Pm 10ad

Figures of the specimens were made using a Leica M205 light microscope with a Leica DFC425 camera. Images were produced using the Leica Application Suite V3.7 and edited using Adobe Photoshop CS6.0 (Adobe Systems). Abdomens were removed from examined specimens and macerated in cold 10% NaOH solution overnight, subsequently rinsed for 30 s with pure water, and stored in glycerin. An Olympus SZX10 microscope was used for dissecting specimens and an Olympus PM-10AD was used for drawing the dissected male genitalia.
Morphological terminology in this work follows Zhang (1990) , but wing venation follows Dworakowska (1993) .
Type specimens of the new species are deposited in the collections of the Entomological Museum, Northwest A&F University, Yangling, China (NWAFU).

The specimens used in this study are deposited in the Entomological Museum,

Northwest A&F University, Yangling, Shaanxi, China

(NWAFU). Male genitalia dissections were carried out as described by Oman (1949) and Knight (1965) . Line diagrams were drawn using Olympus PM-10AD microscope. Photographs were taken with an automontage QImaging Retiga 4000R digital camera (CCD) stereozoom microscope. The body measurements are from apex of vertex to tip of forewing. Terminology follows Zhang (1990) with the following exceptions: wing venation follows Dworakowska (1993) , groups of setae on the subgenital plate follow Southern (1982) , and leg chaetotaxy follows Rakitov (1998) .