Scrobipalpa lobata, Bidzilya, Huemer & Sumpich, 2022

BIDZILYA, OLEKSIY, HUEMER, PETER & ŠUMPICH, JAN, 2022, Taxonomy and faunistics of the genus Scrobipalpa Janse, 1951 (Lepidoptera, Gelechiidae) in southern Siberia, Zootaxa 5218 (1), pp. 1-76 : 17-18

Scrobipalpa lobata sp. nov.

Figs 33 , 90, 91 , 139

Misidentification dorsoflava auct. (nec Povolný 1996).

Type material. Holotype ♂, Russia, Altai Republic, Chagan-Uzun env., Krasnaya Gorka hill, 50°05´00´´N, 88°25´15´´E, rocky steppe, 1870 m, 23.vii.2017 (Šumpich) (Barcode NMPC-LEP-1085) ( NMPC) ; 9 ♂, Russia, Altai Republic, Aktash vill., 50°19'12"N, 87°36'00"E, 1400 m, grassy steppe, rocks, 21.vi. 2015 (Šumpich) (gen. slides 194/18, 182/21, OB) (Barcodes, NMPC-LEP-0334, NMPC-LEP-0576, NMPC-LEP-0930 [failed], NMPC-LEP-1093 [failed]) ; 1 ♂, Russia; Altai Republic, Kosh-Agach District , Kurai env. (15 km SW), Dzhangyskol lake (or Salagana lake ), 50°10'49"N, 87°44'19"E, 1830 m, coniferous forest/steppe, 24, 25.vi. 2015 (Šumpich) (gen. slide 172/21, OB) (Barcode NMPC-LEP-0572) ; 5 ♂, Russia, Altai Republic, 45 km N of Ulagan vill., Chulyshman valley , 51°01′03″N; 88°00′39″E, grassy steppe, rocks, 600 m, 26, 27.vi.2019 (Šumpich) (DNA Barcodes NMPC-LEP- 0932, NMPC-LEP-1105, NMPC-LEP-1106) (all NMPC) ; 1 ♂, Russia, Altai Mts, 50°14-16’N 87°50-55’E, Kuraiskaya steppe, 1500–1700 m, 5.vii.2001 (Nupponen) (gen. slide 300/16, OB) ; 2 ♂, 3 ♀, same data as for preceding but 26.vi.2002 (T. & K. Nupponen) (gen. slides 305/ 16♂, 306/ 16♀, OB) (all NUPP) ; 1 ♂, 1 ♀, Altai, Kosh-Agatch distr. , Tyurgun’ river near Tchuya tract, 1500 m, 7.vii.2001, at light (gen. slide 243/ 19♂, OB) ( ZMKU) ; 1 ♂, 1 ♀, Russia, Tuva rep., 50°16’N 94°54’E, 1250 m, ca. 25 km W Erzin, steppe/stony slopes, 7–11.vi.1995 (Jalava & Kullberg) (gen. slides 323/ 16♀, 203/ 19♂, OB) ; 1 ♂, Buryatia, 51°40’N 107°20’E, Barguzin valley , 35 km SW Ulan-Ude, Ivolginsk-Taphar , 700 m, steppe hill, 29.iv.1998 (Jalava & Kullberg) (gen. slide 255/16, OB) ; 1 ♂ same data as for preceding but 7.v.1998 (gen. slide 317/16, OB) (all MZH).

Diagnosis. A rather variable species, but greyish black forewing with black spots in cell and fold, black subapical streak and light brown suffusion along veins, in fold and near dorsal margin are characteristic of most of the examined specimens. Scrobipalpa dorsoflava ( Povolný, 1996) is very similar, but the black subapical streak is absent, and the dorsal margin is distinctly lighter in this species. The male genitalia are distinguished by the sacculus being broadest in the middle with a distinctly bent dorsal margin in combination with a slender phallus with a strongly inflated caecum. Scrobipalpa magnificella Povolný, 1967 and S. heretica have a similar sacculus, but the vincular processes are shorter (not reaching top of sacculus), and the saccus is broader and shorter. The long lobes of the ventromedial depression that far extend beyond the anterior margin of sternite VIII and subgenital plates strongly sclerotised medially are characteristic of the female genitalia. Scrobipalpa maniaca Povolný, 1969 has similar long lobes of the ventromedial depression, but differs in the more uniformly sclerotised subgenital plate and very slender and long signum. Scrobipalpa similis Povolný, 1973 has shorter lobes of the ventromedial depression, more closely connected anteriorly, and a stronger curved signum. For the differences from other species see Huemer & Karsholt (2010: 111–112).

Description. Adult ( Fig. 33 ). Wingspan 9.5–12.0 mm. Head covered with light grey scales tipped with brown, frons grey, palpomere 2 of labial palpus brown densely mixed with light grey, inner surface almost white, palpomere 3 greyish brown with narrow white medial ring and white apex, scape black, flagellum blackish brown with indistinct grey rings. Thorax and tegulae covered with brown, grey-tipped scales. Forewing greyish brown, two black spots in cell and in fold, black narrow apical streak from cell corner to apex, veins, especially subcostal, fold and dorsal margin with light brown suffusion, cilia grey, black-tipped. Hindwing and cilia grey.

Variation. Some specimens, especially worn ones, have a less distinct light-brown suffusion, others have veins mottled with light grey rather than light brown.

Male genitalia ( Figs 90, 91 ). Uncus subrectangular, twice as long as broad, posteromedial corners rounded, posterior margin with short medial emargination; gnathos short, weakly curved; tegumen longer than broad, anteromedial enargination extends to 1/3 length of tegumen; cucullus slender, gradually curved, apex broadened and rounded, extending to or slightly exceeding top of uncus; sacculus broadest in middle, 1/4–1/3 length of cucullus, dorsal margin distinctly bent, ventral margin nearly straight, gap to cucullus narrow; vinculum broader than long, posterior margin with deep lyre-shaped medial emargination, vincular processes as broad as sacculus in middle, extending to top of sacculus, with outwardly curved pointed tips; saccus parallel-sided becoming evenly tapered towards apex; phallus moderately narrow, parallel-sided, with pointed apex, apical lobe slender, pointed, weakly down-curved, caecum distinctly inflated, 1/3 length of phallic tube.

Female genitalia (Fig. 139). Papillae anales subovate, densely covered with short setae, apophyses posteriores 3 times as long as apophyses anteriores; segment VIII slightly longer than broad, subrectangular, subgenital plate 1/3 width of sternum VIII, weakly sclerotised, unmodified in lateral half and strongly sclerotised, densely covered with microspines in medial half, patch of foam sculpture at base of apophyses anteriores, ventromedial depression largerly covered with microspines, lobes far extend beyond anterior margin of sternum VIII, covered with foam sculpture anteriorly, separated with V-shaped emargination; apophyses anteriores as long as segment VIII; ductus bursae gradually broadened anteriorly, colliculum moderately broad; ductus bursae rounded to egg-shaped, signum with small basal plate, distal hook long, slender, weakly curved, with several teeth at base, placed at right side near entrance of ductus bursae.

Molecular data. BIN: BOLD:ADR6356. The intraspecific average distance of the barcode region is 0.15% (n=8). The minimum distance to the nearest neighbour, an unidentified species of Scrobipalpa from Canada (BIN: BOLD:AAG9134), is 5.81% (p-dist) ( Fig. 1 ).

Distribution. Russia: southern Ural, Altai, Tuva, Buryatia.

Etymology. The specific name reflects the elongated lobes of the ventromedial depression that are characteristic of the new species.

Remarks. The species was erroneously identified as S. dorsoflava in a series of publications and introduced under this name in regional lists and catalogues ( Huemer & Karsholt 2010: 12; Junnilainen et al. 2010: 47; Ponomarenko 2019: 101). In fact, S. dorsoflava is only known from the holotype from Kyrgyzstan.

Figures

FIGURE 1. Neighbour-joining tree of Scrobipalpa lobata sp. nov.andS.nupponeni sp.nov.and their closest species, unidentified species from Canada, in BOLD.

Figures 31–40. Scrobipalpa spp., adults. 31, 32. S. zaitzevi, Altai. 31. Female. 32. Male. 33. S. lobata sp. nov., Altai, PT, male. 34. S. truncata, male, Buryatia (gen. slide 258/16, OB). 35. S. marmorella, female,Altai (gen. slide 307/21, OB). 36. S. kullbergi sp. nov., HT, male, Tuva (gen. slide 311/16, OB). 37, 38. S. inexplictata sp. nov., PT, Altai. 37. Male. 38. Female. 39, 40. S. cinerosella, Altai. 39. Male. 40. Female.

Figures 88–91. Scrobipalpa spp., male genitalia. 88, 89. S. zaitzevi. 88. HT, Mongolia (gen. slide 176/08, OB). 89. Russia, Altai (gen. slide 269/20, OB). 90, 91. S. lobata sp. nov. 90. PT, Altai (gen. slide 282/21, OB). 91. PT, Buryatia (gen. slide 203/19, OB).