Stylogaster frontalis Kröber, 1914

Stuke, Jens-Hermann, 2012, A revision of Afrotropical species of Stylogaster Macquart (Diptera: Conopidae), with descriptions of twenty-one new species and an identification key, African Invertebrates 53 (1), pp. 267-267 : 292-293

Stylogaster frontalis Kröber, 1914

Figs 72–76

Stylogaster frontalis Kröber, 1914: 344 (Type locality: “ Congo Belge: P.N. A., Masif Ruwenzori”).

Literature: Camras (1962 a), Kröber (1914, 1919, 1936), Séguy (1946), Smith (1967).

The holotype of S. frontalis has been lost ( Smith 1967). The specimens here identified as S. frontalis conform to the original description perfectly and the collection locality is close to the locus typicus (“Belgischer Kongo, Elisabethville”).A neotype is designated here in accordance with Articles 75.3.4 and 75.1 of the ICZN (1999), in order to fix the identity of the species.

Neotype: ♂ DEMOCRATIC REPUBLIC OF THE CONGO: (1) “Congo Belge: P.N.A. / 12­II­1953 / P. Vanschuytbroek & / J. Kekenbosch 2624”; (2) “Masif Ruwenzori / Kalonge, 2.080 m / gîte Ruwenzori”; (3) “ Neotypus / Stylogaster / frontalis Kröber, 1914 / des. Stuke 2011 ( MRAC)”. Right hind tarsi missing and several setae damaged, neotype otherwise in good condition.

Additional material examined: DEMOCRATIC REPUBLIC OF THE CONGO: 1♂ same data as neotype ; 1♂ Massif Ruwenzori , Camp des Gardes, Kyandolire, 1700 m, 7–15 x.1952, P.Vanschuytbroek & J. Kekenbosch (1275–84) ; 1♂ Massif Ruwenzori , Kalonge, gîte Ruwenzori, 2085 m, 16.iii.1957, P. Vanschuytbroek (VS 919) ; 1♂ Massif Ruwenzori , Kalanġe, 2210 m, 27.viii.1952, P. Vanschuytbroek & J. Kekenbosch (955) (all MRAC & J­HS) ; 1♂ “ Tshiefu ”, 05°34'S 23°38'E, 23.ii.1974, R. Bauer ( BMNH) .

Distribution: Based on the locus typicus of Kröber and the material examined here, S. frontalis is confined to Ruwenzori Massif. Additional records of this species are reported from Liberia and Uganda by Camras (1962 a), but Smith (1967) checked the female specimens from Uganda and found those to be closer to S. varifrons Malloch. The record from Liberia by Smith (1967) is based on a female and the identification remains doubtful. Currently, the known distribution of S. frontalis is therefore limited to the Democratic Republic of the Congo.

Figures

Figs 72–76. Terminalia (♂) of Stylogaster frontalis Kröber (Democratic Republic of the Congo, Massif Ruwenzori): (72) surstylus, lateral view; (73) same, dorsolateral view; (74) phallus sheath of hypandrium, lateral view; (75) cercus, lateral view; (76) sperm pump and ejaculatory apodeme. Abbreviations: ce – cercus; su – surstylus. Not to scale.