Scatomyza gobaensis Ozerov et Krivosheina, 2024

Ozerov, A. L. & Krivosheina, M. G., 2024, A new species of Scatomyza Fallén, 1810 (Diptera: Scathophagidae) from Ethiopia, Russian Entomological Journal 33 (1), pp. 136-138 : 136-138

Scatomyza gobaensis Ozerov et Krivosheina sp.n.

Figs 1–5 .

MATERIAL. Holotype ♂, Ethiopia, Goba env., 3070 m (6.933ºN 39.95ºE), 7.XII.2023, coll. N. Vikhrev.

DESCRIPTION. Male (holotype). Head. Frontal vitta yellow reddish in lower half and black in upper part; face, parafacial and gena yellow, whitish dust- ed; fronto-orbital plate, ocellar triangle and postcranium blackish, greyish dusted. Setae: 3 orbitals, 4–5 frontals, 1 ocellar, 1 postocellar, 1 inner vertical, 1 outer vertical; 1 pair of strong vibrissae and 2 pairs of subvibrissae present. Postcranium covered with white hairs. Antenna black; postpedicel about 2.5 as long as wide; arista with more or less long dorsal and ventral branches in basal half. Palpus yellow, filiform.

Thorax completely black, grey dusted, with dark stripes and fuzzy spots on scutum.Acrostichals not differentiated from the other hairs on scutum, 2 postpronotals, 2 notopleurals, 1+2 supra-alars, 0+2 intra-alars, 2 postalars, and 2+3 dorsocentrals. Proepisternum centrally covered with whitish hairs, without strong setae ventrally. Proepimeron covered with whitish hairs anteriorly. Anepisternum covered with hairs completely and with 2 strong setae along posterior margin. Katepisternum covered with hairs completely, with one strong seta in posterodorsal corner. Postmetacoxal bridge present. Scutellum greyish dusted, with a pair of strong basal scutellar and a pair of strong apical scutellar setae.

Legs. All coxae black, greyish dusted. All femora black except yellowish apexes, greyish dusted. All tibiae and tarsi yellow. Fore femur covered with whitish and blackish hairs, and with a row of dorsal setae. Fore tibia with a row of posterodorsal setae, with 2 dorsal, 1–2 posterior, 1 preapical anterodorsal, 1 apical posterodorsal, 1 apical posterior setae. Mid femur with a row of apical setae, 1 preapical posterodorsal and 1 preapical posterior setae. Mid tibia with 3 anterodorsal, 3–4 posterodorsal, 1 posterior and 1 ventral setae in apical third, also with a ring of apicals. Hind femur with a row of dorsal/ anterodorsal setae and 1 preapical posterior seta. Hind tibia with 1 dorsal seta at middle, 3 posterodorsal, 3 anterodorsal, 1 preapical dorsal, 1 preapical anterodorsal, and 1 apical anteroventral setae.

Wing tinged with slightly brownish, veins brownish. Calypters, including margins, yellowish. Halter yellow.

Abdomen black, greyish dusted, tergites 2–6 each with a lateral marginal seta. Male sternite 4 oval, about 1.5 times as long as wide ( Fig. 1 ). Male sternite 5 with moderately long lateral lobes, curved like propeller in apical half and with short median lobes ( Fig. 1 ). Cercal plate as in Figs 3–5 ; surstylus with a long process near base ( Fig. 3 ). Aedeagus laterally as in Fig. 2 .

MEASUREMENTS. Length of body 6.8 mm. Length of wing 6.5 mm.

FEMALE. Unknown.

DISTRIBUTION. Ethiopia.

ETYMOLOGY. The species is named for the city of origin.

COMPARISONS.The five species, all of them from the genus Scathophaga Meigen, 1803 were known from Afrotropical Region. The presence of postmetacoxal bridge distinguishes the genus Scatomyza and the new species, described above, from all other known Afrotropical species of Scathophagidae .

The new species has original male sternite 5, lateral lobes of which are curved like propeller in apical half and it differs by this character from other representatives of the genus Scatomyza .

Acknowledgements. We are very grateful to Dr. Nikita Vikhrev (ZMUM) for the Ethiopian material of Scatomyza for study. The investigation was fulfilled within the state project of the Institute of the Ecology and Evolution RAS (M.G. Krivosheina) and the research project of MSU Zoological Museum No 121032300105-0 (A.L. Ozerov).

Figures

Figs 1–5. Scatomyza gobaensis, sp.n., male: 1 — abdominal sternites 4 (lower) and 5 (upper); 2 — aedeagus; 3 — epandrium, cercal plate and surstyli, dorsolateral view; 4 — same, dorsal view; 5 — same, lateral view. Рис. 1–5. Scatomyza gobaensis, sp.n., самец: 1 — стерниты брюшка 4 (вниЗу) и 5 (вверху); 2 — Эдеагус; 3 — Эпандрий, церкальнаЯ пластинка и сурстили, дорсолатерально; 4 — то же, сверху; 5 — то же, сбоку.