Oedoparena minor Suwa, 1981

Ozerov, A. L. & Krivosheina, M. G., 2021, First record of the genus Oedoparena Curran, 1934 (Diptera: Dryomyzidae) from Russia, Far Eastern Entomologist 442, pp. 13-17 : 14-16

Oedoparena minor Suwa

Figs 1–8

Oedoparena minor Suwa, 1981: 30 (type locality: Japan, Hokkaido, Otarushi, Asari beach).

MATERIAL EXAMINED. Russia: Kuril Islands, Shikotan Island, cape Krai Sveta,

43.846ºN, 146.913ºE, 22. VI 1968, 2 ♂, 2 ♀, leg. E. Nartshuk ( ZISP and ZMUM) .

DESCRIPTION. Male and female. Body blackish in ground colour, grayish and slightly brownish dusted.

Head ( Fig. 1 ). Frontal vitta and fronto-orbital plate gray dusted. Gena above eye appro-

ximately equal to vertical diameter of eye. Orbitals 2–3, 1 ocellar, 1 postocellar, 1 inner vertical, no outer verticals. Antenna blackish, gray dusted. Postpedicel round in lateral view.

Arista bare. Palpus blackish, gray dusted. Clypeus well developed and upturned.

Thorax. Acrostichals not differentiated from the other long hairs on scutum, and they not form rows; dorsocentrals (1–2)+(4–5), no intra-alars, supra-alars 1+1, no postpronotals, 1 no-

topleural, postalars 2. Proepisternum covered with setulae and with seta near lower margin.

Anepisternum ( Fig. 2 ) and katepisternum densely setose. Anepimeron bare, excluding 1–2

hairs anterodorsally. Scutellum ( Fig. 3 ) with three pairs of setae: basal scutellar, lateral scutellar and apical scutellar.

Legs blackish, grayish or brownish dusted. Fore tibia with preapical dorsal and preapical ventral setae. Mid tibia with a ring of apical setae. Hind tibia with a long preapical dorsal setula.

Wing ( Fig. 4 ) tinged with brown, lacking dark markings. Veins brown. Vein R 1 bare on dorsal surface.

Abdomen blackish, grayish and brownish dusted, with no strong setae. Sternites 3–4

elongate, about 2 times as long as wide, sternite 5 shorter and transverse ( Fig. 5 ); surstylus subrectangular ( Fig. 7 ); ventromedial process not exposed in lateral view ( Figs 6, 7 ); disti-

phallus angulate, ventral surface conspicuously setulose ( Fig. 8 ).

MEASUREMENTS. Length of body 3.8–4.1 mm, length of wing 4.0– 4.4 mm.

NOTE. Specimens described from Hokkaido have length of wing to 7 mm (Suwa, 1981).

DISTRIBUTION. Russia (first record): Kuril Islands (Shikotan I.), Japan: Hokkaido.

scutellum, dorsal view; 4 – wing.

and ventromedial processes, dorsal view; 7 – same, lateral view; 8 – aedeagus, lateral view.

Figures

Figs 1–4. Oedoparena minor Suwa, ♂: 1 – head, lateral view; 2 – anepisternum; 3 –

Figs 5–8. Oedoparena minor Suwa, ♂: 5 – sternites 3–5; 6 – epandrium, cerci, surstyli