Gimnomera dorsata ( Zetterstedt, 1838 )

Ozerov, A. L., 2019, A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (2), pp. 195-218 : 201-202

Gimnomera dorsata ( Zetterstedt, 1838)

Figs 12 , 36–38 .

dorsata Zetterstedt, 1838: 735 ( Cordylura ). Type-locality: “Lapponia Norvegica ... ad Giebostad Nordlandiae ... Dowre” ( Norway).

pectoralis Zetterstedt, 1838: 734 ( Cordylura ). Type-locality: “ad Drivstuen in Dowre... (Lapponia)” (Dovre, Norway).

Noted by Gorodkov [1970] from Kola Peninsula.

MATERIAL. No found material in ZISP and ZMUM.

ADDITIONAL MATERIAL. A female labelled “Giebostad”, “ Lectotypus Cordylura dorsata Ztt. Designated by J. R. Vockeroth 19” [designation not published] ( MZLU). This specimen has been labelled and is herewith designated as lectotype of Cordylura dorsata Zetterstedt. A male labelled “ C. dorsata ♂ ( pectoralis Drivst [uen] Lappon Dovre Boh.”, “ Lectotypus Cordylura pectoralis Ztt. Designated by J. R. Vockeroth 19” [designation not published] has been labelled and is herewith designated as lectotype of Cordylura pectoralis Zetterstedt (MZLU) ; a female labelled “ C. dorsata ♀ ( pectoralis Driv (Lap) Dovre ”, has been labeled as paralectotype ( MZLU); both are conspecific with Gimnomera dorsata ( Zetterstedt, 1838) . “Abisco 7.10” (1 ♂, 1 ♀, ZMHB); “St.Moritz, 26.VII.1914, Oldenberg” (1 ♂, ZMHB) .

DESCRIPTION. Male, female. Small-sized flies (3.8–4.5 mm long).

Yellow in ground colour; ocellar triangle black; median occipital sclerite brownish; scutum brownish completely or in central part (brownish stripe between postpronotal lobes); anepimeron, katatergite, meron and metepisternum from yellow to brownish; mediotergite blackish; female abdominal tergites narrowly black near posterior margin. Thorax, also male abdomen fine greyish dusted, female abdomen shining. Scutum with fore shining stripes: two thin between dorsocentral lines, two wide between dosocentral and supra-alar lines.

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

Thorax. Acrostichals as hairs in two rows, dorsocentrals (1–2)+1 (first presutural 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 0–1 setula. Anepisternum with 1–2 black setae along posterior margin. Anepimeron bare. Scutellum shining or subshining, with a pair of lateral scutellar and a pair of apical scutellar setae.

Legs. Fore femur with 2–3 posterodorsal setae. Fore tibia with 1–2 dorsal setae, 1 posterodorsal and 1 posterior setae at middle, 1 preapical dorsal and 1 apical posterior setae. Mid femur with a row of anterior setae, also with 1 preapical posterior seta. Mid tibia with 1 posterodorsal, 1 posterior, 1 anterodorsal at middle, with 1 preapical dorsal seta and a ring of apical setae. Hind femur with 2–4 anterior/anterodorsal, 1–2 preapical anteroventral setae. Hind tibia with 1 posterodorsal, 2 anterodorsal, 1 preapical dorsal setae, also with 1 apical anteroventral and 1 anterodorsal setae.

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

Abdomen. Male sternite 4 trapezoid; sternite 5 transverse, with angulate median lobes, carrying spinules ( Fig. 12 ). Epandrium, cercal plate and surstyli as in Figs 36–38 , cerci bifurcate.

DISTRIBUTION. Russia: Kola Peninsula [ Gorodkov, 1970]. — Europe [ Šifner, 2008].

Figures

Figs 8–13. Male sternites 4 (lower) and 5 (upper) of Gimnomera: 8 — G. alanica (Ozerov); 9 — G. albipila (Zetterstedt); 10 — G. castanipes (Becker); 11 — G. cuneiventis (Zetterstedt); 12 — G. dorsata (Zetterstedt); 13 — G. hirta (Hendel). Рис. 8–13. Стерниты 4 (вниЗу) и 5 (вверху) самца Gimnomera: 8 — G. alanica (Ozerov); 9 — G. albipila (Zetterstedt); 10 — G. castanipes (Becker); 11 — G. cuneiventis (Zetterstedt); 12 — G. dorsata (Zetterstedt); 13 — G. hirta (Hendel).

Figs 33–41. Epandrium, cercal plate and surstyli of Gimnomera spp.: 33–35 — G. cuneiventis (Zetterstedt); 36–38 — G. dorsata (Zetterstedt); 39–41 — G. hirta (Hendel); 33, 36, 39 — dorsolateral view; 34, 37, 40 — lateral view; 35, 38, 41— dorsal view. Рис. 33–41. Эпандрий, церки и сурстили Gimnomera spp.: 33–35 — G. cuneiventis (Zetterstedt); 36–38 — G. dorsata (Zetterstedt); 39–41 — G. hirta (Hendel); 33, 36, 39 — дорсолатерально; 34, 37, 40 — сбоку; 35, 38, 41 — сверху.