Scathophaga pictipennis ( Oldenberg, 1923 )

Ozerov, A. L. & Krivosheina, M. G., 2021, A review of the genus Scathophaga Meigen, 1803 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 30 (2), pp. 201-246 : 233-234

Scathophaga pictipennis ( Oldenberg, 1923)

Figs 36, 109–111.

pictipennis Oldenberg, 1923: 307 ( Scatophaga ). Type-locality: Gastein valley ( Austria).

maculipenne Ringdahl, 1936: 175 ( Scopeuma ). Type-locality: “bei Idre im nördlichen Dalarna ” ( Sweden).

REMARK. The species is known for certain in Russia from the territory of Karelia only [ Humala, Polevoi, 2009: 72].

MATERIAL EXAMINED. Karelia: Kivach Nature Reserve (62.267ºN 33.980ºE), 31. V . and 5–8. VI.1989, A. V. Polevoy (1 ♂, 1 ♀, ZMUM) .

DESCRIPTION. Male. Female. Length of body 4.5– 5.6 mm.

Head. Frontal vitta yellow, with delicate whitish reflection; fronto-orbital plate blackish, greyish dust- ed. Face and gena yellow, with whitish reflection. Postcranium black in upper half and yellow in lower half. 3 orbital and 3–4 frontal setae present. Scapus and pedicel dark reddish. Postpedicel black, about twice as long as wide. Arista bare. Palpus yellow.

Thorax black, dense pale grey dusted, only postpronotal lobe yellowish. Acrostichals setulose in two rows, dorsocentrals 2+3, intra-alars 1+2, supra-alars 1+2, postpronotals 2. Anepimeron bare. Scutellum greyish dusted, with a pair of strong basal scutellar and a pair of strong apical scutellar setae.

Legs. Fore coxa yellow, mid and hind coxae brownish or blackish. Fore femur black, except yellow apex, greyish dusted. Mid and hind femora, all tibiae and all tarsi yellow. Male fore femur covered with whitish and blackish hairs, without conspicuous setae. Female fore femur with a row of dorsal/posterodorsal setae. Fore tibia with 2–3 dorsal, 1 posterior, 1 preapical anterodorsal, 1 apical posterodorsal, 1 apical posterior setae. Mid femur with a row of anterodorsal setae, with 1 preapical posterodorsal and 1 preapical posterior setae. Mid tibia with 2 anterodorsal, 2 posterodorsal, 0–1 ventral setae, also with a ring of apicals. Hind femur with a row of dorsal/ anterodorsal setae. Hind tibia with 2–3 posterodorsal, 2–3 anterodorsal, 2–3 anteroventral, 1 preapical dorsal, 1 preapical anterodorsal, and 2 apical anteroventral setae.

Wing clear; crossveins r-m and d-m broadly darkened.

Abdomen brownish, greyish dusted. Male sternite 4 slightly wider than long (Fig. 36). Male sternite 5 with broad in base narrow apically lateral lobes and with deep and wide median cavity ( Fig. 109 ). Epandrium, cercal plate and surstyli as in Figs 110, 111 .

DISTRIBUTION. Russia: Karelia. — Europe, North America; extremely rare species.

Figures

Figs 106–114. Scathophaga obscurinervis (Becker) (106–108), S. pictipennis (Oldenberg) (109–111) and S. spurca (Meigen) (112– 114): 106, 109, 112 — male sternite 5; 107, 110, 113 — epandrium, cercal plate and surstyli, lateral view; 108, 111, 114 — same, dorsal view. 109–111 — after Ozerov, 2017, figs 4–6. Рис. 106–114. Scathophaga obscurinervis (Becker) (106–108), S. pictipennis (Oldenberg) (109–111) и S. spurca (Meigen) (112– 114): 106, 109, 112 — стернит 5 самца; 107, 110, 113 — Эпандрий, церки и сурстили, сбоку; 108, 111, 114 — то же, сверху. 109– 111 — по Ozerov, 2017, figs 4–6.