Coremacera, Rondani, 1856

Key for Palaearctic Coremacera View in CoL

1. Unmistakable species due to characteristic wing pattern with three brown transverse stripes in apical half as in Fig. 1 View Fig . (The larg- er Coremacera View in CoL , body length 8-9 mm, wing 7-7.5 mm. Postpedicel of short-triangular shape. Orbital spots small. Scutum with small dark spots around bases of setulae and with 3 pairs of elongated brown spots along dc rows; dc 0+2, ac 0+1. Legs pale brown. Male f3 with rows of av and pv in apical half, female f3 with 3 strong ventral setae around middle. Uncommon species known from S Europe and S-W Asia.).... amoena Loew View in CoL

— Wing without three brown transverse stripes................................. 2

2. Frontal spots deep black and remarkably large, about 1.5 times longer than distance between frontal setae, both frontal setae inserted from the black area. Disc of scutum with dark spots around bases of setulae. Postpedicel of trapezoid shape, elongate................................... 3

— Dark frontal spots small, much smaller than distance between frontal setae, only anterior frontal seta inserted from the dark area. Disc of scutum without dark spots around setulae. Postpedicel of equilateral triangle shape, short ( Fig. 17 View Figs 16–17 )........... 5

3. Prescutellar ac absent. Costal margin of wing with large subquadrate pale spots; the rest of wing with large subquadrate or subpentagonal pale spots ( Fig. 3 View Fig ). Small, body size 5–5.5 mm Dark spots around scutal setulae small. Central Europe. (Male with femora and tibiae yellow, female with darkened tibiae.). ♂: sternite 6 at ventral part with one finger-like thickening ( Fig. 7 View Figs 6–9 ); surstyli gradually narrowed from base to apex ( Fig. 3 View Fig ).......... fabricii Rozkosny View in CoL

— Prescutellar ac present. Costal margin of wing unicolour brownish; the rest of wing with small numerous rounded pale spots ( Fig. 4 View Fig ). Large, body size 7–8 mm, rarely 6 mm. Dark spots around scutal setulae very distinct ( Fig 4 View Fig ). ♂: sternite 6 at ventral part with three hill-shaped thickenings ( Fig. 6 View Figs 6–9 ); surstyli wide in basal 3/4 and abruptly narrowed at apex ( Fig.4 View Fig )............. 4 marginata Fabricius View in CoL

4. At least femora brown. W Europe and temperate part of E Europe, also Turkey................. m. marginata Fabricius View in CoL

— Femora and tibiae pure yellow. Caucasus with adjacent lowlands and Crimea ........................... pontica Elberg

5. Face with black spot in middle. dc 0+2; ac 0+1. Scutum yellow, with pair of grey submedian vittae (less distinct in male, distinct in female as in Fig. 2 View Fig ) and brown spots (in male 1 pair, in female 2-3 pairs). Wing: costal margin (= cell R2 +3) dark with 3–5 subquadrate pale spots; the rest of wing with a reticulate pattern, but area along vein R4+5 pale-hyaline. ♂: sternite 6 at ventral part with ear-like thickening at apex and two more partly fused trapezoid thickenings ( Fig. 8 View Figs 6–9 ); surstyli gradually narrowed from base to apex ( Fig. 2 View Fig ). ♀: f3 without strong ventral setae. Europe and S-WAsia................. catenata Loew View in CoL

— Face without black spot. dc 0+1; ac absent. Scutum brownish with indistinct narrow vittae. Wing with costal margin (cell R2 +3) mostly pale-hyaline; only in apical 1/3 to 1/4 with 2–3 small grey spots (♂, Fig. 5) or in apical 1/2 with 4–5 small dark spots (♀, Fig. 5). ♂: sternite 6 at ventral part evenly thickened and with pointed apex ( Fig. 9 View Figs 6–9 ); surstyli wider, trapezoid shape (Fig. 5). ♀: f 3 in apical half with strong av and pv setae. Far East.............. ussuriensis Elberg View in CoL