Abstract: Chyliza bombusae Yang et Wang, sp. n. (fig. 1)Male:Length of body 6-8mm, of wing 5-6mm.Head yellow brown, black at mid-facial plate and interfrontalis, with postvertical bristles and 2 pair vertical bristles. Antenna the two first segments darkish brown, 3rd segment pale yellow, arista 2 times as long as the 3rd antennal segment, distinctly pubescent. Thorax yellowish brown in dorsal surface and with broad dark brown stripe on the middle line, lateral surface dark brown except the lower half of mesopleura, and the upper side of stern-opleura. Scutellum with 6 marginal setae. Legs and halteres pale yellow, wings transparent, with smoky coloured apically and around cross m-m vein and M1+2 veins. Abdomen blackish brown, genitalia of male as shown in the Chinese text.