Rather slender flies of medium size, 2-6 mm long, usually dark metallic purplish, but sometimes dull black, or brownish to yellowish. Wing hyaline, usually with a dark spot near its tip. (Steyskal 1987)
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
