Key to adults of Lipsothrix species of the western Palaearctic

1. Wing with dark stigma; thorax at least partly darkened on scutum............................................... 4

- Wing without darkened stigma; yellowish species........................................................... 2

2. Femora yellow; wing veins with short, inconspicuous macrotrichia; 2A bare; blackish palps, tarsi and base of 8th sternite of male..................................................................................... remota Walker

- Femora with black apices; veins with long macrotrichia; 2A with some macrotrichia at apex.......................... 3

3. Abdomen with dorsal stripe; male with distal part of 7th and whole of 8th sternites blackish; vein 2A with numerous macrotri- chia towards apex......................................................................... errans Walker.

- Abdomen without dorsal stripe, male with only 8th abdominal sternite darkened; vein 2A with only 3–6 macrotrichia............................................................................................ ecucullata Edwards

4. Wing apex and cross veins clouded............................................................. nobilis Loew

- Wing apex clear...................................................................................... 5

5. Thorax dorsally and abdominal tergites blackish; pleurae and sternites yellow........................ nervosa Edwards

- Thorax and abdomen brownish-black including pleurae and sternites................................ galiciensis n. sp.