Argyresthia (Argyresthia) ellipsoidea Liu, Wang & Li, 2017, sp. nov.
Creators: name: Liu, Tengteng
name: Wang, Shuxia
name: Li, Houhun
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Yponomeutidae
Argyresthia
Argyresthia ellipsoidea

description: 64. Argyresthia (Argyresthia) ellipsoidea, sp. nov. (Figs. 8, 75, 140, 196, 252, 298)
Description. Adult (Fig. 75) wingspan 9.0̄ 11.5 mm. Head with vertex pale grayish white, face pale fuscous; occiput smooth. Labial palpus pale yellow. Antenna with scape white tinged with yellow basally, yellow distally, pecten yellow; flagellum yellow, dotted with black on each flagellomere dorsally. Legs mostly yellow; foreleg with tibia and tarsus black on inner surface; midleg with femur dotted with black on distal part dorsally, tibia dotted with black near base and at middle dorsally, each tarsomere black dorsodistally; hindleg with tibia tinged with blackish gray dorsally, black distally, each tarsomere black distally. Thorax pale grayish white; tegula blackish gray. Forewing ratio 5.3; costal half gray, with dense transverse blackish-gray striae, with blackish-gray lines along vein R, dorsal half white, with scattered transverse blackish-gray striae; costa with three white spots near apex, sometimes indistinct; black spot near distal end of cell, at middle of wing on dorsum, near tornus, and at apex, spot near tornus band-shaped, touching dorsum; termen with several black spots; cilia with two grayish fuscous lines around apex, gray near tornus. Hindwing and cilia gray.
Male genitalia (Figs. 140, 196, 252): Tuba analis 2.0 times as long as width of valva. Socius covered with 26̄30 scale-like setae, bearing two short setae apically (Fig. 252). Gnathos not inflated distally, without long thick setae apically. Valva elliptical, densely covered with short setae except dorsal half in basal 1/3. Saccus shorter than width of valva, band-shaped, nearly uniform in width, rounded apically. Phallus 4.0 times as long as width of valva, nearly straight, slightly curved at distal 1/3; ductus ejaculatoris about 1/3 length of phallus (Fig. 196). Second sternite with about six micro-setae in each row; eighth sternite small, Y-shaped. Coremata absent.
Female genitalia (Fig. 298): Ovipositor 2.5 times as long as eighth segment. Anterior apophysis slightly shorter than posterior apophysis, bifurcate before middle, with branch not joined. Lamella postvaginalis slightly hourglass-shaped. Antrum funnel-shaped, 1/3 length of eighth segment. Ductus bursae denticulate from opening of ductus seminalis to anterior 1/5, with micro-denticles larger in anterior 1/5; ductus seminalis originating from posterior 1/6 of ductus bursae. Corpus bursae ovate, with micro-denticles becoming larger posteriorly; signum with basal plate large and broad, subrectangular, horns slender, extending obliquely outward to pointed apex, V-shaped.
Type material. CHINA: Holotype, Ƌ, Mt. Daming (23.43°N, 108.58°E), Nanning City, Guangxi Zhuang Autonomous Region, 1200 m, 7.viii.2011, leg. Shulian Hao and Yinghui Sun, slide no. LTT12878. Paratypes: 1Ƌ, 2♀, Mt. Pinglong (22.05°N, 107.89°E), Shangsi County, Guangxi Zhuang Autonomous Region, 510 m, 6.iv.2002, leg. Shulian Hao and Huaijun Xue, slide nos. LTT12385Ƌ, LTT12387̄8♀, LTT12385W.
Distribution. China (Guangxi).
Diagnosis. This species is similar to A. (A.) metallicolor, particularly in the male genitalia. It can be separated from A. (A.) metallicolor by forewing maculation (covered with dense transverse blackish-gray striae in A. (A.) ellipsoidea), and female genitalia (ductus seminalis from the posterior 1/6 of the ductus bursae in A. (A.) ellipsoidea). In A. (A.) metallicolor the forewing is unicolorous, and the ductus seminalis originates from before middle of the ductus bursae in the female genitalia.
Etymology. The specific name is derived from the Latin ellipsoideus, meaning elliptical, referring to the shape of the valva in the male genitalia.
description: Published as part of 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, pp. 1-135 in Zootaxa 4292 (1) on page 73, DOI: 10.5281/zenodo.827746