Scathophaga exalata Ozerov, 1996

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 : 212-213

Scathophaga exalata Ozerov, 1996

Figs 7 , 21, 64–66.

exalata Ozerov, 1996: 2 ( Scathophaga ). Type-locality: Raikoke I. (48º17´86´´N, 153º15´64´´E) ( Russia: Kuril Islands).

REMARK. This species known from Kuril Islands only (Raikoke I., Chirinkotan I., Ekarma I., Yankicha I.) [ Ozerov, 1996: 2].

MATERIAL EXAMINED. Sakhalin Oblast: Yankicha I. (47.517ºN 152.811ºE), 16.VII.1958, Violovich (1 ♂, 1 ♀, ZISP). See also Ozerov [1996: 2] .

DESCRIPTION. Male. Female. Length of body 6.5– 12.0 mm.

Thorax, abdomen and legs of males covered with dense, long, brown hairs. Females has hairs less dense and shorter.

Head. Frontal vitta reddish-orange, with delicate whitish reflection; fronto-orbital plate black, greyish dusted. Face and gena reddish-orange, with whitish reflection. Postcranium black. 3 orbital and 5–7 frontal setae present. Scapus and pedicel from dark reddish to black. Postpedicel black, about twice as long as wide. Arista bare. Palpus yellow.

Thorax black, densely grey dusted. Scutum chaetotaxy better seen in females: acrostichals setulose in two rows, dorsocentrals 2+2, 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 apical scutellar setulae.

Legs brownish or blackish. Legs of male covered with dense, long hairs; female legs with less dense and shorter hairs. Femora of all legs of both sexes without conspicuous setae. Male fore tibia with 2 very strong posteroventral setae in apical quarter. Female fore tibia with 2–3 dorsal, 2 posterior, 3–4 posteroventral setae (including apical seta). Male mid tibia with 1 anterodorsal, 2 anterior, 1 ventral setae, also with a ring of apicals. Female mid tibia with 3–4 anterior, 3 anterodorsal, 3 anteroventral, 2–3 posterodorsal, 2 posterior, 1 ventral setae, also with a ring of apicals. Male hind tibia with 1 preapical anterodorsal, 1 apical anterior, 1 apical anteroventral, 1 apical ventral setae. Female hind tibia with 3 posterodorsal, 4 anterodorsal, 1 preapical dorsal, 1 preapical anterodorsal, 1 apical anterior, 1 apical anteroventral, 1 apical ventral setae.

Wing strongly reduced ( Fig. 7 ).

Abdomen black, delicately greyish dusted, covered with long brownish hairs in male; female tergites 2–6 each with a row of marginal setae. Male sternite 4 about 2 times as long as wide ( Fig. 21). Male sternite 5 with broad in base lateral lobes, covered with long hairs (Fig. 64). Epandrium, cercal plate and surstyli as in Figs 65, 66.

DISTRIBUTION. Russia: Kuril Islands.

Figures

Figs 6–9. Scathophaga litorea (Fallén) (6, 8), S. exalata Ozerov (7) and S. incola (Becker) (9): 6 — anepisternum; 7–9 — wing. Рис. 6–9. Scathophaga litorea (Fallén) (6, 8), S. exalata Ozerov (7) и S. incola (Becker) (9): 6 — анЭпистерн; 7–9 — крыло.