Gimnomera lasiostoma ( Becker, 1894 )

Ozerov, A. L., 2019, A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (2), pp. 195-218 : 202-205

Gimnomera lasiostoma ( Becker, 1894)

Figs 14 , 42–44 .

lasiostoma Strobl, 1894: 79 . Nomen nudum.

lasiostoma Becker, 1894: 184 ( Cochliarium ). Type-locality: “St. Moritz” ( Switzerland).

Reported by Ozerov & Barkalov [2014] from Taimyr and by Ozerov & Krivosheina [2014] from Russian Far East.

MATERIAL. Altai: Chikhachev ridge, 2600 m, (49.81ºN 89.55ºE), A. Barkalov (1 ♂, ZMUM) ; Kosh-Agach env., (50.01ºN 88.66ºE), 1750 m, 2–4.VII.2016, N. Vikhrev (13 ♂♂, 8 ♀♀, ZMUM) ; Tashanta (49.7178ºN 89.1913ºE), 4.VII.1964, Grunin (1 ♂, ZISP) ; Buryatia: Khargun , 6 km E of Kyren (51.6837ºN 102.1326ºE), Sayan, 11.VII.1965, Gorodkov (1 ♀, ZISP) ; Mondy env. (51.6758ºN 100.9925ºE), 18.VII.1965, Gorodkov (1 ♀, ZISP) ; Irkutsk Oblast: Cherskiy peak (51.5286ºN 103.5873ºE), 14.VII.1984, Zlobin (1 ♀, ZISP) ; Krasnodar Krai: Teberda Reserve (43.4438ºN 41.7381ºE), 26. V.1964, Gorodkov (1 ♀, ZISP) ; Krasnoyarsk Krai: Khatanga (71.9758ºN, 102.4824ºE), 11– 12.VII.1970, V. Zherikhin, I. Sukatsheva (1 ♂, ZMUM) ; the lake Taymyrskoe , west bank W of Baynur-Nehru (~ 74.1176ºN 100.9506ºE), 30.VII.–7.VIII.1976, A. Rasnitsyn, I. Sukatsheva (1 ♂, ZMUM) ; Taimyr Biosphere Reserve, Ary-Mas field station (72.5ºN 101.94ºE), 14 m, 12–22.VII.2010, À. Barkalov (2 ♀♀, ISEA) ; Magadan Oblast: the River Donyshko (60.41ºN 151.52ºE), 17.VII.2014, N. Vikhrev (1 ♀, ZMUM) ; Sokol env. (59.92ºN 150.71ºE), 11–19.VII.2014, N. Vikhrev (1 ♂, 10 ♀♀, ZMUM) ; Sakhalin Oblast: Due (50.8243ºN 142.1114ºE), 20. VI.1914, Belousov (1 ♀, ZISP) ; Yakutia: Olenek (68.5271ºN 114.0452ºE), 1874, Chekanovskiy (1 ♀, ZISP) ; Nizhneyansk (71.441ºN 136.1355ºE), 31.VII.1974, Gorodkov (1 ♂, ZISP) .

ADDITIONAL MATERIAL. Mongolia: Selenge aimag, 30 km ENE of Dzun-Khira, 6.VIII.1975, Nartshuk (1 ♀, ZISP) .

DESCRIPTION. Male, female. Small or medium-sized flies (3.8–5.4 mm long).

Colour from yellow to black, tarsi of all legs always blackish.

Head with 3 orbital, 2–4 frontal, 1 ocellar, 1 small postocellar, 1 inner vertical, 1 outer vertical setae; 2 pairs of vibrissae. Postpedicel approximately 1.5 times as long as wide. Antenna black. Arista black. Palpus yellow.

Thorax. Scutum densely covered with small yellow hairs, including acrostichal area; dorsocentrals 0+1, intra-alars absent, supra-alars 0+1, postpronotal absent, 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 with several small hairs. Anepisternum with 1–2 black setae near posterior margin. Anepimeron with several small hairs. Scutellum with a pair of apical scutellar setae.

8 9 10

12 13 23

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

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

Abdomen. Male sternite 4 rectangular, about 2 times as wide as long; sternite 5 transverse, with shallow rounded median lobes, carrying spinules ( Fig. 15 ). Epandrium, cercal plate and surstyli as in Figs 45– 47 .

DISTRIBUTION. Russia: Altay, Buryatia, Irkutsk Oblast, Krasnodar Krai, Krasnoyarsk Krai, Magadan Oblast, Sakhalin Oblast, Yakutia. — Central Europe [ Šifner, 2008], Mongolia (first record).

Figures

Figs 14–19. Male sternites 4 (lower) and 5 (upper) of Gimnomera: 14 — G. lasiostoma (Becker); 15 — G. mellina (Becker); 16 — G. montana Ozerov et Krivosheina; 17 — G. nigricorpus sp.n.; 18 — G. novgorodovae (Ozerov); 19 — G. nudipedis sp.n. Рис. 14–19. Стерниты 4 (вниЗу) и 5 (вверху) самцов Gimnomera: 14 — G. lasiostoma (Becker); 15 — G. mellina (Becker); 16 — G. montana Ozerov et Krivosheina; 17 — G. nigricorpus sp.n.; 18 — G. novgorodovae (Ozerov); 19 — G. nudipedis sp.n.

Figs 42–50. Epandrium, cercal plate and surstyli of Gimnomera spp.: 42–44 — G. lasiostoma (Becker); 45–47 — G. mellina (Becker); 48–50 — G. montana Ozerov et Krivosheina; 42, 45, 48 — epandrium, cerci and surstyli, dorsolateral view; 43, 46, 49 — same, lateral view; 44, 47, 50 — same, dorsal view. Рис. 42–50. Эпандрий, церки и сурстили Gimnomera spp.: 42–44 — G. lasiostoma (Becker); 45–47 — G. mellina (Becker); 48–50 — G. montana Ozerov et Krivosheina; 42, 45, 48 — Эпандрий, церки и сурстили, дорсолатерально; 43, 46, 49 — то же, сбоку; 44, 47, 50 — то же, сверху.