Ivanauskiella sutteri, Bidzilya & Karsholt & Šumpich, 2023

Bidzilya, Oleksiy, Karsholt, Ole & Šumpich, Jan, 2023, A revision of the genus Ivanauskiella (Lepidoptera: Gelechiidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 63 (1), pp. 135-164 : 138-139

Ivanauskiella sutteri sp. nov.

( Figs 2–3 , 51 , 72 )

Type material. HOLOTYPF: ♀, GREECE: CRETE: Makrigialos,Aspros Potamos, 20 m, LF, 3.ix.2001, R. Sutter leg. (gen. slide 165/20, OB) ( SMNK). PARATYPF: 1 J, same data as for holotype but 8.ix.2001 (gen. slide 6630, Sutter) ( SMNK).

Diagnosis. This new species can be recognized externally by the white head and white forewing strongly mottled with light brown scales. The male genitalia are identifiable from a broad valva (in basal half about as broad as at apex) and uncus strongly widened after 1/4 (after 1/2–3/ 4 in the remaining species). Two short teeth on colliculum and a single four-horned signum are characteristic for the female genitalia.

Description. Adult ( Figs 2–3 ). Wingspan 7.6–8.0 mm. Head white; labial palpus white mixed with brown on outer surface; scape of antenna light brown with white apex, flagellum light brown ringed with white; thorax and forewing covered with white, brown-tipped scales, very indistinct markings and diffuse brown spot in fold in one specimen, fringe white; hindwing white.

Male genitalia ( Fig. 51 ). Uncus very slender at base, strongly widened after 1/4–1/3, extending to top of valva, apex triangular, posterior margin weakly serrate; tegumen subrectangular, slightly broader than medial portion of uncus; valva broad, weakly narrowed in middle, gradually bent, top and base as broad as top of uncus; sacculus 1/3–1/2 length of valva, as broad as valva in middle; vinculum short; saccus short, triangular, pointed; phallus with 15–17 large needle-shaped and small, short, thorn-shaped spines, distal plate large, of irregular shape.

Female genitalia ( Fig. 72 ). Papilla analis subovate, covered with short hair-like setae; apophysis posterioris straight, as long as apophysis anterioris; segment VIII weakly sclerotised, subtrapezoidal, slightly broader than long; apophysis anterioris straight; ductus bursae gradually broadening anteriorly, colliculum with two short thorn-shaped sclerites, situated at 1/3 of ductus bursae; corpus bursae egg-shaped, signum single plate with four horn-shaped processes – posterior ones shorter than anterior ones.

Molecular data. No barcode available.

Etymology. The species is named in honour of the late German microlepidopterist Reinhard Sutter, who collected the type series of the new species.

Biology. Host plant unknown. Adults were collected at light at an altitude of 20 m in early September.

Distribution. Greece: South-eastern Crete.

Figures

Figs 2–11. Adults of Ivanauskiella species. 2–3 – I. sutteri sp. nov., Crete: 2 – holotype, female (gen. slide 165/20, OB); 3 – paratype, male (gen. slide 6630, R. Sutter). 4–7 – I. bovis sp. nov., Morocco: 4 – holotype, female (gen. slide 164/20, OB); 5 – paratype, female (gen. slide 132/20, OB); 6 – paratype, male (gen. slide 131/20, OB); 7 – paratype, male. 8–11 – I. psamathias (Meyrick, 1891): 8 – lectotype, male, Algeria (gen. slide J.F.G.C. 9056); 9 – male, Tunisia (gen. slide 5/20, OB); 10 – female, Tunisia (gen. slide 98/22, OB); 11 – male, Tunisia (gen. slide 24/20, OB).

Figs 51–54. Male genitalia of Ivanauskiella species. 51 – I. sutteri sp. nov., paratype, Greece, Crete (gen. slide 6630, R. Sutter). 52 – I. bovis sp. nov., Morocco, paratype (gen. slide 131/20, OB). 53 – I.psamathias (Meyrick, 1891), Tunisia (gen. slide 24/20, OB).54 – I. ainella (Chrétien, 1908):paratype, Algeria (gen. slide 139/20, OB).

Figs 72–73. Female genitalia of Ivanauskiella species. 72 – I. sutteri sp. nov., Greece, Crete, holotype (gen. slide 165/20, OB); 73 – I. bovis sp. nov., Morocco, HT (gen. slide 164/20, OB). a – colliculum (enlarged); b – signum (enlarged).