Ecology Research Group
Institute of Zoology and Anthropology
The Allium ursinum food web
Life cycle of Cheilosia fasciata
Adult Cheilosia fasciata emerge
Oviposition starts soon after copulation,
usually in the second half of April.
Eggs are laid singly on the undersides of the Allium leaves.
This is an L3-larva inside its mine. Larval development takes some four to six weeks, and some 50 square centimetres are mined during this period.
The larvae leave their mines for pupariation in the soil (End of May/early June). The rest of the year is spent inside the puparium until adults emerge in the next spring.