species

Khaghaninia, S., Kazerani, F. & Hauser, M., 2015, The Genera Nemotelus And Oxycera (Diptera, Stratiomyidae) In The Arasbaran Forests, Vestnik Zoologii 49 (5), pp. 401-406 : 402

Key to studied species 1

1. Scutellum unarmed, without marginal spines; head almost with conical facial projection ( fig. 1 ). ......... .................................................................................................................................... Nemotelus Geoffroy ........ 2

— Scutellum with 2 marginal spines; head without conical facial projection ( fig. 2 ). ... Oxycera Meigen ... 6

2. Face short, rounded; rostellum practically absent under antenna with only small callus); female: abdomen black, 2–4 tergites with white triangular spot in the middle; male: 1rd tergite black, 2–4 tergites white, 5th tergite black with 2 white spots, male genitalia as ( fig. 1 , g–h). .................................................... .............................................................................................................. N. rudifranci (Berezovsky et Nartshuk)

— Face extended anteriorly in to the rostellum ( fig. 1 , f). ................................................................................. 3

3. Distance from antennal base to end of rostellum less than distance from antennal base to commencement of narrow part of frons ( fig. 1 , f). ............................................................................................................ 4

— Distance from antennal base to end of rostellum equal to or greater than distance from antennal base to commencement of narrow part of frons ( fig. 1 , b).........................................................................................5

4. Abdomen entirely black except margin of tergites with narrow yellow strip ( fig. 1 , a). ............................. .................................................................................................................................................. N. argentifer Loew

— Abdomen with different coloration, male abdomen white except 5th tergite, rostellum equal in length to antenna excluding arista ( fig. 1 , e–f). .............................................................. N. pantherinus (Linnaeus)

5. Distance from antennal base to end of rostellum greater than distance from antennal base to commencement of narrow part of frons, vein R4 absent; female: face and body entirely metallic green-black ( fig. 1 , b). ................................................................................................................................. N. nigrinus Fallén

— Distance from antennal base to end of rostellum more equal to distance from antennal base to commencement of narrow part of frons, vein R4 present; male abdomen mostly white;, genitalia as figs; Female: abdomen black with white triangular spots in the middle ( fig. 1 , c–d). ... N. notatus Zetterstedt

6. Green FLies with three longitudinal black stripes on mesonotum and black narrow transverse bands on abdomen ( fig. 2 , f). ...................................................................................................... O. trilineata (Linnaeus)

— Predominantly black species with yellow pattern...........................................................................................7

7. Yellow spots on abdomen connected along lateral tergites ( fig 2 , d–e). ............................ O. notata Loew

— Yellow spots on abdomen not connected along lateral tergites. .................................................................. 8

8. Legs entirely yellow; longitudinal stripes on mesonotum not connected with humeral spots; lateral spots on abdomen in 3 pairs on 2–4 tergites and oblique and directed forward and toward center ( fig. 2 , a). .... ................................................................................................................................................... O. fallenii Staeger

— Femora 1 and 2 in basal half and anterior tarsi black; longitudinal stripes on mesonotum connected with humeral spots; lateral spots on abdomen in 3 pairs on 2–4 tergites and oblique; male genitalia as ( fig. 2 , b–c). .......................................................................................................................... O. meigenii Staeger

Figures

Fig. 1. Nemotelus argentifer: female dorsal view (a); Nemotelus nigrinus, female, lateral (b); Nemotelus notatus: female, dorsal view (c), male, lateral view (d); Nemotelus pantherinus: male, lateral view (e), lateral view of the head (f); Nemotelus rudifranci: lateral view of a female (g), lateral view of a male (h).

Fig. 2. Oxycera fallenii: female lateral view (a); Oxycera meigenii: male dorsal view (b), female dorsal view (c); Oxycera notata: male dorsal view (d), female lateral view (e), Oxycera trilineata: female dorsal view (f).