Carsburgia, Lambkin, Kevin J., 2015

Lambkin, Kevin J., 2015, Revision of the Dysmorphoptilidae with emarginate tegmina (Hemiptera: Auchenorryncha: Cicadomorpha: Prosboloidea) of the Queensland Triassic, Zootaxa 3936 (3), pp. 357-374 : 363-364

Carsburgia gen. nov.

Type species. Carsburgia knezouri sp. nov.

Diagnosis. Tegmen small, less than 7 mm long; somewhat rectangular in shape, margin at apex of RA slightly truncate, at apex of CuA very slightly emarginate, apical lobe scarcely developed; precostal carina and marginal membrane quite distinct; mostly finely punctate, but slightly coarser on clavus and around CuA; strigil not detected in basal costal space; primary fork of R distal to level of clavus ½ length; stem of RA with 1 or 2 costal veinlets; primary fork of RA at level of apex of clavus; RA1 with 2 dichotomous branches; RA2 forked just before apex of RA1, with 2 short branches running to apical margin, at most only slightly curved anteriad; RA2 and RP joined by a crossvein; RP simple; M with 2 branches; M and CuA touching basally ( Fig. 7 ) or joined by a short crossvein ( Fig. 11 ).

Notes. Although lacking the obvious emarginations and resultant apical lobe, the much smaller Carsburgia is venationally quite similar to Mesocixius, albeit with somewhat a reduced number of branches consequent on its smaller size. The slight truncation of the margin at RA and the very slight emargination at CuA at least give some suggestion of an apical lobe ( Fig. 11 ). The small size and particular wing shape as well as the two-branched M are proposed as apomorphies for the genus. The genus name is masculine and honours Allan Carsburg who collected the type specimen.

Figures

FIGURES 6 – 8. Swellings on hind margin of clavus: 6, Mesocixius parvus (Evans), QM F 57793 (mirrored); 7, Carsburgia knezouri gen. et sp. nov., QM F 57797; 8, Dysmorphoptiloides elongata Evans, ACC I. 103 (mirrored).

FIGURES 11 – 12. Carsburgia knezouri gen. et sp. nov., holotype QM F 57795; in Fig. 12 the precostal carina and marginal membrane are indicated by the much thicker marginal line, rather than double lines as in other figures.