Permosialis bayda Aristov et Rasnitsyn, 2022

Aristov, D. S. & Rasnitsyn, A. P., 2022, New and little known species of the genus Permosialis (Insecta: Palaeomanteida: Permosialidae) from the Middle Permian of Russia, Far Eastern Entomologist 467, pp. 17-22 : 21

Permosialis bayda Aristov et Rasnitsyn , sp. n.

https://zoobank.org/NomenclaturalActs/ 0AB6C87F-4B20-4D43-B324-E1DE1ABA7025

Figs 7, 8

MATERIAL. Holotype PIN, No 3701/2, counterpart of forewing; Russia, Kemerovo region, Novokuznetzk district, Baydaevsky coal field, sample 32/1611, core of borehole 1171, depth 506 m; Middle Permian, Urzhumian, Uskat Formation; in Borissiak Paleontological Institute, Russian Academy of Sciences ( PIN RAS).

DIAGNOSIS. Differs from other Permosialis by wing color pattern (dark wing with numerous pale spots) and venationally by very long stalk RS (almost twice as long as RS stalk).

1+2

DESCRIPTION. Wing dark with numerous pale spots placed between main veins and sometimes joined in irregular, mainly transverse belts. SC with three visible, rather short fore branches. RS stalk very short (almost half as long as stalk RS 1+2), not reaching wing midlength, RS fork within distal quarter of wing. M stalk free, M 5 short, oblique, M fork distal of both RS and CuA forks. CuAconcave only up to fork, further neutral.

1+2

MEASUREMENTS. Forewing length about 25 mm.

ETYMOLOGY. From the Baydaevsky Coal Field.

Figures

Figs 7, 8. Forewing of Permosialis bayda Aristov et Rasnitsyn, sp. n., holotype PIN, No 3701/2. 7 – general appearance; 8 – reconstruction.