Dryomyzidae

Ozerov, A. L. & Krivosheina, M. G., 2022, A review of the family Dryomyzidae (Diptera) of Russia, Russian Entomological Journal 31 (3), pp. 312-326 : 312-313

Family Dryomyzidae

Dryomyzinae Schiner, 1862: 148 [as the subfamily Dryomyzinae , family Muscidae ]. Type genus: Dryomyza Fallén, 1820 .

Medium-sized to large flies ( Fig. 1 ), body 4–18 mm in length, strong bristled to quite hairy, and yellow to brown or dark grey in colour.

Head slightly higher than long ( Figs 2, 3); eyes roundish or oval, moderately large, separated by broad frontal vitta in both sexes. Gena high (ca. 1/2–2/3 eye height to equal height of eye). Face uniformly sclerotized, without fascial carina developed, shallowly convex in profile. Antenna of moderate size, oriented ventrally; scape and pedicel small; postpedicel circular to elongated oval, with bare to plumose arista ( Figs 2–5). Clypeus conspicuous, sometimes protruding ( Figs 2, 3). Palpus and proboscis well-developed, but neither very large nor long. Chaetotaxy: 1 inner and 0–1 outer vertical, 1–3 lateroclinate fronto-orbital, 1 ocellar, and 1 postocellar setae present, the latter parallel or slightly divergent; no vibrissae.

Thorax somewhat longer than wide. Scutum moderately convex, with postpronotal lobes distinct. Chaetotaxy: 1 proepisternal (usually long), 0 proepimeral, usually several dorsal katepisternal (in Oedoparena Curran katepisternum with long fine hairs only), 0 anepisternal, 0–1 postpronotal, 1–2 notopleural, 1+1 supra-alar, 1–7 dorsocentral, 2 postalar setae present; acrostichal setae either absent or with a prescutellar pair; scutellum with 2–3 pairs of scutellar setae ( Figs 8, 9 ). Lower margin of posterior spiracle without setae. Postmetacoxal bridge absent.

Legs slender to rather robust, not differ in both sexes; all tibiae with preapical dorsal seta; in Paradryomyza hind femur bearing two rows of spinules apically on ventral surface ( Figs 10, 11 ).

Wing extending beyond apex of abdomen, hyaline to lightly infuscate or tawny; crossveins sometimes clouded ( Fig. 6 ). Costal vein unbroken; subcostal vein complete; vein R 1 bare dorsally or setose along all length or at least on basal half; vein A 1 +CuA 2 evident to wing margin; crossvein bm-cu always present and distinctly apical of vein CuA2.

Abdomen ovoid, usually quite densely hairy, especially in male. Abdominal spiracles 2 to 5 located in tergites or membrane ( Oedoparena minor Suwa, 1981 ). Female abdominal tergites 6 and 7 of Paradryomyza spinulose ( Fig. 12 ). Male genitalia: surstylus simple; epandrium with a pair of usually long projections (ventromedial processes) ( Figs 13–33 ); distiphallus of aedeagus angulate, dorsal or ventral surface usually conspicuously setulose ( Figs 34–43 ). Female with 3 small spermathecae.

Figures

Fig. 1. Dryomyza anilis Fallén, ♀. Рис. 1. Dryomyza anilis Fallén, ♀.

Figs 8–12. Dryomyza anilis Fallén (8), Oedoparena minor Suwa (9), Paradryomyza spinigera Ozerov (10) and Paradryomy- za setosa (Bigot) (11, 12): 8, 9 — scutellum, dorsally; 10, 11 — apical part of hind femur, posteroventrally; 12 — end of female abdomen. Рис. 8–12. Dryomyza anilis Fallén (8), Oedoparena minor Suwa (9), Paradryomyza spinigera Ozerov (10) и Paradryomyza setosa (Bigot) (11, 12): 8, 9 — Щиток, сверху; 10, 11 — апикальнаЯ часть Заднего бедра, постеровентрально; 12 — конец брюШка самки.

Figs 6–7. Wing of Dryomyza anilis Fallén (6) and Oedoparena minor Suwa (7). 7 — after Ozerov & Krivosheina, 2021, fig. 4. Рис. 6–7. Крыло Dryomyza anilis Fallén (6) и Oedoparena minor Suwa (7). 7 — по Ozerov & Krivosheina, 2021, fig. 8.

Figs 13–18. Genitalia of Dryomyzidae, lateral view: 13 — Dryomyza anilis Fallén; 14 — Dryomyza caucasica (Ozerov); 15 — Dryomyza ecalcarata Kurahashi; 16 — Dryomyza formosa (Wiedemann); 17 — Dryope decrepita (Zetterstedt); 18 — Dryope flaveola (Fabricius). Рис. 13–18. Гениталии Dryomyzidae, сбоку: 13 — Dryomyza anilis Fallén; 14 — Dryomyza caucasica (Ozerov); 15 — Dryomyza ecalcarata Kurahashi; 16 — Dryomyza formosa (Wiedemann); 17 — Dryope decrepita (Zetterstedt); 18 — Dryope flaveola (Fabricius).

Figs 23–28. Genitalia of Dryomyzidae, dorsal view: 23 — Dryomyza anilis Fallén; 24 — Dryomyza caucasica (Ozerov); 25 — Dryomyza ecalcarata Kurahashi; 26 — Dryomyza formosa (Wiedemann); 27 — Dryope decrepita (Zetterstedt); 28 — Dryope flaveola (Fabricius). Рис. 23–28. Гениталии Dryomyzidae, сверху: 23 — Dryomy- za anilis Fallén; 24 — Dryomyza caucasica (Ozerov); 25 — Dryo- myza ecalcarata Kurahashi; 26 — Dryomyza formosa (Wiede- mann); 27 — Dryope decrepita (Zetterstedt); 28 — Dryope flaveo- la (Fabricius).

Figs 29–33. Genitalia of Dryomyzidae, dorsal view (29, 30, 32, 33) and posterior view (31): 29 — Oedoparena minor Suwa; 30, 31 — Paradryomyza setosa (Bigot); 32 — Paradryomyza spinigera Ozerov; 33 — Pseudoneuroctena senilis (Zetterstedt). 29 — after Ozerov & Krivosheina, 2021, fig. 6. Рис. 29–33. Гениталии Dryomyzidae, сверху (29, 30, 32, 33) и сЗади (31): 29 — Oedoparena minor Suwa; 30, 31 — Paradryo- myza setosa (Bigot); 32 — Paradryomyza spinigera Ozerov; 33 — Pseudoneuroctena senilis (Zetterstedt). 29 — по Ozerov & Kri- vosheina, 2021, fig. 6.

Figs 34–43. Aedeagus of Dryomyzidae, lateral view: 34 — Dryomyza anilis Fallén; 35 — Dryomyza caucasica (Ozerov); 36 — Dryomyza ecalcarata Kurahashi; 37 — Dryomyza formosa (Wiedemann); 38 — Dryope decrepita (Zetterstedt); 39 — Dryope flaveola (Fabricius); 40 — Oedoparena minor Suwa; 41 — Paradryomyza setosa (Bigot); 42 — Paradryomyza spinigera Ozerov; 43 — Pseudoneuroctena senilis (Zetterstedt). 40 — after Ozerov & Krivosheina, 2021, fig. 8. Рис. 34–43. Эдеагус Dryomyzidae, сбоку: 34 — Dryomyza anilis Fallén; 35 — Dryomyza caucasica (Ozerov); 36 — Dryomyza ecalcarata Kurahashi; 37 — Dryomyza formosa (Wiedemann); 38 — Dryope decrepita (Zetterstedt); 39 — Dryope flaveola (Fabricius); 40 — Oedoparena minor Suwa; 41 — Paradryomyza setosa (Bigot); 42 — Paradryomyza spinigera Ozerov; 43 — Pseudoneuroctena senilis (Zetterstedt). 40 — по Ozerov & Krivosheina, 2021, fig. 8.