Gimnomera mellina ( Becker, 1900 )

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

Gimnomera mellina ( Becker, 1900)

Figs 15 , 45–47 .

mellina Becker, 1900: 57 ( Gymnomera ). Type-locality: Dudinka (ca. 69.3998ºN 86.1836ºE) ( Russia, Krasnoyarsk Krai).

This species was noted for Russia from Krasnoyarsk Krai [ Becker, 1900; Ozerov & Krivosheina, 2013].

MATERIAL. Irkutsk Oblast: Cherskiy peak (51.5286ºN 103.5873ºE), 14.VII.1984, Zlobin (1 ♀, ZISP); Krasnoyarsk Krai: Agapa (ca. 71.412ºN 89.2689ºE), the River Pyasina , 15– 18.VII.1967, Gorodkov (9 ♂♂, 3 ♀♀, ZISP); Turuchansk (65.7972ºN 87.9586ºE), 27. VI .1967, Gorodkov (2 ♀♀, ZISP) .

DESCRIPTION. Male, female. Small or medium-sized flies (3.5–4.1 mm long).

Yellow species, only ocellar triangle black. Scutum shining, the rest parts of thorax and abdomen subshining.

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

Thorax. Acrostichals as small hairs in two rows, dorsocentrals 2+2 (anterior margin of scutum additionally with a pair of erect black setae), intra-alars absent, supra-alars 1 (very small)+2, postpronotal lobe anteriorly with short erect spinules, but without another setae, notopleurals 2, postalars 2. Proepisternum with 1 seta near lower margin. Proepimeron with 1 seta and sometimes with several small hairs. Anepisternum with 1–2 black setae near posterior margin. Anepimeron without hairs. Scutellum with a pair of apical scutellar setae.

Legs. Fore femur with 3–4 posterodorsal setae in apical half. Fore tibia with 1 dorsal/anterodorsal seta, 1 posterodorsal and 1 posterior setae at middle, 1 preapical dorsal and 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, 1 posterodorsal, 0–1 posteri- or setae, 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 1–2 anterodorsal, 1 anteroventral, 1 preapical dorsal setae, also with 1 apical anteroventral and 1 apical anterodorsal setae.

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

Abdomen. Male sternite 4 circular; sternite 5 transverse, with long median lobes, covered with spinules ( Fig. 15 ). Epandrium, cercal plate and surstyli as in Figs 45–47 .

DISTRIBUTION. Russia: Irkutsk Oblast, 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 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.