Scrobipalpa burkutica, Bidzilya, 2023

Bidzilya, Oleksiy V., 2023, Two new species of the genus Scrobipalpa Janse, 1951 (Lepidoptera, Gelechiidae) from Ukraine, Nota Lepidopterologica 46, pp. 125-134 : 125

publication ID	https://dx.doi.org/10.3897/nl.46.103595
publication LSID	lsid:zoobank.org:pub:76420E50-AF6C-4C79-BF76-624209EB2263
persistent identifier	https://treatment.plazi.org/id/FC38F514-2D2D-46C6-AB24-1A604B079EF7
taxon LSID	lsid:zoobank.org:act:FC38F514-2D2D-46C6-AB24-1A604B079EF7
treatment provided by	Nota Lepidopterologica by Pensoft
scientific name	Scrobipalpa burkutica
status	sp. nov.

Treatment

Scrobipalpa burkutica sp. nov.

Material examined.

Holotype: UKRAINE • ♀; Kherson reg., Holopristanskiy distr., Burkuty vill. env.; 21 Jun. 2017; O. Bidzilya leg; gen. slide 141/23, O. Bidzilya; ZMKU.

Paratypes: UKRAINE • 1 ♂, 1 ♀ ; Tchernomorskiy Nature Reserve , Ivano-Rybalchanskiy loc.; 28-30 Apr. 1999; E. Rutjan leg.; gen. slide 67/07 ♀, 9/ 11♂, O. Bidzilya; ZMKU.

Diagnosis.

Scrobipalpa burkutica sp. nov. is characterized by the uniformly greyish brown forewing with ochreous suffusion (Figs 7-9 View Figures 2–9 ). Scrobipalpa vasconiella ( Rössler, 1877) has a more contrasting forewing with a distinct black pattern. Scrobipalpa amseli Povolný, 1966 has the forewing with same ground colour, but differs in having black spots in the cell. The new species can be confused with unicolorous specimens of S. nitentella (Fuchs, 1902) with reduced markings (see Gregersen and Karsholt 2022, fig. 205 f). The male genitalia resemble those of S. karadaghi (Fig. 15 View Figures 10–15 ) but in the latter the uncus is shorter and less produced, the valva is narrower at the base, the vincular process is slightly longer and wider, and the saccus is broader at the base. The male genitalia differ from those of S. arenicola sp. nov. in the rounded posterior margin of the uncus (straight or weakly emarginate in S. arenicola sp. nov.), broader valva, the sacculus more distinctly narrowed apically, the vincular process broader at base than the adjacent part of the valva (as broad as the adjacent portion of the valva in S. arenicola sp. nov.) and a basally broader saccus. The female genitalia are characteristic with papillae anales subrectangular in the basal half, sternum VIII twice as broad as long, with distinct sclerotised anterior edge and rounded lobes of ventromedial depression that are densely covered with reticulate network of sclerotised ridges that does not extend beyond the anterior margin of sternum VIII. Scrobipalpa wiltshirei Povolný, 1966 seems to be most similar in respect of the female genitalia, but differs in having a deeper anteromedial emargination between the lobes of the ventromedial depression, and subovate papillae anales.

Description.

Adult (Figs 7-9 View Figures 2–9 ). Wingspan 10-12 mm. Head covered by greyish brown scales with dark brown tips, labial palpus recurved, segment 2 light brown mottled with dark brown, inner and upper surface pale, with groove beneath, segment 3 light brown with broad pale medial ring and whitish tip, scape brown mixed with grey, flagellum brown ringed with grey thorax and tegula concolorous with head; forewing plainly coloured, covered with grey to ochreous-brown scales with dark brown tips, fold ochreous-brown with a very indistinct brown marking, fringes grey to light brown, tipped with dark brown; hindwing grey, fringes concolorous.

Variation. The forewing of the female paratype is distinctly mixed with dark brown and is smaller in size.

Male genitalia (Fig. 14 View Figures 10–15 ). Uncus subtriangular, rounded apically, with indistinct transition to tegumen; distal sclerite of gnathos long, hook-shaped; tegumen subtriangular, anteromedial emargination broadly rounded, extending to 1/3 length of tegumen; valva moderately broad, of even width except slightly inflated apex, weakly curved, extending to top of uncus; sacculus gradually curved, apex pointed, about 1/3 length of valva; vinculum twice as broad as long, anteromedial emargination triangular, vincular processes subtriangular with outwardly curved tip, short, broad at base, extending to mid-length of sacculus; saccus subtriangular, widening posteriorly, pointed, extending slightly beyond pedunculus; phallus nearly parallel-sided, apical arm slender, coecum strongly inflated, slightly shorter than phallic trunk.

Female genitalia (Figs 16 View Figures 16, 17 , 17 View Figures 16, 17 ). Papillae anales subrectangular in basal half, then narrowing on outer edge towards apex; apophysis posterioris three times as long as segment VIII and twice length of apophysis anterioris; segment VIII twice as broad as long, subrectangular, with distinct sclerotised anterior edge, lobes of subgenital plates broadly separated anteromedially and more closely connected posteromedially, with broad patch consisting of reticulate network of sclerotised ridges at base of apophysis anterioris; lobes of ventromedial depression broadly rounded, separated anteromedially by a short triangular incision, densely covered with reticulate sculpturing which overlaps laterally with medial portion of lobes of ventromedial depression; apophysis posterioris slightly longer than segment VIII, slender, acute; ductus bursae distinctly broadened anteriorly, gradual transition to corpus bursae, colliculum short, ring-shaped, corpus bursae ovate, signum with large subtriangular weakly serrated basal plate, distal hook slender, nearly straight.

Variation. Female paratype differs in the signum having a smaller basal plate and distinctly curved distal hook.

Molecular data.

No DNA barcode available.

Biology.

Adults have been recorded in late April and late June. The species inhabits dunes and sand steppes in the Lower Dnipro Sands in the Kherson region of Ukraine (Figs 18-21 View Figures 18–21 ).

Distribution.

Ukraine: Kherson region.

Etymology.

The specific epithet is derived from the Burkuty village in the Kherson region of Ukraine which is the type locality of the new species.