Agromyza macedonica, 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 : 307-309

Agromyza macedonica sp. nov.

( Figs. 4–6 , 15–22 )

Type locality. Greece, Macedonia, Serron, Kerkini Village, 41°12′46.8′′N 23°05′42.9′′E, 40 m a.s.l.

Type material. HOLOTYPE: J, ‘ Greece: Kerkini , 2008 MT / 41.12.46,8N 23.05.42,9E / Cafe Elodia, 14.-20.iv.08 / G. Ramel leg., 40 m // Project Kerkini / the biodiversity study of / Wetland Kerkini / G. Ramel leg. // Agromyza macedonica sp. nov. / det. M. Černý 2010 // Holotype’ ( NMPC). Loc. No. 7. Terminalia dissected, mounted on the same pin (medium: glycerine and gum resin).

Description (male, holotype). Head black, frontal vitta brown, ochre brown near lunule. Ocellar triangle brownish black and fronto-orbital plate matt black, antennae black, antennal cavities brownish black, mouth margin ochre yellow, palpi blackish brown. Gena ochre brown, parafacialia blackish brown. Scutum matt black, scutellum paler, blackish brown, shining. Wing smoky brownish, base of wing and vein brown. Knob of halteres white, stem yellowish white basaly. Calypters grey, margin and fringe pale brown. Legs blackish brown, fore and middle knees paler. Abdomen blackish brown, matt.

Head ( Figs. 4–5 ). Frons broad, about twice as broad as eye at level of anterior ocellus, slightly tapering towards lunule. Ocellar triangle small, conspicuously protruding above level of frons. Fronto-orbital plate narrow, each about 0.11 width of frons, distinctly visible in front of eye in profile, more prominent at bases of antennae. Parafacialia visible only as a narrow ring below eyes, gena highest in posterior part, reaching 0.36 height of eye. A sharp keel (distinct in profile) developed between antennal cavities. First flagellomere slightly longer than high. Arista short, only 0.55 times as long as eye height, thickly setulose. Epistoma lacking. Two long reclinate ors setae, and 2 ori setae present, both inclinate and slightly reclinate. Orbital setulae sparse, reclinate. One weak vi seta and numerous ge setae present.

Scutum with 2+3 dc setae being partly reduced anteriorly, 1 st dc seta slightly longer than acr setulae, 2 nd dc seta only half as long as 5 th dc. Acrostichal setulae in 4 regular rows, rarely reaching to line of 5 th dc, prsc seta only half as long as 5 th dc. One weak ia seta present. All usual setae present: 1 oc, 1 pvt, 1 vte, 1 vti, 1 ppl, 1 hu, 1+1 ntp, 1 mspl, 1 stpl, 1 sa, 1 prs, 1 bs, 1 as.

Wing ( Fig. 6 ) 1.72 mm long, costa ending slightly before tip of R 4+5, relation of costal sections 2–4 as 4.57: 1.39: 1.00, outer cross vein lacking.

Legs. Mid tibia without pd setae.

Abdomen, 5 th and 6 th tergite equally long. Stridulating mechanism ( Fig. 22 ) consisting of weakly sclerotized scales of rectangular shape, narrowed posteriorly. Male terminalia ( Figs. 20–26 ): epandrium indistinctly broader than high in relation 1.12: 1.00. Surstylus ( Fig. 18 ) with 4 strong spines on inner surface. Cerci ( Figs. 17–18 ) long and narrow, almost as long as height of epandrium, ventrally distinctly turned to epandrium. Phallus ( Figs. 15–16 ) about 0.2 length of phallapodeme, symmetrical, distiphallus very slightly pigmented, with short and narrow distal tubules. Hypandrium ( Fig. 19 ) with slender arms and short and curved hypandrial apodeme. Ejaculatory apodeme ( Figs. 20–21 ) minute, with narrow blade, only 0.45 length of phallus, slightly pigmented.

Female. Unknown.

Body length 1.59 mm.

Differential diagnosis. Agromyza macedonica sp. nov. belongs to the orobi species group ( ZLOBIN 2000, 2001b). The male terminalia are similar to other species of this group but some of their details are markedly different. Agromyza paucineura Zlobin, 2001 , known only from south-eastern European Russia, seems to be closely related (DM-Cu cross vein is also absent) but it differs by the following characters: the fronto-orbital plate is dull reddish to entirely black, the frons, the lunule and the gena are dull reddish or yellowish, the antennal segments are yellowish brown; the epistoma is distinct, 0.5–0.8 times as long as the first flagellomere; the gena is deepest posteriorly, 0.4–0.5 times as high as eye; 1+3 dc setae are present; the second costal section is 2.4–3.0 times as long as the third, the third section is 1.0–1.2 times as long as the fourth; each surstylus bears a group of 8–9 short spines on the ventral margin; the structures of the distiphallus complex are quite different.

Etymology. The name of A. macedonica sp. nov. indicates the region ( Macedonia) where the holotype was found.

Bionomics. Unknown.

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

Figures

Figs. 1–6. 1–3 – Agromyza elladanensis sp. nov., J. 1 – wing; 2 – head in frontal view; 3 – the same in lateral view. 4–6 – A. macedonica sp. nov., J. 4 – head in frontal view; 5 – the same in lateral view; 6 – wing. Scales = 0.5 mm (Figs. 2–5) and 1 mm (Figs. 1, 6).

Figs. 15–22. Agromyza macedonica sp. nov., J. 15 – phallus in lateral view; 16 – the same in ventral view; 17 – epandrium, surstylus and cercus in lateral view; 18 – the same in caudal view; 19 – hypandrium; 20 – ejaculatory apodeme in dorsal view; 21 – the same in lateral view; 22 – stridulating mechanism. Scales = 0.1 mm.