Ophiomyia tschirnhausi, Černý, 2011

Černý, Miloš, 2011, Agromyzidae (Diptera) in the vicinity of the Kerkini Lake with descriptions of eight new species from Greece, Acta Entomologica Musei Nationalis Pragae 51 (1), pp. 299-347 : 318-320

Ophiomyia tschirnhausi sp. nov.

( Figs. 51–57 )

Type locality. Greece, Macedonia, Serron, Kerkini Village, 41°12′48.7′′N 23°06′11.9′′E, 40 m a.s.l.

Type material. HOLOTYPE: J, ‘ Greece: Kerkini , 2007 / 41.12.48,7/23.06.11,9E / Pumping station, 6.-12.vi. / G. Ramel leg., 40 m, MT // Project Kerkini / the biodiversity study of / Wetland Kerkini / G. Ramel leg. // Ophiomyia tschirnhausi sp. nov. / det. M. Černý 2010 // Holotype’ ( NMPC). Loc. No. 11. Terminalia dissected, mounted on the same pin (medium: glycerine and gum resin).

Description (male, holotype). Head black, ocellar triangle, frontal vitta black, matt; fronto-orbital plate brown; gena and parafacialia brown. Antenna black, palpi blackish brown. Thorax dark, scutum and scutellum shining black. Notopleuron and postpronotal lobe ochre brown. Anepisternum blackish brown, along upper and hind margin only narrowly bordered with yellow. Wing hyaline, base of wing ochre, veins brown; calypters grey, their margin and fringe brownish black. Knob of halteres brown, stem basally ochre brown. Legs brownish black. Abdomen blackish brown.

Head ( Figs. 52–53 ). Frons broad, about 1.8 as wide as eye at level of anterior ocellus, slightly tapering toward lunule. Fronto-orbital plate inconspicuous, not prominent above level of frons, narrow, each about 0.17 width of frons, not visible in front of eye in profile. Ocellar triangle large, reaching with its anterior tip to lower ors setae and continuing as deep groove to upper margin of lunule. Gena very narrow. Antennae separated by conspicuous facial keel being swollen and as broad as scape. Two long reclinate ors setae, 2–3 inclinate and slightly reclinate ori setae present, lower seta shorter and thin. Orbital setulae short and sparse, reclinate. Lunule very narrow, flat. First flagellomere slightly longer than high, densely covered with hairs on anterior margin, hairs longer than thickened aristal base is broad. Arista only 0.6 times as long as eye height, short setulose. Vibrissal corner forming angle of approximate 60°, vibrissal fasciculus long, with upward curved tip. Eye totally bare. Epistoma lacking.

Scutum with 0+2 dc setae (additional setulae on scutum and scutellum damaged). Scutellum broader than long, index 1.42. All usual setae present: 1 oc, 1 pvt, 1 vte, 1 vti, 1 ppl, 1 hu, 1 mspl, 1 stpl, 1 sa, 1 prs, 1 bs, 1 as.

Wing ( Fig. 51 ) 1.89 mm long, veins M 1 and CuA 1 weaker than R 2+3 and R 4+5. Costa reaching tip of vein R 4+5, relation of costal sections 2–4 as 3.89: 0.83: 1.00. Last section of CuA 1 1.60 times as long as last but one section. Both cross veins markedly approximated, distance between cross veins R-M and DM-Cu equal 0.35 length of DM-Cu.

Legs. Mid tibiae with 2–3 short and strong pd setae.

Abdomen oval, 6 th tergite 1.4 times as long as 5 th tergite, 6 th sternite as long as 6 th tergite. Male terminalia ( Figs. 54–57 ): epandrium broader than high in relation 1.40: 1.00. Cerci ( Fig. 56 ) short, reaching 0.44 height of epandrium. Surstyli with group of numerous short strong spines on inner side. Phallus ( Figs. 54–55 ) about 0.6 length of phallapodeme, distiphallus consisting of asymmetrical vesicle bearing typical surface structure. Basiphallus 1.37 times longer than distiphallus, with broad base and differently long and broad arms. Hypandrium ( Fig. 57 ) V-shaped.

Female. Unknown.

Body length 2.07 mm.

Differential diagnosis. Ophiomyia tschirnhausi sp. nov. resembles O. ranunculicauli Hering, 1949 , both species displaying very similar external characters but the new species is smaller, its wing length is only 1.89 mm, costa reaching tip of vein R 4+5, and the last section of CuA 1 is longer (1.60 as long as the last but one section). Differences in the male terminalia of both species are conspicuous.

Etymology. This species is named in honour of Michael von Tschirnhaus, a distinguished German dipterist, expert on world Agromyzidae and Chloropidae .

Bionomics. Unknown.

Distribution. Greece ( Macedonia): Kerkini. Hitherto known only from the type locality.

Figures

Figs. 51–57. Ophiomyia tschirnhausi sp. nov.,J. 51 – wing; 52 – head in frontal view; 53 – the same in lateral view; 54 – phallus in ventral view; 55 – the same in lateral view; 56 – epandrium, surstylus and cercus in caudal view; 57 – hypandrium. Scales = 0.1 mm (Figs. 54–57), 0.5 mm (Figs. 52, 53) and 1 mm (Fig. 51).