Abrostola wanglangensis, Hu & Yu & Huang, 2021

Hu, Yan-Qing, Yu, Yong & Huang, Zhen-Fu, 2021, Notes on the species of Abrostola Ochsenheimer, 1816 (Lepidoptera, Noctuidae Plusiinae) from China, with the description of a new species, Zootaxa 4942 (1), pp. 141-145 : 144

Abrostola wanglangensis sp. nov.

( Figs 7 & 8 )

Type material. Holotype. male, Wanglang Natural Reserve, Pingwu County, Mianyang , Sichuan Prov., 24– 28.vi.2019, coll. Yanqing Hu, in SWUAT . Paratype. 1 male, with the same data as the holotype in SWUST .

Diagnosis. Externally, A. wanglangensis hardly be distinguished from A. korbi and A. pacifica without the highquality photos of adult because they have a rather uniform forewing pattern. However, their male genitalia have a great diagnostic difference. A. wanglangensis has a short valva, a big and triangular protuberance at the ventral margin of the valva, a slender harpe, a short saccus, a finger-shaped process at the base of the vesica, a circle of cornuti in the middle of the vesica and a band of cornuti at the distal end of the vesica. Compared with A. wanglangensis , A. korbi has a long valva, a small protuberance at the ventral margin of the valva, a thick harpe, a relatively long saccus, a triangular process at the base of the vesica, two separated groups of cornuti in the middle of the vesica and a scobinate patch at the distal end of the vesica. Compared with A. wanglangensis and A. korbi , A. pacifica has a high similarity in the configuration with A. korbi except aedeagus, which is lacking of cornuti or scobinate patch at the distal end of the vesica.

Description. Adult ( Fig. 7 ). Wingspan 33–35 mm. Head dark brown; antenna grayish brown, filiform in male; labial palpus short, stretched forward, mostly covered with brown scales. Thorax covered with long and grayish brown hairs, collar brown. Abdomen blackish brown. Forewing ground color dark grayish black, antemedial area mostly grayish brown and subterminal area dark grayish black and brownish white, two black lines at apical angle; basal line black, zigzag; antemedial line black, arcuate, with a brown line inside; medial line poorly visible; orbicular stigma black, 8-shaped, reniform stigma black; postmedial line brownish black and sinuous at the front part, black and arcuate at the latter part, with brown line outside; subterminal line grayish white, straight; terminal line black; cilia grayish black. Hindwing mostly covered with dark brown suffusion; cilia gray mixed with dark brown.

Male genitalia ( Fig. 8 ). Uncus slender, tapered distally and pointed at apex; tegumen short and broad; valva tapered distally, round at top, with a semicircular hump at dorsal margin and a triangular protuberance at ventral margin; harpe long, slender, curved into the semicircular hump of the valva; saccus U-shaped. Aedeagus short; vesica with a finger-shaped process basally, a circle of cornuti medially and a band of cornuti distally.

Female. Unknown.

Distribution. China (Sichuan).

Etymology. The species name is derived from the name of the type-locality of the new species.

Remarks. Behounek et al. (2010) reported that Abrostola pacifica Dufay, 1960 is a new synonym of Abrostola korbi Dufay, 1958 . Kobayashi (2009) illustrated the male and female genitalia of these two studied species as valid species.

Figures

FIGURES. 1–8. Abrostola spp., male adult & male genitalia. 1. A. abrostolina. 2. A. anophioides. 3. A. obscura. 4. A. proxima major. 5. A. triplasia. 6. A. ussuriensis. 7 & 8. A. wanglangensis sp.nov. 7. male adult (holotype); 8. male genitalia (holotype).