Gimnomera palliseta 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 : 208

Gimnomera palliseta Ozerov , sp.n.

Figs 20 , 60–62 .

MATERIAL. Holotype ♂, RUSSIA: Magadan Oblast, Sokol env. (59.92ºN 150.71ºE), 11–19.VII.2014, N. Vikhrev ( ZMUM); Paratypes: same labels (3 ♂♂, 7 ♀♀, ZMUM); Krasnoyarsk Krai: Dudinka (69.4042ºN 86.1822ºE), 3.VII.1967, Gorodkov (1 ♂, ZISP); Irkutsk Oblast: Ust’-Kut (56.7662ºN 105.6534ºE), 8. VI .1957, Gorodkov (1 ♂, ZISP) .

DESCRIPTION. Male, female. Medium-sized flies (3.8–4.3 mm long).

Head. Frontal vitta from yellow to black, matt; fronto-orbital plate from yellow to black, whitish dusted. Ocellar triangle black. Face, parafacial and gena from yellow to black, whitish dusted. Postcranium black completely or brownish partly, greyish dusted. 3 orbitals, 2–3 frontals, 1 ocellar, 1 small postocellar, 1 inner vertical, 1 outer vertical (all setae yellow); 1 pair of yellow vibrissae present. Scapus and pedicel brownish; postpedicel black, approximately 1.5 times as long as wide. Arista black. Palpus black.

Thorax from brownish to black, greyish dusted, only scutum mostly shining and anepisternum with shining spot anteriorly. Scutum densely covered with small yellow hairs, including acrostichal area; dorsocentrals 0+1, intra-alars absent, supra-alars (0–1)+1, postpronotum with 1 setula, anterior margin of postpronotum with short erect black spinules, notopleurals 2, postalars 2. Proepisternum with 1 pale seta near lower margin. Proepimeron with 1 pale seta or setula. Anepisternum with 2 pale setae near posterior margin. Anepimeron bare. Scutellum from brownish to black, with a pair of lateral scutellar and a pair of apical scutellar setae.

Legs. All femora black completely or brownish in ground color, all tibiae from yellow comletely to darkened, tarsi of all legs usually yellow. All setae of legs pale. Fore femur with 2–4 pale posterodorsal setae. Fore tibia with 1 dorsal/anterodorsal seta, 1 posterodorsal and 1 posterior setae at middle, 1 preapical dorsal and 1 apical posterior setae. Mid femur with 1 preapical posterodorsal seta. Mid tibia with 0– 1 anterodorsal, 1 preapical dorsal setae and a ring of apical setae. Hind femur with 1–4 anterodorsal setae in apical half and 0–1 preapical anterior seta. Hind tibia with 1 anterodorsal, 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 whitish or yellowish.

Abdomen black or dark brown, usually subshining in male and shining in female. Male sternite 4 rectangular, wider than long; sternite 5 transverse with wide trapezoid median lobes, covered with spinules ( Fig. 20 ). Epandrium, cercal plate and surstyli as in Figs 60– 62 .

DISTRIBUTION. Russia: Irkutsk Oblast, Magadan Oblast, Krasnoyarsk Krai .

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.