Scathophaga yakutica Ozerov, 2017

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 : 240-241

Scathophaga yakutica Ozerov, 2017

Figs 42, 127–129.

yakutica Ozerov, 2017: 132 ( Scathophaga ). Type-locality: Aldan Plateau, right bank of the River Russkaya (ca. 58.56°N, 126.56°E), 60 km SE of Tommot ( Russia: Yakutia).

REMARK. This species was recorded in Russia from type locality only [ Ozerov, 2017: 132] .

MATERIAL EXAMINED. Buryatia: Barguzinsky Nature Reserve (ca. 54.35ºN 109.51ºE), 16.VII.1965, Negrobov (1 ♀, ZISP); Tyumen’ Oblast: Neroyka (ca. 64.57ºN 59.67ºE), 450 m, 5.IX.1990, Malozemov (1 ♂, ZISP) .

DESCRIPTION. Male. Female. Body-length 6.5– 7.6 mm.

Head. Frontal vitta yellow or reddish-yellow, with delicate whitish reflection; fronto-orbital plate blackish, greyish dusted. Face, parafacial and gena yellow, with whitish reflection. Postcranium black in upper quarter or third and yellow in lower part. 3 orbital and 3 frontal setae present. Scapus and pedicel reddish-yellow. Postpedicel black, approximately twice as long as wide. Arista bare. Palpus yellow.

Thorax greyish dusted. Scutum black completely or postpronotal lobe yellowish; pleural sclerites yellowish in ground color, but anatergite, katatergite, and mediotergite always black. Acrostichals setulose in two rows, but prescutellar pair stronger than other acrostichals, dorsocentrals 2+3, intra-alars 1+2, supra-alars (0+1)+2, postpronotals 2. Anepimeron bare. Scutellum black, greyish dusted, with a pair of strong basal scutellar and a pair of strong apical scutellar setae.

Legs. Coxae from yellow to brown. Femora, tibiae, and tarsi yellowish, in male fore femur darkened posteriorly or posterodorsally. Fore femur with whitish hairs, longer ventrally, in female with a row of dorsal/posterodorsal setae, in male with 4–5 dorsal/posterodorsal setae in apical third. Fore tibia with 2 dorsal, 1–2 posterior, 1 preapical dorsal, and 1 posterior apical setae. Mid femur with a row of anterior setae, also with 1 preapical posterior and 1 preapical posterodorsal setae. Mid tibia with 3 posterodorsal, 2 anterodorsal setae and a ring of apicals in both sexes, additionally with 1 ventral seta in female. Hind femur with a row of anterodorsal setae, and with 0–1 preapical anterior seta. Hind tibia with 3–4 anterodorsal, 3 posterodorsal, 1 preapical anterodorsal, 1 preapical posterodorsal and apical anterior setae in both sexes, additionally with 2 preapical anterior setae in female.

Wing tinged with brownish; crossveins r-m and dm-cu darkened.

Abdomen from yellowish to dark brownish, covered with not long hairs, tergites with black marginal setulae. Male sternites 4 approximately as long as wide, with median excision (Fig. 42); sternite 5 with narrow pointed apically lateral lobes ( Fig. 127 ). Epandrium, cercal plate and surstyli as in Figs 128, 129 .

DISTRIBUTION. Russia: Siberia (Buryatia, Tyumen’ Oblast, Yakutia) .

Figures

Figs 124–129. Scathophaga varipes (Holmgren) (124–126) and S. yakutica Ozerov (127–129): 124, 127 — male sternite 5; 125, 128 — epandrium, cercal plate and surstyli, lateral view; 126, 129 — same, dorsal view. 127–129 — after Ozerov, 2017, figs 1–3. Рис. 124–129. Scathophaga varipes (Holmgren) (124–126) и S. yakutica Ozerov (127–129): 124, 127 — стернит 5 самца; 125, 128 — Эпандрий, церки и сурстили, сбоку; 126, 129 — то же, сверху. 127–129 — по Ozerov, 2017, figs 1–3.