Gimnomera tarsea ( Fallén, 1819 )

Ozerov, A. L., 2019, A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (2), pp. 195-218 : 212

Gimnomera tarsea ( Fallén, 1819)

Figs 1, 21 , 63–65 .

tarsea Fallén, 1819: 8 ( Cordylura ). Type-locality: “Uplandia... Scania ...” ( Sweden).

Noted by Gorodkov [1986] for the European part of Russia without indicating specific locality.

MATERIAL. Arkhangelsk Oblast: Nizhnyaya Pesha (66.7518ºN 47.7605ºE) , 22.VIII.1978, Gorodkov (1 ♀, ZISP); Belush’e env. (66.89ºN 47.61ºE) , 24.VIII.1978, Gorodkov (1 ♀, ZISP); Karelia: Primorskiy (66.5463ºN 33.1036ºE) , 3–6.VII.2010, A.L. Ozerov (3 ♂♂, 24 ♀♀, ZMUM); Komi: Shchel’yabozh (66.29ºN 56.45ºE) , 14.VIII.1978, Gorodkov (4 ♂♂, ZISP); Leningrad Oblast: Shuvalovo (60.0478ºN 30.2833ºE) , 9. V .1897 , Yakobson (1 ♂, ZISP); Fan-der-Flit station (58.6415ºN 29.6935ºE), 13–27. VI .1925 , A. Stackelberg (2 ♂♂, 2 ♀♀, ZISP); Kartashevskaya (59.4076ºN 30.0714ºE), 8. VI .1926 , A. Stackelberg (2 ♀♀, ZISP).

DESCRIPTION. Male, female. Medium-sized flies (4.1–5.8 mm long).

Yellow or reddish-yellow species, only ocellar triangle and postpedicel black, also female abdominal tergites narrowly black along posterior margin. Scutum shining, the rest parts of thorax whitish microtrichose. Abdomen subshining in male and shining in female.

Head with 2–3 orbital, 3 frontal, 1 ocellar, 1 small postocellar, 1 inner vertical, 1 outer vertical setae; 1 pair of vibrissae present. Postpedicel approximately 2.0 times as long as wide. Arista black. Palpus yellow.

Thorax. Acrostichals as hairs in two rows, dorsocentrals 2+(1–2), intra-alars (0–1)+0, supra-alars 1+2, 1 postpronotal, anterior margin of postpronotum with short erect black spinules, notopleurals 2, postalars 2. Proepisternum with 1 seta near lower margin. Proepimeron with 1 seta and several hairs. Anepisternum with 1–2 setae near posterior margin. Anepimeron bare. Scutellum black, with a pair of lateral scutellar and a pair of apical scutellar setae.

Legs. Fore femur with 2–4 posterodorsal setae in apical half. Fore tibia with 1–2 anterodorsal, 1 posterodorsal and 1–2 posterior setae at middle, also with 1 preapical dorsal, 1 apical anterodorsal and 1 apical posterior setae. Mid femur with 4–7 anterior setae in apical half, 0–1 preapical posterodorsal and 1 preapical posterior setae. Mid tibia with 1 anterodorsal, 0–1 posterodorsal, 1 preapical dorsal setae and a ring of apical setae. Hind femur with 2–5 anterodorsal setae in apical half, also with 0–1 preapical posterodorsal and 0–1 preapical posterior setae. Hind tibia with 2 anterodorsal, 1 posterodorsal, 1 preapical dorsal setae, also with 1 apical anteroventral and 1 apical anterodorsal setae.

Wing slightly brownish; veins brownish. Vein R 1 setulose on apical half of dorsal surface. Calypters, margins of calypters, and halteres yellowish.

Abdomen. Male sternite 4 oval, wider than long; sternite 5 transverse, with moderate median lobes, carrying spinules ( Fig. 21 ). Epandrium, cercal plate and surstyli as in Figs 63–65 .

DISTRIBUTION. Russia: Arkhangelsk Oblast, Karelia, Komi, Leningrad Oblast. — Europe [ Šifner, 2008] .

Figures

Figs 20–23. Male sternites 4 (lower) and 5 (upper) of Gimnomera: 20 — G. palliseta sp.n.; 21 — G. tarsea (Fallén); 22 — G. tibialis (Malloch); 23 — G. ziegleri (Ozerov). Рис. 20–23. Стерниты 4 (вниЗу) и 5 (вверху) самцов Gimnomera: 20 — G. palliseta sp.n.; 21 — G. tarsea (Fallén); 22 — G. tibialis (Malloch); 23 — G. ziegleri (Ozerov).

Figs 60–68. Epandrium, cercal plate and surstyli of Gimnomera spp.: 60–62 — G. palliseta sp.n.; 63–65 — G. tarsea (Fallén); 66–68 — G. tibialis (Malloch); 60, 63, 66 — dorsolateral view; 61, 64, 67 — lateral view; 62, 65, 68 — dorsal view. Рис. 60–68. Эпандрий, церки и сурстили Gimnomera spp.: 60–62 — G. palliseta sp.n.; 63–65 — G. tarsea (Fallén); 66–68 — G. tibialis (Malloch); 60, 63, 66 — дорсолатерально; 61, 64, 67 — сбоку; 62, 65, 68 — сверху.