Argyresthia (Argyresthia) umbrinistrigata, 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 : 61-62

50. Argyresthia (Argyresthia) umbrinistrigata , sp. nov. ( Figs. 62 , 128 , 184, 240 , 286 )

Description. Adult ( Fig. 62 ) wingspan 10.5̄11.0 mm. Head white, face golden yellow. Labial palpus yellow, mixed with fuscous laterally. Antenna with scape white, pecten pale yellowish fuscous; flagellum white, ringed with black. Foreleg blackish fuscous on inner surface, tibia dotted with black near base, at middle, and distolaterally, each tarsomere black distally on outer surface, remainder yellowish white; midleg mostly yellowish white, tibia dotted with black near base, at middle, and at distal on dorsal surface, first tarsomere dotted with black at middle and at apex on dorsal surface, other tarsomeres black at apex dorsally; hindleg yellowish fuscous mixed with gray, except each tarsomere blackish gray distally. Thorax white, golden brown laterally; tegula golden brown. Forewing ratio 4.0; yellowish brown, with deep yellowish brown striae and dots; costa with ten dark fuscous transverse striae on basal 2/3; dorsum white at base, dorsal streak deep yellowish brown, from before middle of wing to distal 1/3 of costa, not conspicuously distinguishable from ground color; cilia brown, darker at base and distally, dark gray near tornus. Hindwing and cilia uniformly gray. Abdomen grayish fuscous dorsally, dark yellowish fuscous ventrally.

Male genitalia ( Figs. 128 , 184, 240 ): Tuba analis slightly shorter than width of valva. Socius covered with 19̄25 scale-like setae, bearing a single seta posteriorly ( Fig. 240 ). Gnathos not inflated distally, without long thick setae apically. Valva more or less ovate, widest at basal 1/3, dorsal margin slightly arched at basal 2/5, straight in distal 3/5; row of long thick setae from disc near ventral margin to distal area, with setae near apex of ventral margin shorter and sparser. Saccus shorter than width of valva, triangular, blunt apically. Phallus nearly straight, 3.4 times as long as width of valva ( Fig. 183). Second sternite with about eight micro-setae in each row; eighth sternite Y-shaped. Coremata present.

Female genitalia ( Fig. 286 ): Ovipositor 2.8 times as long as eighth segment. Anterior apophysis 4/5 length of posterior apophysis, bifurcate before middle, with branches reaching near middle, not joined. Lamella postvaginalis subrectangular. Antrum funnel-shaped, 3/7 length of eighth segment. Ductus bursae spinulate near and before opening of ductus seminalis and near corpus bursae; ductus seminalis originating from anterior 2/5 of ductus bursae. Corpus bursae round, densely denticulated, sparser anteriorly; signum with basal plate band-shaped, slightly widened medially, horns long and slender, extending obliquely outward, C-shaped.

Type material. CHINA: Holotype, Ƌ, Jinding (27.95°N, 108.62°E), Mt. Fanjing , Guizhou Province, 2100 m, 31.vii.2001, leg. Houhun Li and Xinpu Wang . Paratypes: 4Ƌ, 15♀, same data as holotype, except 30, 31.vii.2001, slide nos . LTT12096♂, LTT12097♀, LTT12526♂, LTT12718♀, LTT12526W; 2♂, 1♀, Guadun (27.74°N, 117.65°E), Mt. Wuyi , Fujian Province, 1100 m, 29.vii.2008, leg. Weichun Li, Yongli Sun and Haiyan Bai, slide no . LTT12719Ƌ.

Other material: 7Ƌ (without abdomen), same data as holotype, except 30, 31.vii.2001.

Distribution. China (Fujian, Guizhou).

Diagnosis. The diagnosis is given under A. (A.) umbrina , sp. nov.

Etymology. The specific name is derived from the Latin umbrinus, meaning brown, and strigatus, meaning streak, referring to the yellowish brown forewing with a deep yellowish brown dorsal streak before middle of the wing.

Figures

FIGURES 60 – 67. Adults of Argyresthia spp. 60, A. (Argyresthia) longalbella, sp. nov., ♂, holotype; 61, A. (A.) umbrina, sp. nov., ♀, paratype; 62, A. (A.) umbrinistrigata, sp. nov., ♀, paratype; 63, A. (A.) angusta Moriuti, ♀; 64, A. (A.) surrecta, sp. nov., ♂, holotype; 65, A. (A.) lanosa, sp. nov., ♂, holotype; 66, A. (A.) lata, sp. nov., ♀, paratype; 67, A. (A.) alpha Friese & Moriuti, ♀. (Scales = 2.0 mm)

FIGURES 126 – 131. Eighth sternite and male genitalia excluding phallus of Argyresthia spp. 126, A. (Argyresthia) longalbella, sp. nov., slide no. LTT 12274, paratype; 127, A. (A.) umbrina, sp. nov., slide no. LTT 12546, paratype; 128, A. (A.) umbrinistrigata, sp. nov., slide no. LTT 12526, paratype; 129, A. (A.) angusta Moriuti, slide no. LTT 12289; 130, A. (A.) surrecta, sp. nov., slide no. LTT 12357, paratype; 131, A. (A.) lanosa, sp. nov., slide no. LTT 12664, paratype. (Scales = 0.2 mm)

FIGURES 233 – 244. Socii of Argyresthia spp. 233, A. (Argyresthia) pygmaeella ([Denis & Schiffermüller]), slide no. LTT 12722; 234, A. (A.) brockeella (Hübner), slide no. LTT 12548; 235, A. (A.) ivella (Haworth), slide no. LTT 12270; 236, A. (A.) basistriata, sp. nov., slide no. LTT 12271, paratype; 237, A. (A.) retinella Zeller, slide no. LTT 12717; 238, A. (A.) longalbella, sp. nov., slide no. LTT 12274, paratype; 239, A. (A.) umbrina, sp. nov., slide no. LTT 12546, paratype; 240, A. (A.) umbrinistrigata, sp. nov., slide no. LTT 12526, paratype; 241, A. (A.) angusta Moriuti, slide no. LTT 12289; 242, A. (A.) surrecta, sp. nov., slide no. LTT 12357, paratype; 243, A. (A.) lanosa, sp. nov., slide no. LTT 12664, paratype; 244, A. (A.) lata, sp. nov., slide no. LTT 12279, paratype. (Scales = 0.1 mm)

FIGURES 286 – 289. Female genitalia of Argyresthia spp. 286, A. (Argyresthia) umbrinistrigata, sp. nov., slide no. LTT 12718, paratype; 287, A. (A.) angusta Moriuti, slide no. LTT 12654; 288, A. (A.) surrecta, sp. nov., slide no. LTT 12462, paratype; 289, A. (A.) lanosa, sp. nov., slide no. LTT 12649, paratype. (Scales = 0.5 mm)