Euscelidia trifoliata Janssens, 1953

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 111

Euscelidia trifoliata Janssens, 1953

Figs 29, 63

Euscelidia trifoliata Janssens, 1953: 4 ; Oldroyd 1980: 357.

Diagnosis: The species is distinguished from congeners by the three brown longitudinal stripes on the sct and features of the ơ terminalia.

Redescription: Head: Black; fc silver pruinose, fc gib indistinct, mystax white, few macrosetae; oc tr apruinose; occ silver pruinose, setae white and brown; Antennae - scp and ped light brown, setae brown, white pruinose; pped brown, white pruinose proximally; apsel brown; Thorax: Orange to brown; sct orange, 3 longitudinal stripes, median stripe not reaching posterior margin, lateral stripes originating medially, stripes fused distad, brown, margins silver pruinose, white setae on pruinose area, some white setae scattered on surface, macrosetae: white or brown, 1 npl s, 1 spal s, 1 pal s; sctl silver pruinose, ds sctl s and sctl s long, white or brown; Legs - yellow and light brown; fem brown, meta fem pale yellow proximally, clubbed; tib brown, yellow stripe, not reaching tip on meta tib, anteriorly; emp long, nearly a quarter of length of a clw; Wings - hyaline; ptero distinct, brown; cell d terminating in 2 veins; hlt yellow; Abdomen: Brown; T predominantly brown pruinose, anterior, lateral, and posterior margins grey pruinose, T2 apruinose proximally, T1 with black setae, T2 with white long setae laterally, remaining T with short white setae, S grey pruinose; ơ terminalia Fig. 63 - sur pointed distally, lobe dorsally and ventrally; hypd ventral margin straight; (details of the aedeagus have not been studied).

Type material - The ơ holotype is labelled ‘ Urundi: Rumonge 17-IV-1949 780 m. F. Francois (date handwritten) / E. Janssens det., 1953 Euscelidia trifoliata n. sp. (handwritten except for ‘ E. Janssens det., 19’) / TYPE (red label with black margin around ‘TYPE’) / cf. Bull. Sc. Nat. Belg. XXIX, 1953, no 42 p. 4, fig. 3 (‘XXIX, 1953, no 42 p. 4, fig. 3’ handwritten) / R. I. Sc. N. B. I. G. 20.102 (number handwritten)’. The specimen is double mounted (minuten in block of foam), is in poor condition (antennae, all right legs, and left wing broken; right wing and abdomen attached to foam block), and is deposited in the ISNB .

Type locality and distribution (Fig. 29): Burundi , Rumonge, 3 58'S 29 26'E. Burundi, Malawi .

Material examined: MALAWI: 1^ Chikangawa, 1133 Dd, 1700 m, 5–8.xii.1980. Depository: NMSA .

A B C

Figures

Fig. 63. ơ terminalia of Euscelidia trifoliata. A. Dorsal. B. Ventral. C. Lateral. (aedeagus not examined) Scale line = 1 mm.