Epischidia margaritae Streltzov, 2023

Streltzov, A. N., 2023, A new species of the genus Epischidia Rebel, 1901 (Lepidoptera: Pyraloidea, Pyralidae) from the Russian Far East, Far Eastern Entomologist 477, pp. 1-5 : 2-5

Epischidia margaritae Streltzov , sp. n.

https://zoobank.org/NomenclaturalActs/ F44F6B61-CC62-4E6F-9F2D-3EFCB9805786

Figs 1–6

TYPE MATERIAL. Holotype: ♂, Russia: Amur Region, neighborhood of Blagoveshchensk , village Verkhneblagoveshchenskoe, agrobiological station of BSPU (Blagoveshchensk State Pedagogical University) , 50°16′32″ N, 127°27′6″ E, 20− 25. 07.2014, A. Streltzov leg. (permanent slide no. PPH038) ( ZISP) . Paratypes: 4♀, the same locality, 17− 26.07.2012 (1♀ – permanent slide no. PPH052) ( ZISP) .

MATERIAL EXAMINED FOR COMPARISION. Epischidia fulvostrigella – 1♂, 1♀, Astrakhan Nature Reserve, Damchik cordon, 08/5/1968, Penchukovskaya; Volgograd Region, Tumak community, 6.08.1993, Komarov D.A.; 1♂, Novosibirsk, 11.08.1987, P.Ya. Ustyuzhanin. Image: Roesler, 1973: taf. 3, fig. 26 (imago); taf. 45, fig. 26 (male genitalia); taf. 100, fig. 26 (female genitalia). Epischidia caesariella – 1♂, Kherson, 07.24.1912, E. Yatsentkovsky. Image: Roesler, 1973: taf. 3, fig. 27 (imago); taf. 45, fig. 27 (male genitalia); taf. 100, fig. 27 (female genitalia).

DESCRIPTION. Male ( Fig. 1 ). Head: forehead broad with large triangular (lateral view) outgrowth 1.2–1.5 times larger than the diameter of the eye, covered with yellowish elongated scales ( Fig. 3 ); eyes rounded, bare; basal segment of antennae long, straight, first segments of antennal flagellum small, forming a curve with short androconial scales; Labial palpus long, twice as long as eye diameter, covered with yellowish scales; Maxillary palpus is short with a small tuft of elongated thin scales. Thorax, tegulae and tarsi rufous light brown. Forewings: general color background – light brown with a buffy tinge. Ante-medial line yellowish-white, slightly visible; discal spot in the form of two dark brown blurry dots; post-medial line thin, yellowish-white, almost straight with slight inward curvature at the discal part; the outer area is slightly darker than the general background; marginal line yellowish white with small black dots along the edge; fringe light brown. Hind wings are light brown with a grayish tinge, without pattern. The fringe is lighter than on the forewings. The length of the forewing is 10 mm, the wingspan is 22 mm.

Female ( Fig. 2 ). Somewhat larger than the male, length of the forewing 10.5–11 mm, wingspan 22–23 mm. The coloration is the same as in males, but the dark and light elements of the pattern are better expressed. Antennae simple, without androconial sinus.

Male genitalia ( Figs 4–5 ). The uncus is oblong with a blunt apex. The gnathos is short, hook-shaped with a pointed apex. Valva narrow, membranous, with strongly sclerotized costal margin. The harp is large, cone-shaped. Sacculus small, triangular. Vinculum is large, its branches are approximately equal to the length of the valva. The juxta is forked, with somewhat widened apices covered with short hairs. Aedeagus ( Fig. 5 ) is large, slightly curved in the middle, somewhat longer than the valva. The aedeagus tube has a large area of finely granulated sclerotization on the vesicle and a group of cornuti: one large, straight, spiny, three somewhat smaller, and five thinner and serrate.

Female genitalia ( Fig. 6 ). Papillae anales are oblong, elongated. Apophyses posteriors thin, twice as long as papillae anales. Apophyses anteriores are thicker and somewhat shorter than apophyses posteriors. Antrum wide with v-shaped area of sclerotization. The ductus bursae is membranous, rather wide, shorter than the apophyses posteriors. The corpus bursae is large, oblong, with a large area of sclerotization covered with small teeth (near the confluence of the ductus bursae). Approximately in the middle of the corpus bursae there are two rounded-angular signums. Each signum consists of six lobes, in the center of which there is a hook-shaped spike.

DIFFERENTIAL DIAGNOSIS. The new species is closest to the type species of the genus Epischidia fulvostrigella , from which it differs by a brighter coloration of the forewings and a larger outgrowth on the forehead. In the structure of the male genitalia in the new species, the differences are as follows: the presence of a large triangular harp on the valva, a relatively longer uncus, and a curved aedeagus with a large number of large spiny cornuti. In the structure of the female genitalia, the differences are in the v-shaped area of sclerotization of the antrum and a more extensive area of sclerotization on the bursa near the confluence of the ductus bursae. The new species differs from E. caesariella by its larger size and developed areas of orange coloration of the forewings; the differences in the structure of the male genitalia are the absence of a harp on the valva and small cornuti in the tube of the aedeagus in E. caesariella ; in the female genitalia, E. caesariella differs from the new species by the absence of large signums on the bursa.

DISTRIBUTION. New species is known only from the type locality: the vicinity of Blagoveshchensk , Amur Region, Russia . It probably lives in the adjacent territory of China.

BIOLOGY. The type material was collected in agricultural landscapes in mid- July. Of the natural biotopes, there are heavily modified meadows of various types and oak-lespedecia sparse forests nearby.

ETYMOLOGY. The species is named after the famous Russian lepidopterist Dr Margarita Ponomarenko (Vladivostok, Russia).

Figures

Figs 1–8. Epischidia margaritae sp. n.: 1 – holotype, adult male; 2 – paratype, adult female; 3 – head, lateral view; 4, 5 – male genitalia: 4 – armature genitals, 5 – aedeagus; 6 – female genitalia.