Dicraeus Loew, 1873

Liu, Xiaoyan, Yang, Ding & Nartshuk, Emilia P., 2019, New species and records of Dicraeus Loew, 1873 from China (Diptera: Chloropidae), Zootaxa 4554 (2), pp. 351-370 : 352

Dicraeus Loew, 1873

Dicraeus Loew, 1873: 51 . Type species: Dicraeus obscurus Loew, 1873 (monotypy).

Parastia Pandellé, 1898: 18 . Type species: Oscinis raptus Haliday, 1838 (by designation of Sabrosky, 1964).

Oedesiella Becker, 1910: 146 . Type species: Oedesiella discolor Becker, 1910 (monotypy).

Oxyapium Becker, 1912: 250 . Type species: Oxyapium longinerve Becker, 1912 (monotypy).

Dicraeinus Enderlein, 1936: 186 . Type species: Eutropha ingratus Loew, 1866 (monotypy).

Paroedesiella Enderlein, 1936: 187 (unavailable name).

Paroedesiella Anonymous in Imperial Institute of Entomology, 1937: 394. Type species: Oscinis styriacus Strobl, 1898: 263 (monotypy).

Paroedesiella Sabrosky, 1941: 761 (preoccupied by Anonymous, 1937). Type species: Oscinis styriacus Strobl, 1898 (original designation).

Eudicraeus Nartshuk, 1967: 426 . Type species: Dicraeus rossicus Stackelberg, 1955 (original designation).

Diagnosis. Gena broad, at least 0.5 times as wide as first flagellomere; ocellar setae reclinate, convergent to cruciate (rarely parallel); first flagellomere rounded or somewhat angulate apicodorsally; wing with C usually extending to tip of M 1+2, sometimes ending halfway between R 4+5 and M 1+2; R 2+3 long, second costal sector more than 2.5 times length of third (rarely 2.0–2.5 times length of third); male genitalia usually large, epandrium prominent, semicircular; surstylus developed, much diversified in shape; male cercus absent, reduced or present as a narrow projection; hypandrium closed posteriorly ( Andersson 1977; Kanmiya 1983; Ismay 1984; Barrie & Wheeler 2016).