Genus Magnimyiolia Shiraki, 1933

Magnimyiolia Shiraki, 1933: 285 . Type species: Magnimyiolia jozana Shiraki, 1933, by original designation. Agaristina Hering, 1953: 514 . Type species: Agaristina picea Hering, 1953, by original designation.

Diagnosis. This genus differs from other Trypetinae genera by the following combination of characters: 1) head about 1.5 to 2.0 times as high as long; frons nearly horizontal; vertical length of face usually longer than frons or at least twice as long as antennae; face almost perpendicular in profile; 2) head typically with 3 pairs of frontal and 2 pairs of orbital setae; ocellars moderately developed; dorsocentral setae situated well behind a line with postsutural supra-alars; 3) wing hyaline with banded pattern (except in convexifrons Chen); vein R4+5 setose to crossvein R-M or about level with crossvein DM-Cu; lobe of cell bcu relatively short; 4) oviscape long and flat, usually as long as tergites 3–5.

With the addition of 4 new species described below, 13 species are presently known from the Eastern Palaearctic, Oriental and Australasian Regions, 6 of which occur in China. M. tumifrons (Chen, 1948) from China has been moved from this genus to Hemilea Loew and M. fusca (Ito, 1949) from Japan had been regarded as a synonymy of H. tumifrons (Chen) by Wang in 1996 (Wang, 1996). Hence, the above 2 species were excluded from the following key of Magnimyiolia from East Asia. The biology of the genus is unknown.