Alexarasnia Gorochov

Gorochov, Andrej V., 2011, A new, enigmatic family for new genus and species of Polyneoptera from the Upper Permian of Russia, ZooKeys 130, pp. 131-136 : 133-134

publication ID

https://dx.doi.org/10.3897/zookeys.130.1487

persistent identifier

https://treatment.plazi.org/id/89711AF1-E8A9-860E-40C8-E8B251203794

treatment provided by

ZooKeys by Pensoft

scientific name

Alexarasnia Gorochov
status

gen. n.

Genus Alexarasnia Gorochov View in CoL   ZBK gen. n.

Type species.

Alexarasnia rossica sp. n.

Description.

Tegmen (Figs 1, 2) moderately narrow, with parallel Sc, RA, RS, branches of MA and MP+CuA1, and short distal part of CuA2; all areas between longitudinal veins more or less narrow; majority of them with intercalary veins; Sc slightly concave, without branches and with apex situated near middle part of costal edge; R+RA slightly convex, but all longitudinal veins between this vein and CuP neutral; R and MA with proximal bifurcation situated in proximal part of tegmen; RA and RS probably simple (single); MA with only two branches in proximal and middle parts of tegmen; proximal part of MP before anastomosis with CuA1 indistinct; MP+CuA1 with four branches as minimum; CuA2 with two branches forming cell-like structure looking as a result of fusion of their distal parts; CuP concave (area near this vein with distinctly concave fold shown in Fig. 1a by dotted line), oblique and straight, but with small distal part probably looking as a result of its fusion with CuA2; 1A hardly convex, similar to CuP in shape; 2A neutral, looking as a single, oblique, and straight vein (its branches somewhat similar to crossveins); true crossveins simple and sparse.

Included species.

Only the type species.

Etymology.

The genus is named in honor of the famous Russian paleoentomologist Prof. Alexandr P. Rasnitsyn.