Notes on the distribution and habitat associations of dolichopodid flies in Yorkshire

摘要

With about 7,000 species world-wide, the Dolichopodidae is a species-rich family of Diptera. There are currently 300 British species, of which 238 have been recorded in Yorkshire. British dolichopodids range in size from 1.5mm to 7.0mm and many of them are metallic-green with slightly laterally-flattened abdomens. Most are thought to be predatory at all stages of life and there is often an affinity with wetland habitats.