Argyresthia (Argyresthia) subzonata, Liu, Tengteng, Wang, Shuxia & Li, Houhun, 2017

Liu, Tengteng, Wang, Shuxia & Li, Houhun, 2017, Review of the genus Argyresthia Hübner, [1825] (Lepidoptera: Yponomeutoidea: Argyresthiidae) from China, with descriptions of forty-three new species, Zootaxa 4292 (1), pp. 1-135 : 53-54

42. Argyresthia (Argyresthia) subzonata , sp. nov. ( Figs. 52 , 120 , 176 , 232 , 278 )

Description. Adult ( Fig. 52 ) wingspan 15.5̄16.0 mm. Head yellowish white. Labial palpus yellowish white, mixed with fuscous laterally. Antenna with scape yellowish white, pecten yellowish fuscous; flagellum yellowish white, ringed with black. Foreleg with femur, tibia and tarsus blackish fuscous on inner surface, remainder yellowish white; midleg mostly yellowish white, femur gray on outer surface, tibia gray on distal part, second to fifth tarsomeres mostly yellowish fuscous except blackish fuscous distally; hindleg mostly yellowish white, tarsus blackish gray on each tarsomere distally. Thorax yellowish white, with two longitudinal black streaks laterally; tegula yellowish white. Forewing ratio 4.8; yellowish white; costa with about 10 black dots, black dot before middle largest; longitudinal blackish-gray band overlaid with yellow from near base of costa extending obliquely outwards to upper margin of cell, and from there to apex, distal half distinctly curved; dorsum with a large more or less broad U-shaped black pattern, starting from near base below fold, extending obliquely inward to basal 1/5 of wing on dorsum, continuing from basal 1/5 to 3/7 along dorsum, then obliquely outward to distal 1/5 of cell, intersecting preceeding longitudinal band; slender black dorsal band from middle of wing to tornus, dotted with black above, produced to a spot at tornus; cilia yellowish white on costa and around apex, gray on termen. Hindwing and cilia uniformly gray. Abdomen silvery gray dorsally, yellowish white ventrally.

Male genitalia ( Figs. 120 , 176 , 232 ): Tuba analis shorter than width of valva. Socius covered with 13̄14 scale-like setae, bearing two long setae posteriorly ( Fig. 232 ). Gnathos inflated distally, with nine long thick setae apically. Valva elongate oval, widest at base, narrowed towards apex, rounded apically, dorsal margin straight; a clump of thick setae in disc near ventral margin, with sparser similar setae in distal area. Saccus half width of valva, triangular, truncate apically. Phallus arched in distal 7/11, 3.7 times as long as width of valva ( Fig. 176 ). Second sternite with about 10 micro-setae in each row; eighth sternite Y-shaped. Coremata present.

Female genitalia ( Fig. 278 ): Ovipositor 2.5 times as long as eighth segment. Anterior apophysis 3/5 length of posterior apophysis, bifurcate at distal 2/5; branch bifurcate a second time, with dorsal branch extending to lamella postvaginalis, ventral branches fused, forming ventral margin of ostium bursae. Lamella postvaginalis nearly trapezoidal. Antrum funnel-shaped, 2/5 length of eighth segment. Ductus bursae densely spinulate near and before opening of ductus seminalis; ductus seminalis originating from middle of ductus bursae. Corpus bursae oval, with dense micro-denticles, sparser anteriorly; signum with band-shaped basal plate slightly narrowed basally, slender horns slightly curved inward, water caltrop-shaped, anterior margin convex medially.

Type material. CHINA: Holotype, Ƌ, Lulang Town (29.74°N, 94.73°E), Linzhi County, Xizang Autonomous Region, 3065 m, 4.viii.2010, leg. Houhun Li et al., slide no. LTT12338 . Paratype: 1♀, Dianchanggou (29.65°N, 94.37°E), Bayi Town , Linzhi County, 3470 m, 6.viii.2010, leg. Houhun Li et al., slide no. LTT12339 .

Distribution. China (Xizang).

Diagnosis. This species can be distinguished from its congeners by the forewing having a longitudinal blackish-gray band overlaid with yellow near the costa and a more or less U-shaped black pattern arising from the dorsum.

Etymology. The specific name is derived from the Latin subzonatus, meaning below the zone, referring to the curved longitudinal band of the forewing.

Figures

FIGURES 52 – 59. Adults of Argyresthia spp. 52, A. (Argyresthia) subzonata, sp. nov., ♀, paratype; 53, A. (A.) pygmaeella ([Denis & Schiffermüller]), ♀; 54, A. (A.) pygmaeella ([Denis & Schiffermüller]), ♀; 55, A. (A.) brockeella (Hübner), collected from Shanxi Province, ♀; 56, A. (A.) brockeella (Hübner), collected from Xizang, ♀; 57, A. (A.) ivella (Haworth), ♀; 58, A. (A.) basistriata, sp. nov., ♀, paratype; 59, A. (A.) retinella Zeller, ♀. (Scales = 2.0 mm)

FIGURES 120 – 125. Eighth sternite and male genitalia excluding phallus of Argyresthia spp. 120, A. (Argyresthia) subzonata, sp. nov., slide no. LTT 12338, holotype; 121, A. (A.) pygmaeella ([Denis & Schiffermüller]), slide no. LTT 12722; 122, A. (A.) brockeella (Hübner), slide no. LTT 12548; 123, A. (A.) ivella (Haworth), slide no. LTT 12270; 124, A. (A.) basistriata, sp. nov., slide no. LTT 12271, paratype; 125, A. (A.) retinella Zeller, slide no. LTT 12717. (Scales = 0.2 mm)

FIGURES 174 – 177. Phallus of Argyresthia spp. 174, A. (Argyresthia) aphoristis Meyrick, slide no. LTT 12348; 175, A. (A.) triangulata, sp. nov., slide no. LTT 12362, paratype; 176, A. (A.) subzonata, sp. nov., slide no. LTT 12338, holotype; 177, A. (A.) pygmaeella ([Denis & Schiffermüller]), slide no. LTT 12722. (Scales = 0.2 mm)

FIGURES 221 – 232. Socii of Argyresthia spp. 221, A. (Argyresthia) decurtata, sp. nov., slide no. LTT 12334, paratype; 222, A. (A.) minutisocia, sp. nov., slide no. LTT 12438, holotype; 223, A. (A.) scalprata, sp. nov., slide no. LTT 12134, holotype; 224, A. (A.) grammosacca, sp. nov., slide no. LTT 12439, paratype; 225, A. (A.) campylotropa, sp. nov., slide no. LTT 12443, holotype; 226, A. (A.) punctuata, sp. nov., slide no. LTT 12534, holotype; 227, A. (A.) trochaula Meyrick, slide no. LTT 12335; 228, A. (A.) chlorella, sp. nov., slide no. LTT 12337, holotype; 229, A. (A.) subrimosa Meyrick, slide no. LTT 12713; 230, A. (A.) aphoristis Meyrick, slide no. LTT 12348; 231, A. (A.) triangulata, sp. nov., slide no. LTT 12362, paratype; 232, A. (A.) subzonata, sp. nov., slide no. LTT 12338, holotype. (Scales = 0.1 mm)

FIGURES 277 – 279. Female genitalia of Argyresthia spp. 277, A. (Argyresthia) triangulata, sp. nov., slide no. LTT 12091, paratype; 278, A. (A.) subzonata, sp. nov., slide no. LTT 12339, paratype; 279, A. (A.) pygmaeella ([Denis & Schiffermüller]), slide no. LTT 12724. (Scales = 0.5 mm)