The first record of the subfamily Buchonomyiinae (Diptera, Chironomidae) from Italy

Mature female pupae and pupal exuviae of Buchonomyia thienemanni were captured from the Taro and Adda rivers in northern Italy in June and July 2002. This is the first record of the subfamily Buchonomyiinae from Italy. The pupae do not substantially differ from those collected in other European localities. New information about the autoecology and geographical distribution of B. thienemanni is given. The species, captured in clean, shallow waters with high oxygen content, is rare in Europe, larvae are known from Ireland only, pupal exuviae from nine countries.