Melanagromyza

Guglya, Yu. A., 2016, Four New Species Of The Genus Melanagromyza (Diptera, Agromyzidae) From Ukraine, Vestnik Zoologii (Vestn. Zool.) 50 (5), pp. 407-414 : 413-414

Key to males Melanagromyza species known to occur in Ukraine

1. Fronto-orbital setulae only proclinate, thick, in several rows, elongated.................................................... 2

— Fronto-orbital setulae only reclinate or proclinate and reclinate together. ................................................ 3

2. Calypter white, margin and fringe yellow; mesonotum black, shining. ............ rodendorfii Spencer, 1966

— Calypter grey, margin and fringe black; mesonotum blackish-grey, matt. ............. aenea (Meigen, 1830)

3. Frontal carina distinct, flattened ( fig. 19 ). ....................................................................................................... 4

— Frontal carina absent ( fig. 11 ) or crest-shaped ( fig. 1 ). ................................................................................. 7

4. 3 frontal setae and 3 orbital setae, all strong on equal space from each other. .......................................... 5

— 3 frontal setae and 2 orbital setae, on unequal spaces from each other. ..................................................... 6

5. Calypter and fringe whitish-yellow, margin orange; mesonotum strongly green shining (dorsal view); 4 dorsocentral setae: two strong and 2 short and more slender ( fig. 26 ); frontal setae and orbital setae of various length ( figs 19, 20 ). ........................................................................................................... cuprea sp. n.

— Calypter and fringe whitish-grey, margin black; mesonotum black, shining (dorsal view); 2 strong dorsocentral setae; frontal setae and orbital setae equal. ................................................ verbasci Spencer, 1957

6. 2 strong dorsocentral setae, sometimes 2 short additional dorsocentral setae present; calypter and fringe dark grey, margin black; smaller species: wing length <2.2 (2.1) mm, height of head <0.76 (0.7) mm in male and <0.87 (0.75) mm in female. .................................................................... zlobini Pakalniškis, 1997

— 1st dorsocentral setae strong and 2nd dorsocentral seta short and more slender; calypter and fringe beije, margin brown; larger species: wing length> 2.2 (2.3) mm, height of head> 0.77 (0.85) mm in male and> 0.87 (1.0) mm in female. .................................................................................. symphyti Griffiths, 1963

7. Fronto-orbital setulae reclinate and proclinate together ............................................................................... 8

— Fronto-orbital setulae only reclinate. ............................................................................................................ 10

8. 3 frontal setae, 3 orbital setae; space between all fronto-orbital bristles approximately equal; frontal carina absent ( figs 30, 31 )............................................................................................................ pratensis sp. n.

— 2 frontal setae, 2 orbital setae; space between frontal setae 2.0–2.5× as big as spaces between neighbouring 2nd frontal setae and 1st and 2nd orbital setae; frontal carina very narrow, crest-shaped. .............. 9

9. Calypter margin yellowish, darker than calypter and fringle; mesonotum black, with bluish tinge; distiphallus triangular-shaped, elongated and narrowing posteriorly (ventral view); arms of basiphallus not connected by crosspiece (Černy, 2015: fig. 83E). ........................................ aeneoventris (Fallén, 1823)

— Calypter margin white, as calypter and fringe; mesonotum black with greenish-coppery tinge; distiphallus trapezoid-shaped, widening posteriorly (ventral view); arms of basiphallus are connected by crosspiece posteriorly ( figs 3, 4 ). ................................................................................................... trapezoidea sp. n.

10. Anterior margin of distiphallus protuberant (ventral view) ( Guglya, 2012: figs 1, 2 )............................. 11

— Anterior margin of distiphallus flattened, concaved or slit-shaped (ventral view) (Černy, 2015: figs 91E, 95E). .................................................................................................................................................................... 12

11. Larger species: wing length> 2.7 mm; orbit projected above eye in profile more at level of frontal setae; lunula in centre have elongated diamond-shaped hollow; length of basiphallus 1.15× as long as width; mesophallus with parallel margins (ventral view) ( Guglya, 2012: fig. 2 ). ............ pubescens Hendel, 1923

— Smaller species: wing length from <2.4 mm; orbit projected above eye in profile uniformly; length of basiphallus 0.72× as long as width; mesophallus strongly widening anteriorly (ventral view) ( Guglya, 2012: fig. 1 ). ........................................................................................................... provecta (de Meijere, 1910)

12. Slit of anterior margin of distiphallus asymmetrical, very deep and narrow; mesophallus long, curved leftwards (ventral view) (Černy, 2015: fig. 95E). ................................................... cunctans (Meigen, 1830)

— Anterior margin of distiphallus symmetrically concaved, not deep, or anterior margin flattened; mesophallus short, straight (ventral view) (Černy, 2015: fig. 91E, 97E). ........................................................... 13

13. 2 frontal setae, 2 orbital setae, all at equal space from one to another; orbit narrow, slightly shining (frontal view)...................................................................................................................................................... 14

— 2–3 frontal setae, 3 orbital setae, space between neighbouring bristles various; orbit wide, shining (frontal view). ............................................................................................................................................................ 15

14. Both dorsocentral setae strong, but 2nd slightly shorter; anterior margin of distiphallus flattened; arms of basiphallus connected posteriorly by crosspiece; distiphallus wide, its length 1.7× as big as width (Černy, 2015: fig. 91E). ................................................................................................ astragali Spencer, 1976

— 1st dorsocentral seta strong, 2nd dorsocentral seta weak and short; anterior margin of distiphallus concaved; arms of basiphallus not connected posteriorly; distiphallus narrow, its length 2.6× as big as width (Černy, 2015: fig. 97E). ................................................................................................. cuscutae Hering, 1958

15. Calypter and fringe dark grey, margin black; last section of CuA10.66× penultimate; all veins brown; distiphallus with almost parallel lateral margins, uniformly wide, its length 1.9× as big as maximum width; arms of basiphallus not connected by crosspiece posteriorly (ventral view) (Černy, 2015: fig. 113E). ................................................................................................................ submetallescens Spencer, 1966

— Calypter, margin and fringe yellowish; last section of CuA1 0.8× penultimate; Costal vein black, other veins beije; distiphallus strongly narowing posteriorly, wide only in anterior half, its length 1.5–1.6× as big as maximum width; arms of basiphallus connected by crosspiece posteriorly (ventral view)........16

16. Smaller species, wing length from 2.0 mm in male to 2.2 mm in female; very narrow frontal carina presents; mesonotum black, with yellowish-green tinge, strongly shining; fronto-orbital setulae sparse, elongated; orbit projected above eye in profile; mesophallus rounded apically (ventral view) (Černy, 2015: fig. 85E). ............................................................................................................... albocilia Hendel, 1931

— Larger species, wing length from 2.95 mm in male to 3.2 mm in female; frontal carina absent; mesonotum blackish-grey, slightly shining; fronto-orbital setulae thick, in several rows; orbit not projected above eye in profile ( figs 11, 12 ); mesophallus concaved apically ( fig. 13 ). ................. asymmetrica sp. n.

Figures

Figs 19–29. M. cuprea sp. n., holotype: 19, 20 — male head; 21 — phallus, ventral view; 22 — same, lateral view; 23 — epandrium-hypandrium complex; 24 — ejaculatory apodeme; 25 — male wing; 26 — dorsocentral setae; paratype: 27 — spermathecae; 28 — egg guide, left blade; 29 — ventral seminal receptacle. Scale bar 0.1 mm.

Figs 11–18. M. asymmetrica sp. n., holotype: 11, 12 — male head; 13 — phallus, ventral view; 14 — same, lateral view; 15 — epandrium-hypandrium complex and ejaculatory apodeme; 16 — male wing; paratype: 17 — spermatheca; 18 — egg guide, left blade. Scale bar 0.1 mm.

Figs 1–10. M. trapezoidea sp. n., holotype: 1, 2 — male head; 3 — phallus, ventral view; 4 — same, lateral view; 5 — epandrium-hypandrium complex; 6 — ejaculatory apodeme; 7 — male wing; paratype: 8 — spermathecae; 9 — egg guide, left blade; 10 — basiphallus (aberrant). Scale bar 0.1 mm.

Figs 30–38. M. pratensis sp. n., holotype: 30, 31 — male head; 32 — phallus, ventral view; 33 — same, lateral view; 34 — male wing; 35 — epandrium-hypandrium complex; 36 — ejaculatory apodeme; paratype (female terminalia): 37 — spermathecae, VII tergit, VII sternit; 38 — ventral seminal receptacle, egg guide, left blade, proctiger and cerci. Scale bar 0.1 mm.