Valdicossus chesteri, Wang, Bo, Zhang, Haichun & Jarzembowski, Edmund A., 2008

Wang, Bo, Zhang, Haichun & Jarzembowski, Edmund A., 2008, A new genus and species of Palaeontinidae (Insecta: Hemiptera: Cicadomorpha) from the Lower Cretaceous of southern England, Zootaxa 1751, pp. 65-68 : 67-68

Valdicossus chesteri sp. nov.

Fig. 1A–C

Diagnosis. As for genus, as it is the only included species.

Description. Hindwing with apex and posterior margin damaged, length as preserved 14.4 mm, width as preserved 11.8 mm. Costal area wide, length/width ratio 3.4, maximal width in basal 1/3rd. Vein Sc coalesced with vein R basally. Branch Sc separating from vein Sc+RA and ending in costal margin just basad of wing indentation. Vein RA branching into veins RA1 and RA2 at about level of wing indentation. Branch RA1 ending on costal margin just distal of indentation; branch RA2 simple. Vein RP branching from stem R opposite maximal width of costal area, coalescing with vein M1 at about midway between wing base and level of indentation, and then bifurcating a little basal of the level of wing indentation; vein RP +M1 length 2.9 mm. Branches M1, M2 and M3+4 arising from stem M at wing base. Branch M1 curved anteriorly; branch M2 slightly curved; branch M3+4 unbranched and simple. Stem CuA forking into veins CuA1 and CuA2 basal of level of indentation; branches CuA1 and CuA2 straight. Vein CuP slightly curved anteriorly. Vein Pcu simple. Vein A1 absent. Wing membrane infuscate with 2 transverse light fasciae, consisting of geometric light spots near middle of wing.

Etymology. The specific epithet is after Mr Frank Chester, engineer.

Holotype. MNEMG 2008.2 [Co 60], part and counterpart. Deposited in Maidstone Museum & Bentlif Art Gallery, coll. J.B.E. Jarzembowski.

Age and occurrence. Lower Weald Clay (Early Hauterivian), Early Cretaceous; W. dipping reef near low water opposite Beaulieu Road, Cooden, East Sussex, southern England (national grid reference TQ 716 063).

Figures

FIGURE 1. A – C, Valdicossus chesteri gen. et sp. nov. A, Holotype, MNEMG 2008.2 [Co 60], part; B, counterpart of holotype; C, line drawing of holotype. D, Sinopalaeocossus trinervus Wang, Zhang and Fang, 2006, hindwing redrawn from Wang et al. (2006 b). A, B and C to scale.