Gansucossus luanpingensis ( Hong, 1983 ) Hong, 1983

Wang, Bo, Zhang, Haichun & Fang, Yan, 2006, Gansucossus, a replacement name for Yumenia Hong, 1982 (Insecta, Hemiptera, Palaeontinidae), with description of a new genus, Zootaxa 1268, pp. 59-68 : 62

Gansucossus luanpingensis ( Hong, 1983) comb. nov.

Yumenia luanpingensis Hong, 1983: 50 –51, pl. 12, fig. 5, text­fig. 37. Plachutella luanpingensis ( Hong, 1983) : Ren 1995: 65.

Shurabocossus luanpingensis ( Hong, 1983) : Zhang 1997: 319 –320.

Revised diagnosis. Hind wing elongate with its sharp apex, length/width ratio 1.9; costal area long, length/width ratio 5.5, costal area maximal width in about basal 1/3; crossvein m­cua long and oblique; media area wide.

Age and occurrence. Middle Jurassic Jiulongshan Formation; Luanping, Hebei Province, China.

Remarks. Judging from the photograph of D. luanpingensis ( Hong, 1983, pl. 12, fig. 5), it is obvious that the anal area is folded along PCu and A1 terminates in the anal margin. The length/width ratio of the hind wing is easily changed in the taphonomic process. Therefore, judging from the shapes of the m­cua and media area, it is better to place this species in Gansucossus.