Ipsviciopsis Tillyard, 1922

Lambkin, Kevin J., 2020, Revision of the Ipsviciidae of the Late Triassic of Queensland (Hemiptera Cicadomorpha: Scytinopteroidea), Zootaxa 4860 (4), pp. 503-520 : 513

Ipsviciopsis Tillyard, 1922

Ipsviciopsis Tillyard, 1922: 464 .

Type species. Ipsviciopsis elegans Tillyard, 1922 , by original designation.

Emended diagnosis. Tegmen c. 4 times longer than wide; surface sculpture simple, tuberculate/punctate, fairly coarse basally merging to slightly finer apically; costal margin very broadly convex; basal cell long and narrow, extending beyond midpoint of PCu; R sinuous, closely approximating M just after its separation from M+CuA, the basal R cell therefore of uneven width; three r-m; CuA only slightly angulate at m-cua; base of 1A sinuous.

Description. Tegmen c. 13–16 mm long,; marginal membrane quite widened postero-apically; costal fracture forwardly inclined; bSc variable convex; dSc more strongly developed and placed more anteriorly than in Ipsvicia ; post 1r-m branches of R complex and highly variable, often with numerous cells; M+CuA stem a little variable in length, extending well beyond ½ length of PCu; apical section of CuA directed posterior-apically, straight or slightly concave; clavus extending to c. 0.7 tegmen length. Hind wing unknown.

Notes. The tegmen of Ipsviciopsis is clearly distinguished from Ipsvicia on its narrower shape and consequent less convex costal margin, simpler surface sculpture, longer basal cell, sinuous R and quite differently shaped basal R cell, only slightly angulate CuA, and sinuous base of 1A.