 11'E. South Africa .

Figures

Fig. 21. ơ terminalia. A–E. Euscelidia natalensis sp. n. A. Dorsal. B. Ventral. C. Lateral. D. Hypandrium posterior. E. Aedeagus lateral. F–I. Aegeagi lateral. F. E. brunnea. G. E. cana sp. n. H. E. capensis sp. n. I. E. vallis sp. n. Scale line = 1 mm.

Fig. 22. Distribution. Euscelidia cana sp. n., pentagon; E. natalensis sp. n., circles; E. notialis sp. n., squares; E. vallis sp. n., triangles; E. zumpti, star.