Ivanauskiella annekristinae, 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 : 152-153

Ivanauskiella annekristinae sp. nov.

( Figs 23–24 , 59 )

Type material. HOLOTYPF: J, FRANCE: CORSICA: Calvi, 10 m, 18.–19. viii.1998,O.Karsholt leg.( ZMUC).PARATYPFS: 9 JJ, same data as for holotype (gen.slide 137/20,OB;3099J, Hendriksen) ( NMPC, ZMKU, ZMUC).

Diagnosis. Ivanauskiella annekristinae sp. nov. is characterized by the pure white head, thorax, tegulae and labial palpus, and the white forewings with rather large, dark brown markings. Ivanauskiella nigripunctata sp. nov. is similar but differs in the colour of segment 2 of the labial palpus being brown with white apex, and light grey forewings with smaller brown markings. The male genitalia are similar to those of I. nigripunctata sp. nov. except for the broader uncus and the U-shaped, rather than triangular saccus in I. nigripunctata sp. nov.

Description. Adult ( Figs 23–24 ). Wingspan 7.0 mm. Head, thorax and tegulae white; labial palpus white, segment 3 about 2/3 length of segment 2 and at its base almost as wide as segment 2, acute; scape of antenna light brown, flagellum light brown, ringed with white; forewing white with gentle light brown suffusion at base, along costal margin and in fold, apex covered with darker, light brown scales with brown tips, two small blackish brown spots in fold, large blackish brown spot at 2/3 and another small spot at 3/4; fringe white, tipped with brown; hindwing and fringe white.

Male genitalia ( Fig. 59 ). Uncus moderately broad, apex slightly widened, rounded, extending to top of valva, posterior margin weakly serrate; tegumen subrectangular, slightly broader than medial portion of uncus; valva moderately broad, in middle twice as broad as uncus, gradually bent, top and base as broad as top of uncus; sacculus about half length of valva, as broad as valva in middle; vinculum short; saccus short, U-shaped; phallus with 25–30 dense needle-shaped spines, distal plate ovate.

Female genitalia. Unknown.

Molecular data. No barcode available.

Etymology. The new species is named after Anne Kristine Karsholt for supporting OK by collecting the type series during their honeymoon to Corsica 25 years ago.

Biology. Host plant unknown, but possibly Limonium sp. , which grew at the type locality. The adults were collected in a light trap with an 8 Watt actinic tube during mid-August. The trap was placed on a cliff ledge facing the Mediterranean Sea.

Distribution. France: Corsica.

Remarks. Ivanauskiella annekristinae is superficially similar to Phragmatodes cyrneogonella Nel & Varenne, 2012, which is endemic to Corsica and Sardinia. The latter has larger blackish spots and more blackish brown suffusion in the forewing, and the outside of segment 2 of the labial palpus is blackish brown.

Figures

Figs 12–24.Adults of Ivanauskiella species. 12–15 – I. ainella (Chrétien, 1908): 12 – male, paratype, Algeria (gen. slide 139/20, OB); 13–15 – Morocco: 13 – male (gen. slide 180/22, OB); 14 – male (gen. slide 177/22, OB); 15 – female (gen. slide 187/22, OB). 16–22 – I. nigripunctata sp. nov., Spain: 16 – holotype, male; 17 – paratype, female (gen. slide 136/20, OB); 18 – paratype, male (gen. slide 135/20, OB); 19 – paratype, female (gen. slide 151/20, OB); 20 – paratype, male (gen. slide 18084, JŠ); 21 – paratype, male (gen. slide 23015, JS); 22 – paratype, female (gen. slide 183/22, OB). 23–24 – I. annekristinae sp. nov., males, France, Corsica, paratypes: 23 – gen. slide 137/20, OB; 24 – male.

Figs 55–59. Male genitalia of Ivanauskiella species. 55 – I. ainella (Chrétien, 1908), Morocco (gen. slide 180/22, OB). 56–58 – I. nigripunctata sp. nov.: 56 – paratype, Spain (gen. slide Wf 6081); 57 – paratype, Spain (gen. slide 156/20, OB); 58 – paratype, Spain (gen. slide 151/20, OB). 59 – I. annekristinae sp. nov., paratype, France, Corsica (gen. slide 137/20, OB).