Greenomyia borealis (Winnertz, 1863)

Kurina, Olavi, Hedmark, Kjell, Karstroem, Mats & Kjaerandsen, Jostein, 2011, Review of the European Greenomyia Brunetti (Diptera, Mycetophilidae) with new descriptions of females, ZooKeys 77, pp. 31-50 : 35-38

Greenomyia borealis (Winnertz, 1863) Figures 261014182226

Material studied:

SWEDEN. 2♂♂, SK, Lund and Lund, Abusa, undated (J. W. Zetterstedt leg.) [MZLU, on pins]; 1♀, ÖG, Valdemarsvik, Snäckevarp ( Snäckehvarps gästgifvaregård 1 km NE Gryt), 11 Aug 1825 (C. Stenhammar leg.) [MZLU, on pin]; 1♀, Lu. Jokkmokk, Vuollerim, in a garden, 105 m.a.s.l., Malaise trap, 8.-15.VIII.2008 (K. Hedmark and M. Karström leg.) [IZBE, mounted from alcohol]; ESTONIA. 1♂, Nigula NR, Haavapeaksi, sweeping, 12.VII.1998 (O. Kurina leg.) [IZBE, on pin]; 1♀, Tartu Marja 14, on window 21.VIII.2008 (O. Kurina leg.) [IZBE, on pin]. GREECE. 1♂ 2♀♀, Central Macedonia, Kerkini lakes area, village Vironia, Ramna site, 41°17'42.5"N, 023°11'33.1"E, 750 m.a.s.l., Malaise trap, 7.-13.VII.2008 (G. Ramel leg.) [IZBE, mounted from alcohol]; 1♂, Central Macedonia, Kerkini lakes area, village Vironia, Beabies site, 41°19'15.4"N, 023°13'39.6"E, 1150 m.a.s.l., Malaise trap, 21.-27.VII.2008 (G. Ramel leg.) [IZBE, mounted from alcohol]; 1♂ Central Macedonia, Kerkini lakes area, village Neo Petritsi, Midway site, 41°18'49.8"N, 023°16'35.6"E, 750 m.a.s.l., Malaise trap, 23.-29.VI.2008 (G. Ramel leg.) [IZBE, mounted from alcohol]. KAZAKHSTAN. 1♀, Alma-Ata, 13.-16.VI. 1824 (Kuzin leg.) [ZIN, on pin].

Diagnostic characters.

Female. Thorax brown to blackish. Abdomen entirely brown or first two segments slightly lighter. Legs pale to yellow, except cx2 and cx3 with dark markings basally and apically, all trochanters brown and f3 brown, with lateral parts lighter to yellow. Tibiae with dense brown setae. Scape and pedicel dark yellow, flagellomeres brown. Mouthparts yellow. Apical palpal segment 5.0-5.4 (n=4) times as long as penultimate segment. Wing with broad preapical brownish band, reaching hind margin but gradually paler. C terminating distinctly before apex of wing, R5 straight to slightly sinuate (Fig 10). M2 and CuA1 not reaching wing margin, CuA1 basally obsolete or very weak. Terminalia brown; cercus yellow, two-segmented, apical segment small and partly fused with basal segment. Gonapophysis IX well sclerotized apically, visible in lateral view and with well developed narrow apical incision. Tergite VIII equal in size but slightly wider than tergite IX. Sternite VIII with medial incision apically and well emarginated basally.

Male. Coloration and other non-terminal characters including palpi similar to female. Apical palpal segment is 4.7-5.7 (n=4) times as long as penultimate segment.

Remarks.

While studying the Swedish specimen from Vuollerim, it ran by the first attempt using the key by Zaitzev (1994) to Neoclastobasis because of the extra long last palpal segment and M2 and CuA1 not reaching the wing margin. The colouration of the studied specimen is, however, different and female terminalia lack strong spines on sternite VIII, being typical to all of the described Neoclastobasis species ( Zaitzev 1982; JK and OK pers. obs. of Neoclastobasis kamijoi : 5♂♂ 2♀♀, South Korea, Sanan, I-li-Keumsan, [MNHN], 1♂ 3♀♀, Japan, Hokkaido, Sapporo [EIHU, MZLU]; Neoclastobasis draskovicae : paratypes, 1♂ 1♀ in MNHN, see Matile 1978). The discovery of a Greenomyia female, with similar size and coloration as the male of Greenomyia borealis in the same Malaise trap sample from northern Greece (Kerkini Lake area) allowed a safe association of the sexes. The females from Sweden, Estonia and Kazakhstan were further found to be conspecific with the Greek material of both sexes. According to Chandler et al. (2006), a male specimen from Greek mainland (Vikos Aoos National Park) has mainly yellow coxae, while other European specimens of Greenomyia borealis have mainly dark coxae. This may represent an intraspecific variation, however, all specimens studied during the current investigation have coxae whitish yellow. The above-mentioned Estonian specimen represents the first record of Greenomyia borealis from the country. The female specimen from Vuollerim was collected in the same garden as Greenomyia stackelbergi . Greenomyia borealis was previously known only with two 19th century findings from southern Sweden.