Scathophaga tinctinervis ( Becker, 1894 )

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 : 239-240

Scathophaga tinctinervis ( Becker, 1894)

Figs 40, 121–123, 137.

tinctinervis Becker, 1894: 178 ( Coniosternum ). Type-locality: locality not stated.

REMARK. This species was recorded in Russia from Leningrad Oblast [ Gorodkov, 1986: 34] and Primorsky Krai [ Ozerov, Krivosheina, 2014: 219].

MATERIAL EXAMINED. Amur Oblast: Klimoutsy (51.470ºN 127.599ºE), 25.IX.1958, Zinov’ev (1 ♂, ZISP) ; Leningrad Oblast: Gatshina (59.56ºN 30.13ºE), 9. V.1954, A. Stackelberg (1 ♂, ZISP) ; Moscow Oblast: Golitsyno (55.649ºN 37.011ºE), 17 and 24.X.1981, A. Shatalkin (1 ♂, 1 ♀, ZMUM) ; Naro-Fominsk (55.357ºN 36.736ºE), 1.IV.2008, D. (1 ♀, ZMUM) ; Novosibirsk Oblast: Evsino env. (54.53ºN 83.38ºE), 20. VI.2015, O. Kosterin (1 ♂, ZMUM) ; Novosibirsk (54.825ºN 83.114ºE), 27.IV.2008, O. Kosterin (2 ♂♂, ZMUM) . See also Ozerov & Krivosheina [2014: 219] .

ADDITIONAL MATERIAL EXAMINED. Mongolia: 25 km WSW of Ikhtamir (ca. 47.4937ºN 100.9143ºE), 30.VIII.1967, Zaitzev (8 ♂♂, 10 ♀♀, ZISP) [determined by Gorodkov as S. grisea Malloch, 1920 ] .

DESCRIPTION. Male. Female. Body-length 5.4– 6.8 mm.

Head. Frontal vitta yellow, with delicate whitish reflection; fronto-orbital plate blackish, densely greyish dusted. Face, parafacial and gena yellow, with whitish reflection. Postcranium blackish. 3 orbital and 4–5 frontal setae present. Antenna black; postpedicel about twice as long as wide. Arista bare. Palpus yellow.

Thorax black, densely greyish dusted, with dark stripes and fuzzy spots on scutum and scutellum. Acrostichals not differentiated from the other hairs on scutum, dorsocentrals 2+3, intra-alars 1+2 (posterior small), supra-alars 1+2, postpronotals 2. Anepimeron with several hairs. 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 greyish dusted, black, except yellow apical quarter or third. All tibiae and all tarsi yellow. Fore femur covered with whitish hairs, with 3–4 dorsal setae or setulae in apical third. Fore tibia with 2–4 dorsal, 2–4 posterodorsal, 1–2 posterior, 1 preapical dorsal, 1 preapical anterodorsal, and 1 posterior apical setae. Mid femur with a row of anterior setae, 1 preapical posterior and 1 preapical posterodorsal setae. Mid tibia with 1–2 anterodorsal, 1–2 posterodorsal, 0–1 anteroventral, 0–1 posterior setae, also with a ring of apicals. Hind femur with a row of anterodorsal setae. Hind tibia with 2–3 posterodorsal, 2–3 anterodorsal, 0–1 anteroventral, 0–1 posterior setae, 1 preapical dorsal, 1 preapical anterodorsal and 1 apical anteroventral setae.

Wing clear; crossveins r-m and d-m not darkened.

Abdomen black, densely pale grey dusted, covered with short whitish hairs; tergites 2–6 each in both sexes with a row of marginal setulae. Male sternite 4 about 1.5 times as long as wide (Fig. 40). Male sternite 5 with moderately wide lateral lobes ( Fig. 121). Cercal plate shorter than surstyli ( Figs 122, 123). Aedeagus as in Fig. 137 .

DISTRIBUTION. Russia: throughout midland. — Europe, Mongolia [ Gorodkov, 1974: 391, as S. grisea ]).

Figures

Figs 130–137. Aedeagus of Scathophaga spp., lateral view: 130 — S. buryatica Ozerov et Krivosheina; 131 — S. decipiens (Haliday); 132 — S. incompleta Ozerov et Krivosheina; 133 — S. lapponica (Ringdahl); 134 — S. mollis (Becker); 135 — S. nigripalpis (Becker); 136 — S. obscura (Fallén); 137 — S. tinctinervis (Becker). 130 — after Ozerov & Krivosheina, 2019, fig. 2; 131, 132 — after Ozerov & Krivosheina, 2020, figs 5, 11. Рис. 130–137. Эдеагус Scathophaga spp., сбоку: 130 — S. buryatica Ozerov et Krivosheina; 131 — S. decipiens (Haliday); 132 — S. incompleta Ozerov et Krivosheina; 133 — S. lapponica (Ringdahl); 134 — S. mollis (Becker); 135 — S. nigripalpis (Becker); 136 — S. obscura (Fallén); 137 — S. tinctinervis (Becker). 130 — по Ozerov & Krivosheina, 2019, fig. 2; 131, 132 — по Ozerov & Krivosheina, 2020, figs 5, 11.