Euscelidia francoisi ( Janssens, 1953 ) Dikow, 2003

Dikow, Torsten, 2003, Revision of the genus Euscelidia Westwood, 1850 (Diptera: Asilidae: Leptogastrinae), African Invertebrates 44 (2), pp. 1-131 : 64-66

Euscelidia francoisi ( Janssens, 1953) , comb. n.

Figs 35 , 46

Dolichoscius francoisi Janssens, 1953: 2 ; Hull 1962: 318; Oldroyd 1980: 356.

Dolichoscius longipes Janssens, 1954 a: 120 ; Oldroyd 1980: 356. syn. n.

Diagnosis: The species is distinguished from congeners by the pale yellow wing veins C, Sc, and R 1, the narrow wing cell a 2, and the tuft of setae on the meta tib and tarsi.

Redescription: Head: Black; fc yellow pruinose, fc gib indistinct, mystax white, many macrosetae; oc tr silver pruinose dorsally; occ silver pruinose, setae white; Antennae - scp brown, brown 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 small, distinct, silver pruinose; sct predominantly apruinose, bluish-black, anterior, lateral, and posterior margins silver pruinose, long white setae on pruinose part, presut and psut dc setae long, macrosetae: white, 1 npl s, 1 spal s; sctl silver pruinose, ds sctl s and sctl s long, white; Legs - yellow to brown; pro fem light brown, meso fem light brown in proximal half, distal half brown, meta fem pale yellow proximally, clubbed, club brown; tib brown, yellow stripe not reaching tip anteriorly, distal half of meta tib and tar 1–4 with long brown setae laterally; emp minute; Wings - hyaline, very few microtrichia on remigium, veins yellow in proximal half of wing, brown distally, C, Sc, and R 1 completely pale yellow; ptero indistinct; cell d terminating in 3 veins; hlt yellow; Abdomen: Black; T predominantly brown pruinose, lateral margin grey pruinose, T1 with long white setae laterally, T 2 in proximal third with white setae laterally, remaining T with short yellow and brown setae, S grey pruinose; ơ terminalia Fig. 35 - sur pointed distally, lobe ventrally; hypd bent upwards, divided into 2 lobes; d aed shea tubular, medium length; lat apod simple.

A B C

D E

Type material - The ơ holotype of Dolichoscius francoisi is labelled ‘ Urundi: Terr. de Muhinga 11.V.1952 F.L. Francois (‘Muhinga’ and date handwritten) / Colline: Muhinga (Butezana) alt. 1700 m. (‘Muhinga’, ‘Butezana’, and ‘1700’ handwritten) / E. Janssens det., 1953 Dolichoscius Francoisi n. sp. (species name and ‘53’ handwritten) / TYPE (red label with black border around ‘TYPE’) / cf. Bull. Inst. Sc. Nat. Belg. XXIX, 1953, no 42 p. 2, figs. 1–2 (citation handwritten) / R. I. Sc. N. B. I. G. 20.102 (numbers handwritten) / Euscelidia francoisi ( Janssens, 1953) det. T. Dikow 2001’. The specimen is double mounted (minuten in block of foam), is in very good condition (right meta leg broken), and is deposited in the ISNB.

Two ^^ and one ơ paratypes have same collection details as holotype. The specimens are double mounted (minuten in block of foam), are in very good condition, and are deposited in the ISNB . Two ^^ paratypes are labelled ‘ Urundi: Terr.de Bururi 9.II.1952 F.J. Francois (‘Bururi’ and date handwritten) / Colline: Bururi (Burursi) alt. 1900 m. (‘Bururi’, ‘Burursi’, and ‘1900’ handwritten) / Paratype (red label with black border around ‘Paratype’) / Euscelidia francoisi ( Janssens, 1953) det. T. Dikow 2001’. The specimens are double mounted (minuten in block of foam), are in very good condition, and are deposited in the ISNB .

The holotype of undeterminable gender of Dolichoscius longipes is labelled ‘ HOLOTYPUS (red label with black submarginal border) / TYPE (red label, black border around ‘TYPE’) / CONGO belge: P.N.U. Mukana (1.810 m.) 14-IV-1947 Mis. G.F. de Witte. 275a / COLL. Mus. Tervuren (black border) / E. Janssens det., 1951 Dolichoscius longipes E. Janss. (handwritten except for ‘E. Janssens det., 19’) / Euscelidia francoisi ( Janssens, 1953) det. T. Dikow 2001’. The specimen is double mounted (minuten in block of foam), is in poor condition (right pped, right pro tib, right meso tarsus, left meta leg, and abdomen from fourth segment broken), and is deposited in the MRAC.

Type locality and distribution (Fig. 46): Burundi, Muhinga, 2 50'S 30 20'E. Burundi, DR Congo, Mozambique, Rwanda .

Material examined: DR CONGO: 1? Mukana , 9 15'S 2712'E, 14.iv.1947 ; 1 ^ Kasende , vii.1934 ; MOZAMBIQUE: 1^ Maputo, 2557'S 32 34'E, iv.–vii.1914 ; RWANDA: 2ơơ Kibungu , 210'S 30 32'E, 2.ii.1953 . Depository : BMNH, ISNB, MRAC .

Figures

Fig. 35. ơ terminalia of Euscelidia francoisi. A. Dorsal. B. Ventral. C. Lateral. D. Hypandrium posterior. E. Aedeagus lateral. Scale line = 1 mm.