Brief Summary

Read full entry

The species develops 3-4 generations per year depending on the latitude and hibernates as adult. Adults feed on different sugar liquids like nectar of flowers and as well as excretions of Chrysomelidae larvae (Pschorn-Walcher, 1956). Larvae are carnivorous and live in roots of plants (usually grasses) feeding on root aphids. In late summer and autumn, from the end of July through December depending on the latitude of locality, the flies invade people's houses in masses. This phenomenon occurs only in Europe. Enormous swarms of the fly appear usually near high buildings situated separately in vast parks with permanent grass lawns, in buildings of agricultural stations, in astronomic observatories. Some cases are described, when big swarms of the fly appeared as dark cloud near spires of churches or castles in the 19th century. It is noteworthy that swarms of the fly appear periodically in the same buildings. (from Nartshuk, 2000)


Creative Commons Attribution 3.0 (CC BY 3.0)

© Irina Brake

Source: The Diptera Site

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!