External images For terms see Morphology of Diptera Cheilosia semifasciata has a very low facial knob, (in line with the bottom of the eyes), hairy eyes, dark legs with pale knees and dark antennae.

Males have square grey dust spots each side of tergites 2 to 5.

From Ireland East across mountains of Central Europe, Romania and Bulgaria.

[6][7] Scree slopes, cliffs and rock outcrops up to 2000m.

Adults visit the flowers of Alliaria petiolata, Allium ursinum, Anemone nemorosa, Prunus spinosa, Ranunculus, Salix, Taraxacum and Vaccinium myrtillus flying in March to early June.