Ephydra riparia Fallén, 1813

Krivosheina, M. G. & Ozerov, A. L., 2021, A review of the shore-fly genus Ephydra Fallén, 1810 (Diptera: Ephydridae) of Russia, Russian Entomological Journal 30 (3), pp. 345-360 : 355-357

Ephydra riparia Fallén, 1813

Figs 4 , 5 , 13 , 22 , 31 , 40 .

riparia Fallén, 1813: 246 ( Ephydra ). Type-locality: Sweden. albula Meigen, 1830: 115 ( Ephydra ). Type-locality: not given

(? Germany).

salina von Heyden, 1843: 228 ( Ephydra ). Type-locality: Creuznach, Rhein-Preussen ( Germany).

halophila von Heyden, 1844: 203 ( Coenia ). Type-locality: Nauheim ( Germany).

salinae Zetterstedt, 1846: 1812 ( Ephydra ). Type-locality: “Gryphia” [= Pomerania: Gryfice] ( Poland).

strenzkei Giordani Soika, 1960: 456 ( Ephydra ). Type-locality: Wilhelmshaven ( Germany).

MATERIAL. Amur Oblast: Zeya (54.087ºN 126.871ºE), 20. VI .1978 , A. Shatalkin (1 ♂, ZMUM); Chukotka: Anadyr (64.725ºN 177.471ºE), swampy lake shore, 13. VIII .1966 , K. Gorodkov (22 ♂♂, 12 ♀♀, ZISP); Goryachie klyuchi (54.512ºN 159.973ºE), on the surface of a puddle, water t37 o, air t9 o, 7. VIII .1963 , K. Gorodkov (23 ♂♂, ZISP); Crimea: Dzhankoy (45.719ºN 34.407ºE), 19. V .1963 , K. Gorodkov (2 ♂♂, ZISP); Lake Koyanskoe (45.025ºN 36.111ºE), reared, 2008, A. Przhiboro (1 ♂, ZISP); Bashkiria: Muraptal Distr., Kazlair saltish (52.455°N 55.76°E), K. Tomkovich (1 ♂, ZMUM); Buryatia: Kyakhta (50.353ºN 106.448ºE), waterlogged meadow, 25. VIII .1958 , K. Gorodkov (1 ♂, ZISP); 15 km E of Kyakhta , solonchak, (50.337ºN 106.700ºE), 24.VII.2012, A. Medvedev (4 ♂♂, ZMUM); Kamchatka Krai: Apuka (60.444ºN 169.601ºE), an island at the mouth of the Apuka River , on rotten puddles , 7. VIII .1959 , K. Gorodkov (14 ♂♂, ZISP); Na-lychevo (53.507ºN 158.756ºE), 2.X.2009, L. Lobkova (1♂, ZMUM); Petropavlovsk-Kamchatsky (53.013ºN 158.657ºE) , 28. V .1908 , A. Derzhavin (2 ♂♂, ZISP); Krasnodar Krai: Golubitskaya (45.323ºN 37.274ºE), 25. VI .1990 , E. Narchuk, (1 ♂, ZISP); Gelendzhik distr., Krinitsa env. (44.395°N 38.341°E), River Pshaga , 6–13.IX.2009, K. Tomkovich (1 ♂, ZMUM); Leningrad Oblast: Leningrad [= Saint Petersburg] env. (59.878ºN 29.069ºE), 11 and 13.VII.1984 , 12. VIII .1984 , M. Krivosheina (5 ♂♂, ZMUM); Petrograd [= Saint Petersburg (59.924ºN 30.326ºE)], 13.IV.1919, A. Stackelberg (1 ♀, ZISP); Moscow Oblast: Dmitrov env. (56.316ºN 37.725ºE) , 2.IX.2006, N. Vikhrev (1 ♂, 1 ♀, ZMUM); North Ossetia – Alania: Sukhotskoe (43.674ºN 44.442ºE), 30 km SW of Mozdok , 3. VIII .1988 , A. Ozerov (1 ♂, ZMUM); Omsk Oblast: Cherlak-Krasny Oktyabr’ env. (54.133ºN 75.011ºE), 30. V .2009 , O. Kosterin (1 ♀, ZMUM); Omsk, Solenoe Lake (54.885ºN 73.347ºE), 3.IV. and 30. VI.2008, 29. VI .2013 , O. Kosterin (2 ♂♂, 3 ♀♀, ZMUM); Omsk, Irtysh River (54.99°N 73.32°E), 22.VII.2011, O. Kosterin (1 ♀, ZMUM); Omsk: River Irtysh left floodland (54.952ºN 73.355ºE), reeds and salinas , 11.IV.2008, O. Kosterin (1 ♂, ZMUM); Primorsky Krai: 40 km SO of Ussuriysk (43.634ºN 132.222ºE) , 5.VIII.1983, 6.VIII.1983, 13.VIII.1983, 18.VII.1984, 12.VII.1985, A. Ozerov (22 ♂♂, ZMUM); Vozdvizhenka (43.900ºN 131.943ºE), garden , 26.X.1968, K. Gorodkov (1 ♂, ZISP); Rostov Oblast: Marga-ritovka [=Margaritovo] (46.929ºN 38.872ºE) , 22. V .1953 , B. Mamaev (1 ♂, ZMUM); Yakutia: Lake Elegin, Amgino-Yakutskiy Trakt , (ca. 61.305ºN 131.327ºE), Yakutsk Expedition RAS, 18. VIII.1925, V. Bianki (1 ♂, ZISP) .

ADDITIONAL MATERIAL. Kazakhstan: Chesnokovo env. (51.153ºN 50.453ºE), Derkol River, 26. VIII .2012 , K. Tomkovich (1 ♂, ZMUM); Ukraine: Alyoshki (46.621ºN 32.716ºE), lower Dnieper , sweeping, 18. VI .1926 , L. Zimin (1 ♂, ZISP); Odessa, Kuyal’nitskiy Bay (ca. 46.565ºN 30.717ºE), 16.IX.1938, B. Rohdendorf (1 ♂, ZMUM); Odessa env. (ca. 46.466ºN 30.719ºE), salt puddle near oil tank , 8. V .1926 , L. Zimin (1 ♂, ZMUM); Golaya Pristan’ (46.524ºN 32.521ºE), 18.VII.1977, E. Klechkovskiy (1 ♂, ZMUM); Chernomorskiy Nature Reserve (ca. 46.314ºN 31.890ºE), cordon Geroyskiy , 6.VII.1977, E. Klechkovskiy (3 ♂♂, ZMUM); Zheleznyy port env. (46.124ºN 32.287º1E), Tendrovskiy Bay , 25.VII.1977, E. Klechkovskiy (1 ♂, ZMUM); Rybach’e env. (44.772ºN 34.598ºE), Dnepro-Bugskiy Bay , 13.VII.1977, E. Klechkovskiy (1 ♂, ZMUM) .

DESCRIPTION. Head brownish-bronze or greyish pollinose except metallic shining frontal vitta and upper face, with dark greenish or bluish tinge; fronto-orbital plate brownish pollinose. 3 long fronto-orbital setae, anterior interfrontal seta 2 times thinner and shorter than ocellar. Postocular setae thin and short.

36 37

39 40

42

Palpus yellow to dark brown, brownish pollinose. Antenna blackish, greyish dusted; arista pectinate on dorsal surface on basal 2/3 or more. Gena greyish dusted, parafacial bronze dusted.

Thorax black, densely brown pollinose. Scutum subshining. Acrostichals setulose in many irregular rows, intra-alars absent ( Fig. 4 ).

Legs. Femora black densely grey dusted or yellowish grey pollinose basally, tibia and tarsi of all legs yellowish, tarsi sometimes darkened apically.

Abdomen black, subshining, grey pollinose. Tergite 5 about 2 times as long as tergite 4. Male genitalia large, as long as tergites 4+5. Epandrium oval in dorsal (posterior) view ( Fig. 31 ); surstylus widened apically. Epandrium parallel-sided in lateral view ( Fig. 40 ); surstylus broad and narrowed apically, with acute tip. Aedeagus with broad apex in lateral view ( Fig. 13 ). Gonite stout at base in lateral view, with curved and slender distal part ( Fig. 22 ).

NOTE. The species has variable coloration and it is not easy to determine it from external characters. However it is the only species with surstyli broad and significantly widened apically in dorsal view. Lateral view of surstylus resembles E. japonica , but the apex acute, not rounded.

DISRTIBUTION. Russia: Amur Oblast, Chukotka, Crimea (incl. Przhiboro & Shadrin [2012]), Bashkiria, Bu-ryatia, Kamchatka Krai, Krasnodar Krai, Leningrad Oblast, Moscow Oblast, North Ossetia – Alania, Omsk Oblast, Primorsky Krai, Rostov Oblast, Yakutia. — Palearctic: Afghanistan, Austria, Azores, Belgium, Bulgaria, Canary Islands, China (Nei Mongol), Czech Republic, Denmark, Estonia, Finland, France, Germany, Great Britain, Hungary, Madeira Islands, Mongolia, Ne-therlands, Norway, Poland, Romania, Sweden, Tunisia, Ukraine [ Mathis & Zatwarnicki, 1995]; Kazakhstan (first record); Nearctic: Canada, United States [ Mathis, Zatwarnicki, 1995].

Figures

Figs 1–4. Head, lateral view (1, 2) and scutum (3, 4) of Ephydra spp.: 1, 3 — E. glauca Meigen; 2 — E. sholtzi Becker; 4 — E. riparia Fallén. Рис. 1–4. Голова, сбоку (1, 2) и среднеспинка (3, 4) Ephydra spp.: 1, 3 — E. glauca Meigen; 2 — E. sholtzi Becker; 4 — E. riparia Fallén.

Figs 5–6. Wing of Ephydra riparia Fallén (5) and antenna of Ephydra pseudomurina Krivosheina, lateral view (6). Рис. 5–6. Крыло Ephydra riparia Fallén (5) и усик Ephydra pseudomurina Krivosheina, сбоку (6).

Figs 7–15. Aedeagus of Ephydra spp., lateral view: 7 — E. afghanica Dahl; 8 — E. attica Becker; 9 — E. glauca Meigen; 10 — E. japonica Miyagi; 11 — E. macellaria Egger; 12 — E. pseudomurina Krivosheina; 13 — E. riparia Fallén; 14 — E. sholtzi Becker; 15 — E. villosa sp.n. Рис. 7–15. Эдеагус Ephydra spp., сбоку: 7 — E. afghanica Dahl; 8 — E. attica Becker; 9 — E. glauca Meigen; 10 — E. japonica Miyagi; 11 — E. macellaria Egger; 12 — E. pseudomurina Krivosheina; 13 — E. riparia Fallén; 14 — E. sholtzi Becker; 15 — E. villosa sp.n.

Figs 16–24. Gonite of Ephydra spp., lateral view: 16 — E. afghanica Dahl; 17 — E. attica Becker; 18 — E. glauca Meigen; 19 — E. japonica Miyagi; 20 — E. macellaria Egger; 21 — E. pseudomurina Krivosheina; 22 — E. riparia Fallén; 23 — E. sholtzi Becker; 24 — E. villosa sp.n. Рис. 16–24. Гонит Ephydra spp., сбоку: 16 — E. afghanica Dahl; 17 — E. attica Becker; 18 — E. glauca Meigen; 19 — E. japonica Miyagi; 20 — E. macellaria Egger; 21 — E. pseudomurina Krivosheina; 22 — E. riparia Fallén; 23 — E. sholtzi Becker; 24 — E. villosa sp.n.

Figs 31–33. Epandrium and surstyli of Ephydra spp., dorsal view: 31 — E. riparia Fallén; 32 — E. sholtzi Becker; 33 — E. villosa sp.n. Рис. 31–33. Эпандриум и сурстили Ephydra spp., сверху: 31 — E. riparia Fallén; 32 — E. sholtzi Becker; 33 — E. villosa sp.n.

Figs 40–42. Epandrium and surstyli of Ephydra spp., lateral view: 40 — E. riparia Fallén; 41 — E. sholtzi Becker; 42 — E. villosa sp.n. Рис. 40–42. Эпандриум и сурстили Ephydra spp., сбоку: 40 — E. riparia Fallén; 41 — E. sholtzi Becker; 42 — E. villosa sp.n.