Empis

Çiftçi, Mustafa Cemal, Hasbenli, Abdullah & Canpolat, Derya, 2012, Two new species of Empis (Diptera: Empididae) from Turkey, Zootaxa 3408, pp. 47-53 : 52

Key to Turkish species of the Empis (s.str.)

1 Haltere black......................................................................................... 2

- Haltere pale.......................................................................................... 4

2 Metapleural fan and abdominal hairs pale, anal vein abbreviated, not reaching wing margin. Prothorax with pale hairs.......................................................................................... E. curticornis Collin

- Metapleural fan and abdominal hairs black, anal vein complete. Prothorax with black hairs........................... 3

3 Larger, body 4 mm and grey dusted species. Wings brownish, veins pale brownish; labrum almost 1.5X as long as height of head, dorsocentral bristles multiserial........................................................... E. tristis Loew

- Smaller, body 2.5–3.5 mm, subshinning black species. Wings milky-white, only R1 and R4+5 distinct; labrum shorter slightly longer than height of head, dorsocentral bristles 2-serial......................................... E. caudatula Loew

4 Abdominal hairs black, at least dorsum of abdomen with short black hairs......................................... 5

- Abdominal hairs pale................................................................................. 6

5 Legs subshinning black, metapleural fan composed of black and white bristles; labrum slightly longer than height of head. Male tergum 8 with rounded tubercules at sides, aedeagus short and stout. Female legs with short pennation on posterior four femora and tibiae...................................................................... E. nigripes Fabricius

- Legs yellow, only tarsi darkened, metapleural fan black, labrum 2X longer than height of head. Male tergum 8 simple, aedeagus short and slender. Female posterior four femora strongly pennate on both sides..................... E. pexata Collin

6 Anal vein complete, reaching wing margin; male aedeagus long and slender....................................... 7

- Anal vein abbreviated, disappearing before wing margin; male aedeagus short, enclosed within the lamellae or only tip visible.................................................................................................... 9

7 Scutum completely covered with yellowish-white hairs and bristles including large thoracic bristles, acrostichals 3–4 serial, dorsocentral bristles multiserial......................................................... E. doronicola sp. nov.

- Scutum with black hairs and bristles, acrostichals 2-serial, dorsocentral bristles 2- or 4-serial.......................... 8

8 Metapleural fan black, labrum nearly 1.5X as long as height of head, dorsocentral bristles 2-serial. Male mid tibia ventrally with 4–5 strong bristles, aedeagus longer than length of abdomen, thread-like. Female legs without pennate..................................................................................................... E. acinerea Chvála

- Metapleural fan pale, labrum nearly 2X as long as height of head, dorsocentral bristles 4-serial. Male mid tibia anterodorsally and posterodorsally with 4 rather short bristles, aedeagus shorter than in E. acinerea . Female hind tibia dorsally pennate......................................................................................... E. lepidopus Meigen

9 Coxae and femora yellow, tibiae yellowish at base, tarsi and apical half of tibiae darkened, mostly black. Acrostichals and dorsocentral bristles equally long, labrum 2X as long as height of head. Female unknown............... E. insulata Collin

- Legs brownish-black. Dorsocentral bristles longer than acrostichals, nearly as long as stylus, labrum shorter than 2X as long as height of head. Female legs pennate...................................................................... 10

10 Legs mostly brownish, labrum nearly 2X as long as height of head. Male fore basitarsus with long posterior hairs. Female legs not strongly pennate, mostly with flattened hairs.............................................. E. discrepans Collin

- Legs blackish-brown, labrum 1.5X as long as height of head. Male fore basitarsus with 6–7 posterior bristles. Female posterior four femora strongly pennate on both sides.................................................. E. inopinata Collin