Permosialis belebei 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 : 19-20

Permosialis belebei Aristov et Rasnitsyn , sp. n.

https://zoobank.org/NomenclaturalActs/ F3EC26AC-F590-4732-8E8A-C045C2F82A32

Figs 3–6

Permosialis ualentovae: Novokshonov & Zhuzhgova, 2004: 183 , fig. 6b (pro parte, quoad paratypes 1366/379, 1366/463).

MATERIAL. Holotype PIN, No 1366/379, counterpart of forewing; Russia, Kirov region, Malmyzh district, left bank of the Kityak River opposite the village of Bol’shoi Kityak; Upper Permian, Kazanian, Belebei Formation; in Borissiak Paleontological Institute, Russian Academy of Sciences ( PIN RAS). Paratype PIN, No 1366/463, part of forewing fragment, same origin and museum .

DESCRIPTION. Forewing comparatively narrow (not as wide oval as P. sibirica ), holotype with weakly preserved color pattern of narrow bent belt from mid RS 1+2 through base of CuA fork to subapical anal area, and hardly visible small spots between RS 1, RS 2, RS 3 and M 1 near wing apex (no color pattern preserved in paratype). SC с 5 long branches (much longer than distances between them), including long apical fork. RS first fork before wing midlength, with RS stalk about as long as RS 1+2 stalk; RS 1+2 more than half as long as entire RS, starting shortly after wing midlength. M stalk free, M 5 short, oblique. RS 1+2, M and Cu forks aligned in proclival line (with RS most basal) in holotype and scarcely reclival (with CuA more basal) in paratype, CuA all concave, with fork wide basally.

1+2

DIAGNOSIS. Differs from other Permosialis by SC with few long branches.

MEASUREMENTS. Forewing length in holotype 22 mm, in paratype 13.5 mm as preserved, full length probably ca. 16 mm.

NOTES. Novokshonov & Zhuzhgova (2004) considered this species as female of P. ualentovae based on larger wings with similar venation. Hypothesis of the possible sexual dimorphism of Permosialis in wing size proposed in the above publications needs further consideration based on a more wide material which is planned to do later in this series of publication.

ETYMOLOGY. From the Belebei Formation.

Figures

Figs 3, 4. Forewing of Permosialis belebei Aristov et Rasnitsyn, sp. n. 3 – holotype PIN, No 1366/379, general appearance; 4 – paratype PIN, No 1366/463, general appearance.

Figs 5, 6. Forewing of Permosialis belebei Aristov et Rasnitsyn, sp. n. 5 – holotype PIN, No 1366/379, interpretation; 6 – paratype PIN, No 1366/463, interpretation.