13. Ilione Haliday, in Curtis, 1837

(Figs. 9, 30, 57, 66)

Ilione Haliday, 1837: 280 . Type species: Chione communis Robineau-Desvoidy, 1830 (by designation of Thompson and Mathis, 1980) [= Musca albiseta Scopoli, 1763].

Knutsonia Verbeke, 1964: 3 . Type species: Musca albiseta Scopoli, 1763 (by designation of Knutson and Berg, 1967).

Diagnosis. Frons with 2 pairs of orbital setae. Subalar setae present but weak. Wing hyaline without distinct reticulated pattern but with several isolated dark spots; dm-cu bow-shaped.

Remarks. Of the 8 described species, 7 are restricted to the Palearctic Region. The other species, Ilione turcestanica (Hendel, 1903), is known from the Palearctic Region but also extends into the Oriental Region.

Before our study, only I. turcestanica had been recorded from China (Rozkošný & Elberg 1984; Rozkošný 1987). We determined 8 males and 4 females (from Xinjiang) to be I. turcestanica . We also determined 2 males (1 from Xinjiang and the other from Inner Mongolia) to be I. albiseta (Scopoli, 1763) . Xinjiang and Inner Mongolia are both located in the Palearctic Region of China .