Argyresthia (Argyresthia) aurilata, 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 : 69-70

59. Argyresthia (Argyresthia) aurilata , sp. nov. ( Figs. 71 , 136 , 192 , 248 , 294 )

Description. Adult ( Fig. 71 ) wingspan 14.0̄15.0 mm. Head white, face tinged with yellow. Labial palpus yellowish white, second segment mixed with gray distally. Antenna with scape white, pecten fuscous; flagellum white, ringed with grayish fuscous. Foreleg blackish fuscous on inner surface, each tarsomere fuscous on outer surface distally; midleg with femur and tibia dark fuscous on inner surface, white on outer surface, tarsus grayish fuscous, each tarsomere black dorso-distally; hindleg with tibia white on inner surface, gray laterally, tarsus white, each tarsomere gray distally. Thorax white; tegula golden. Forewing ratio 4.6; ground color golden; costa white from base to before distal 1/5, overlaid with a row of golden dots, with white spots at distal 1/5 and near apex, the latter smaller; golden streak below basal half of fold, widened distally; dorsal band white, extending to tornus; dorsal fascia golden, from before middle of wing reaching obliquely outwards to distal end of cell; tornus sometimes with a larger golden spot; cilia golden fuscous on costa and around apex, white adjacent to white spots, gray on termen and near tornus. Hindwing and cilia uniformly gray. Abdomen silvery blackish gray dorsally, yellowish gray ventrally.

Male genitalia ( Figs. 136 , 192 , 248 ): Tuba analis shorter than width of valva. Socius covered with 23̄29 scale-like setae, bearing two short setae posteriorly ( Fig. 248 ). Gnathos not inflated distally, without long thick setae apically. Valva widest at middle, dorsal margin straight, ventral margin slightly convex; a clump of long setae in disc near ventral margin, with some setae bifurcate distally or scale-like. Saccus 1/3 width of valva, distal 2/3 narrowed, linear. Phallus about 4.5 times as long as width of valva, straight ( Fig. 192 ). Second sternite with about 14 micro-setae in each row; eighth sternite Y-shaped. Coremata present.

Female genitalia ( Fig. 294 ): Ovipositor 2.7 times as long as eighth segment. Anterior apophysis 3/4 length of posterior apophysis, bifurcate at distal 1/3, with branches fused, forming ventral margin of ostium bursae. Lamella postvaginalis hourglass-shaped. Antrum funnel-shaped, 7/10 length of eighth segment; ductus seminalis originating from middle of ductus bursae. Corpus bursae oval, densely denticulated on posterior half; signum with basal plate band-shaped, horns extending obliquely outward, gradually narrowed, anterior margin slightly arched inward.

Type material. CHINA: Holotype, Ƌ, Zhongdian (27.59°N, 99.79°E), Yunnan Province, 3150 m, 14.vii.2001, leg. Houhun Li and Xinpu Wang . Paratypes: 4Ƌ, 3♀, same data as holotype, slide nos. LTT12086Ƌ, LTT12087 ♀, LTT12507 ♀, LTT12508Ƌ, LTT12729W.

Other material: 1Ƌ (without abdomen), same data as holotype.

Distribution. China (Yunnan).

Diagnosis. This species is close to A. (A.) cuprea , sp. nov., superficially. It differs from the latter in having a golden forewing with a ratio of 4.6, in the male genitalia by having the saccus narrowed and linear in the distal 2/3; and in the female genitalia by having an hourglass-shaped lamella postvaginalis. In A. (A.) cuprea , sp. nov., the forewing is bronze fuscous with a ratio of 5.0; in the male genitalia the saccus is triangular or nearly so; and in the female genitalia the lamella postvaginalis is narrow triangular or subrectangular.

Etymology. The specific name is derived from the Latin prefix aur -, meaning golden, and latus, meaning wide, referring to the golden forewing wider than its congener A. (A.) cuprea , sp. nov.

Figures

FIGURES 68 – 75. Adults of Argyresthia spp. 68, A. (Argyresthia) beta Friese & Moriuti, ♂; 69, same species, ♀; 70, A. (A.) cuprea, sp. nov., ♀, paratype; 71, A. (A.) aurilata, sp. nov., ♂, holotype; 72, A. (A.) convexa, sp. nov., ♂, holotype; 73, A. (A.) kaoyaiensis Moriuti, ♀; 74, A. (A.) dislocata Meyrick, ♀; 75, A. (A.) ellipsoidea, sp. nov., ♂, holotype. (Scales = 2.0 mm)

FIGURES 132 – 137. Eighth sternite and male genitalia excluding phallus of Argyresthia spp. 132, A. (Argyresthia) lata, sp. nov., slide no. LTT 12279, paratype; 133, A. (A.) alpha Friese & Moriuti, slide no. LTT 12670; 134, A. (A.) beta Friese & Moriuti, slide no. LTT 12672; 135, A. (A.) cuprea, sp. nov., slide no. LTT 12489, paratype; 136, A. (A.) aurilata, sp. nov., slide no. LTT 12508, paratype; 137, A. (A.) convexa, sp. nov., slide no. LTT 12502, holotype. (Scales = 0.2 mm)

FIGURES 190 – 193. Phallus of Argyresthia spp. 190, A. (Argyresthia) beta Friese & Moriuti, slide no. LTT 12672; 191, A. (A.) cuprea, sp. nov., slide no. LTT 12489, paratype; 192, A. (A.) aurilata, sp. nov., slide no. LTT 12508, paratype; 193, A. (A.) convexa, sp. nov., slide no. LTT 12502, holotype. (Scales = 0.2 mm)

FIGURES 245 – 252. Socii of Argyresthia spp. 245, A. (Argyresthia) alpha Friese & Moriuti, slide no. LTT 12670; 246, A. (A.) beta Friese & Moriuti, slide no. LTT 12672; 247, A. (A.) cuprea, sp. nov., slide no. LTT 12489, paratype; 248, A. (A.) aurilata, sp. nov., slide no. LTT 12508, paratype; 249, A. (A.) convexa, sp. nov., slide no. LTT 12502, holotype; 250, A. (A.) kaoyaiensis Moriuti, slide no. LTT 12369; 251, A. (A.) dislocata Meyrick, slide no. LTT 12376; 252, A. (A.) ellipsoidea, sp. nov., slide no. LTT 12878, holotype. (Scales = 0.1 mm)

FIGURES 293 – 295. Female genitalia of Argyresthia spp. 293, A. (Argyresthia) cuprea, sp. nov., slide no. LTT 12490, paratype; 294, A. (A.) aurilata, sp. nov., slide no. LTT 12507, paratype; 295, A. (A.) convexa, sp. nov., slide no. LTT 12728, paratype. (Scales = 0.5 mm)