Abstract
The following three new species of the genus Macgregoromyia Alexander from China are described: Macgregoromyia ternifoliusa sp. nov., M. flatusa sp. nov. and M. rectangularis sp. nov. A key to the world species of the genus Macgregoromyia is presented. Macgregoromyia was proposed by Alexander (1929) as a genus of the family Tipulidae. It is characterized by the following features: rostrum short, with distinguish nasus; without vertical tubercle; wing with Sc2 usually entering Rj long beyond fork of Rs (but in M. ternifoliusa, at fork of Rs), R1+2 preserved or spur-like or absent entirely, Rs arcuated, usually greatly bent, r-m entering Rs or entering R4+5 slightly beyond fork of Rs, outer half of R4+5 curved backwards, discal cell small, medial cells relatively deep, in some species with macrotrichia (Alexander 1929). It is distributed in the Eastpalaearctic and Oriental Regions with twelve known species (Oosterbroek 2011). Four species are known to occur in China (Oosterbroek 2011). Nothing is known about the immature stages or biology of Macgregoromyia except for resting position of M. perpendicular is; likewise very little is known about the known species.
NSTL