Daohugoucossus, Wang, Bo, Zhang, Haichun & Fang, Yan, 2006

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 : 63-64

Daohugoucossus gen. nov.

Type species. Daohugoucossus solutus sp. nov.; by monotypy.

Diagnosis. Hind wing elongate, and sharp apically, length/width ratio 2.0; nodal indentation about midwing; costal area long, length/width ratio about 5.6, maximal width in about basal 1/4; Sc coalesced with R just before R ramification; RA1 branching from RA at the same level of indentation, and terminating in costal margin just beyond indentation; RP fused with M1 for a considerable interval, and terminating in apex; RP, M1 and M2 straight for distal half; M3+4 long, in contact but not coalesced with CuA; CuA bifurcating at the same level of indentation; medial area very narrow; A1 terminating in anal margin.

This genus differs distinctly from all other genera with hind wings preserved within Palaeontinidae in having M3+ 4 in contact, but not coalesced, with CuA, and a very narrow medial area. Furthermore, it differs from Shurabocossus in having a long hind wing with sharp apex, stem M long, and A1 terminating in anal margin; from Plachutella in having M3+4 arising from M2+3+4 and A1 terminating in anal margin; from Fletcheriana in having RP fused with M1 and M3+4 arising from M2+3+4; and from Suljuktaja in having the hind wing comparatively long, Sc coalesced with R for a short distance and terminating in indentation, stem M long, and A1 terminating in the anal margin.

Etymology. The generic name is after the type locality, Daohugou Village.

Type locality and horizon. Middle Jurassic; Daohugou Village, Chifeng City, Inner Mongolia, China.