Pediasia gorbunovi Sinev et Korb, 2024

Sinev, Sergey Yu. & Korb, Stanislav K., 2024, A new alpine autumnal species of the genus Pediasia Hübner, 1825 (Lepidoptera: Crambidae) from Kyrgyzstan, Zootaxa 5538 (1), pp. 54-58 : 55-56

Pediasia gorbunovi Sinev et Korb , sp. nov.

Figs 1, 2 , 7, 8

Zoobank registration: urn:lsid:zoobank.org:act:713B9E65-E69D-4EB9-9A53-FCC5B17FBF10

Type locality and HT repository: Kyrgyzstan, Baidulu Mts. , Dolon Pass, 41°52’40”N, 75°42’11”E, 2790 m; HT is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg, Russia).

Material. Holotype male, 27- 28.09.2022, Kyrgyzstan, Baidulu Mts., Dolon Pass , 41°52’40”N, 75°42’11”E, 2790 m, leg. S.K. Korb. Paratypes: 2 males, 27- 28.09.2022, same data as holotype, leg. S.K. Korb. Holotype is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg, Russia); paratypes, in the private collection of S.K. Korb (Bishkek, Kyrgyzstan).

Description ( Figs 1, 2 ). Male. Forewing length 9.5–10.0 mm. Head, labial palpi, thorax, legs and abdomen grey. Antennae dark-grey with some brownish shade. Forewing grey, with indistinct pattern represented by 1–6 marginal black dots, and by scarce dark scales suffusion concentrated into oblique stroke in the middle part of the wing. Hindwing slightly lighter than forewing, without pattern. Fringes whitish with grey scales.

Female. Unknown.

Male genitalia ( Figs. 7, 8 ). Uncus narrow from the lateral view, shorter than tegumen, with pointed apex. Gnathos much longer than uncus, about the same width as uncus, with hook-shaped apex. Saccus pointed. Valvae almost triangular with curved sclerotized dorsal process and rather wide, apically rounded membranous cucullus. Aedeagus almost straight, slightly curved in its middle part, with rounded apex and long (about 1/4 of the total length of the aedeagus) apical thorn, large subapical triangular tooth and additional large medial triangular tooth; sclerotized belt rather thin and started from about 60% of the aedeagus length.

Diagnosis. One of the most narrow-winged species of the genus. Similar in appearance to P. matricella ( Figs. 3–6 ), another narrow-winged species, but slightly lighter and the wing pattern is not as well defined. In the structure of male genitalia, the new species differs from P. matricella ( Figs. 9, 10 ) in the following characters: cucullus is wider and more noticeably curved upward; saccus apically short pointed, not rounded; aedeagus has two well defined rather than one thorn-like cornutus, the longitudinal sclerotized area is not expressed.

Etymology. We name this species after Pavel Gorbunov (Ekaterinburg, Russia), a well-known Russian lepidopterist, who organized the trip during which this new species was collected.

Biology. The moths were collected at the end of September in alpine dry meadows next to the scree and rocks in the valley of a small stream at the 2790 m above sea level using autonomous automatic light trap. The same place visited by the second author several times in early June, in the beginning and in the end of July and in the beginning of August gave no additional material.

Figures

FIGURES 1–6. Pediasia spp., habitus, males. 1, 2, P. gorbunovi sp. nov., holotype (1) and paratype (2); 3–5, P. matricella (Treitschke, 1832), Kazakhstan, Irghiz env.; 6, same, Hungary, 100 km S of Budapest. Scale bar: 0.5 mm.

FIGURES 7–10. Pediasia spp., male genitalia. 7, 8, P. gorbunovi sp. nov., holotype; 9, 10, P. matricella (Treitschke, 1832), Hungary, 100 km S of Budapest. Arrows pointing differences.