Palaeontinidae Handlirsch, 1906

Wang, Ying & Ren, Dong, 2007, Revision of the genus Suljuktocossus Becker-Migdisova, 1949 (Hemiptera, Palaeontinidae), with description of a new species from Daohugou, Inner Mongolia, China, Zootaxa 1576 (1), pp. 57-62 : 58

Family Palaeontinidae Handlirsch, 1906 = Cicadomorphidae Evans, 1956 Genus Suljuktocossus Becker-Migdisova, 1949

Type species: Suljuktocossus prosboloides Becker-Migdisova, 1949 .

Revised diagnosis: Forewing triangular with blurry CP and nodal line. Sc arising from basal single and parallel R before fusing with R 1. M 4-branched. CuA curved at basal, connected with M by a short crossvein mcua, and dividing into CuA 1 and CuA 2. Crossvein m 4 -cua curved, and connected with CuA at the dividing point. CuP slightly curved before ending to margin. A 2-branched. A 2 with 2 branches and the longer branch fused with A 1 a little before distal end of clavus.

Hind wing with obvious indentation. Sc coalesced with R for a short distance and upwards single to indentation. M 4-branched. M 1 separated from M basally, and fused with Rs for a long interval. The stem of M 3+4 long and a little curved, M 3+4 bifurcating in to M 3 and M 4 distad of CuA dividing point. CuA connected with M 3+4 by a short crossvein. CuP simple. A with 2 branches.

Species included: Three species: S. prosboloides, Becker-Migdisova, 1949 , S. chifengensis Wang, Zhang and Fang, 2007 and S. yinae sp. nov.

Remarks: Until now, 14 genera and 27 species assigned to the family Palaeontinidae have been reported from Daohugou, Inner Mongolia in China. The genus Suljuktocossus Becker-Migdisova, 1949 was erected just based on a single incomplete forewing. The material described here consists of complete forewings and hind wings with part and counterpart.

Among these genera, Suljuktocossus Becker-Migdisova, 1904 is similar to Pseudocossus Martynov, 1931 in forewing, but differs from the latter with blurry CP and nodal line, Sc without branches and the longer branch of A 2 fused with A 1 before distal end of clavus.

It differs from Gansucossus (Hong, 1983) Wang, Zhang and Fang, 2006 in hind wing with stem M long and A 1 terminated in anal margin.

Based on hind wings venation (Sc coalesced with R for a short distance and upwards single to indentation, M 1 fused with Rs for a long interval and M 3+4 bifurcating in to M 3 and M 4 distad of CuA dividing point), this genus is quite similar to Shurabocossus Becker-Migdisova, 1949 , but it differs from the latter mainly by the following combination of features: R 3-branched and A 2 short and extended downwards to the anal margin near base.