The first records of the pictured-winged fly Homalocephala bimaculata (Wahlberg, 1838) (Diptera, Ulidiidae) from Norway

Abstract

The picture-winged fly Homalocephala bimaculata (Wahlberg, 1838) is reported from Norway for the first time bringing to five the number of species of Homalocephala Zetterstedt, 1838 reported from the country. H. bimaculata is recorded from Hvaler, Viken, and Oslo, Oslo, and, based on numerous and scattered records, the species is considered to be under-recorded due to its secretive lifestyle. The species is regarded as native and, based on the many ovipositioning females observed, reproducing successfully. Comments on biology, distribution, habitat, and identification characters are provided. Keywords: Diptera, Ulidiidae, Homalocephala bimaculata, first record, Norway, biology, distribution.