Cheilosia rhodiolae Schmid, 2000
One white, elliptic egg is deposited on the leaf, generally at the underside. The larva penetrates the leaf directly from the egg. The first mine is a narrow corridor running towards the leaf tip, that is widened to a blotch. Because the leaves of the hostplant are rather small, the larva needs to mine a considerable number of leaves. Theese are entered by biting an entrance in the underside of the leaf base. Frass as black grains in the mine. Pupation external.
It was shown experimentally that Sedum telephium is not acceptable as a hostplant.
Larvae are full fed in mid August; hibernation as puparium.
distribution within Europe
Austria (Fauna Europaea, 2010). Possibly also Norway, Bulgaria and Slovenia (reports of Ch. semifasciata on Rhodiola).
Extensively described by Schmid (2000a). The main differences with Ch. semifasciata are: mandible with 7-8 teeth (C.s.: 6); abdomen smooth (C.s.: finely hairy) and the rear spiracula, that are fused to one spiracular tube, with 5+5 openings (C.s.: 3+3).
Mountain species; all observations were made above 2000 m.