Gimnomera nigricorpus Ozerov, 2019

Ozerov, A. L., 2019, A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (2), pp. 195-218 : 206-207

Gimnomera nigricorpus Ozerov , sp.n.

Figs 17 , 51–53 .

MATERIAL. Holotype ♂, RUSSIA: Krasnoyarsk Krai: Taimyr, Agapa (ca. 71.412ºN 89.2689ºE), the River Pyasina , 14.VII.1967, Gorodkov ( ZISP). Paratypes: same labels (2 ♂♂,

ZMUM); Altai: Aktash env. (50.326ºN 87.739ºE), 2600 m, 6.VII.2016, N. Vikhrev (1 ♂, 1 ♀, ZMUM) ; Chukotka: Shmidt (68.8703ºN 179.3744ºW), 11.VII.1971, Gorodkov (1 ♀, ZISP) .

DESCRIPTION. Male, female. Small-sizes flies (3.2–3.5 mm long).

Black in ground colour; frontal vitta dark brownish; scutum fine greyish dusted completely or with fore shining stripes; anepisternum mostly shining; apical part of all femora and all tibiae yellow; abdomen fine greyish dusted; antenna black, but scapus brownish.

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

Thorax. Scutum covered with rare small hairs; acrostichals as hairs in two rows, dorsocentrals 2+1 (first presutural may be small), intra-alars absent, supra-alars 1+2, 1 strong 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 with several small hairs. Anepisternum with 1–2 black setae near posteri- or margin. Anepimeron bare. Scutellum with a pair of apical scutellar setae.

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

Wing clear; veins brownish. Vein R 1 bare. Calypters and halteres whitish; margins of calypters blackish.

Abdomen. Male sternite 4 circular; sternite 5 transverse, with moderate conical median lobes, covered with spinules and setae ( Fig. 17 ); epandrium, cercal plate and surstyli as in Figs 51–53 , cercal plate short and wide.

DISTRIBUTION. Russia: Altai, Chukotka, Krasnoyarsk Krai .

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 51–59. Epandrium, cercal plate and surstyli of Gimnomera spp.: 51–53 — G. nigricorpus sp.n.; 54–56 — G. novgorodovae (Ozerov); 57–59— G. nudipedis sp.n.; 51, 54, 57 — dorsolateral view; 52, 55, 58 — lateral view; 53, 56, 59 — dorsal view. Рис. 51–59. Эпандрий, церки и сурстили Gimnomera spp.: 51–53 — G. nigricorpus sp.n.; 54–56 — G. novgorodovae (Ozerov); 57–59— G. nudipedis sp.n.; 51, 54, 57 — дорсолатерально; 52, 55, 58 — сбоку; 53, 56, 59 — сверху.