Scathophaga cordylurina ( Holmgren, 1883 )

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 : 208-209

Scathophaga cordylurina ( Holmgren, 1883)

Figs 17, 52–54 .

cordylurina Holmgren, 1883: 173 ( Scatomyza ). Type-locality: Waigatsch. Schabarowa ( Russia: Vaigach Peninsula, Khabarovo).

longinqua Becker, 1915: 66 ( Scopeuma ). Type-locality: “Tundra des Fl. Kara” ( Russia: Tyumen’ Oblast).

REMARK. The species was recorded in Russia from north of european part (Yugorsky Peninsula, Kolguev I., Vaygach I.) [ Holmgren, 1883: 173; Gorodkov, 1970: 451, 1986: 30], Siberia (Tyumen’ Oblast, Taimyr Peninsula) [ Becker, 1915: 66 (as S. longinqua ); Ozerov, Barkalov, 2014: 563], Yakutia [ Engelmark, 1999: 159], Far East [ Gorodkov, 1986: 30 (without specifying the place of collecting); Ozerov & Krivosheina, 2014: 216].

MATERIAL EXAMINED. Arkhangelsk Oblast: Amderma (69.756ºN 61.661ºE), 10–12.VIII.1961, Gorodkov (5 ♂♂, 2 ♀♀, ZISP); Kara [= Ust’-Kara (69.246ºN 64.923ºE)], 10–11.VIII.1961, Gorodkov (6 ♂♂, 2 ♀♀, ZISP); Kolguev I., Bugrino (68.782ºN 49.309ºE), 20–21.VIII.1980, Gorodkov (1 ♂, 2 ♀♀, ZISP); Chukotka: Iul’tin (67.866ºN 178.733ºW), 21.VII.1963, Gorodkov (1 ♂, 2 ♀♀, ZISP); Pevek (69.702ºN 170.298ºE), 3.VII.1963, Gorodkov (6 ♂♂, 3 ♀♀, ZISP);Vrangel I., Mts Somnitel’nye (71.0ºN, 179.533ºE), 14.VII.–15.VIII.2006, O. Khruleva (1 ♂, 1 ♀, ZMUM); Krasnoyarsk Krai: Agapa (71.421ºN 89.2512ºE), Riv- er Pyasina, 15–19.VII.1967, Gorodkov (12 ♂♂, 7 ♀♀, ZISP); Dikson (73.508ºN 80.5297ºE), 8.VIII.1967, Gorodkov (2 ♂♂, 1 ♀, ZISP); Dikson I. (73.505ºN 80.352ºE), 27.VII.1948, Korotkevich (22 ♂♂, 17 ♀♀, ZISP); Dudinka (69.404ºN 86.182ºE), 2.VII.1967, Gorodkov (8 ♂♂, 4 ♀♀, ZISP); same place, 26– 29.VII.2011, N. Vikhrev (1 ♂, ZMUM); Igarka (67.467ºN 86.603ºE), 26.VII.1966, V. Sychevskaya (2 ♀♀, ZMUM); Yakutia: env. of Ystannakh-Khocho Vill. (ca. 72.58ºN, 121.42ºE), 20.VIII.2010, A. Yadrenkin (3 ♂♂, 1 ♀, ZMUM); Nizhneyansk (71.441ºN 136.1355ºE), 31.VII.1974, Gorodkov (3 ♂♂, ZISP); Saskylakh env. (71.966ºN 114.094ºE), 9.VIII.1988, Gorodkov (12 ♂♂, 6 ♀♀, ZISP); Tiksi env. (71.635ºN 128.857ºE), 9.VII. and 11.VIII.1957, Gorodkov (20 ♂♂, 8 ♀♀, ZISP); Uryung-Khaya (72.811ºN 113.232ºE), 115 km ENE, 8.VIII.1988, Gorodkov (26 ♂♂, 19 ♀♀, ZISP). See also Ozerov & Krivosheina [2014: 218] and Ozerov & Barkalov [2014: 563].

DESCRIPTION. Male. Female. Body-length 5.6– 7.8 mm.

Head. Frontal vitta reddish-orange, with delicate whitish reflection; fronto-orbital plate black, delicate greyish dusted. Face, parafacial and gena reddish-orange or blackish, with whitish reflection. Postcranium black. 3 orbital and 5–7 frontal setae present. Antenna black. Postpedicel approximately 2 times as long as wide. Arista pubescent, the longest hairs approximately equal to 1/3–1/2 width of postpedicel. 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, 2+3 hair-like dorsocentrals, intra-alars 1+2, supra-alars 1+2, postpronotals 1–2. Anepimeron bare. Scutellum black, greyish dusted, with a pair of strong basal scutellar and a pair of strong apical scutellar setae, also with 1–3 pairs of lateral scutellar setae.

Legs greyish dusted or shiny (rarely). All coxae black; all femora from almost completely yellow to black completely; all tibiae and tarsi brownish or dark brown. Male femora covered with dense, long hairs, without conspicuous setae. Female fore femur without conspicuous setae. Fore tibia with 2–3 dorsal, 0–1 posterior, 1 preapical dorsal, and 1 posterior apical setae. Mid femur with a row of anterodorsal setae in female, also with 1 preapical posterior and 1 preapical posterodorsal setae in both sexes. Mid tibia with 1 posterodorsal, 1 anterodorsal setae and a ring of apicals. Female hind femur with a row of anterodorsal setae or setulae. Hind tibia with 2 anterodorsal, 2 posterodorsal, 1 preapical dorsal, 1 preapical anterodorsal, 1 apical anteroventral setae.

Wing tinged with brownish; crossveins r-m and d-m not darkened.

Abdomen black, densely greyish dusted, covered with dense hairs in male, less dense and shorter in female; female tergites 2–6 without strong marginal setae. Male sternite 4 wider than long ( Fig. 17); sternite 5 wide, without lateral lobes, but with small apical median processes ( Fig. 52 ). Epandrium, cercal plate and surstyli as in Figs 53, 54 .

DISTRIBUTION. Russia: north from Kola Peninsula to Chukotka.

Figures

Figs 52–60. Scathophaga cordylurina (Holmgren) (52–54), S. crinita (Coquillett) (55–57) and S. dasythrix (Becker) (58–60): 52, 55, 58 — male sternite 5; 53, 56, 59 — epandrium, cercal plate and surstyli, lateral view; 54, 57, 60 — same, dorsal view. Рис. 52–60. Scathophaga cordylurina (Holmgren) (52–54), S. crinita (Coquillett) (55–57) и S. dasythrix (Becker) (58–60): 52, 55, 58 — стернит 5 самца; 53, 56, 59 — Эпандрий, церки и сурстили, сбоку; 54, 57, 60 — то же, сверху.