Ashibusa longispina Li, 2023

Zhang, Di & Li, Houhun, 2023, A taxonomic review of the genus Ashibusa Matsumura, 1931 (Lepidoptera: Cosmopterigidae) from China, Zootaxa 5380 (3), pp. 265-281 : 276-278

Ashibusa longispina Li , sp. nov.

urn:lsid:zoobank.org:act:03C08FEB-AB8B-4C12-A716-5423B7501305

( Figs 9 , 17 , 25 )

Type material. CHINA, Hainan: Holotype ♂, Jianfengling , Ledong County (18.44°N, 108.52°E), 770 m, 31.V.2015, leg. PX Cong et al., slide No. ZD 21529.

Paratypes: 1♀, Jianfengling , Ledong County (18.44°N, 108.52°E), 770 m, 30.V.2015, leg. PX Cong et al., slide No. ZD 21533 ; 1♂, Jianfengling , 940 m, 6.VI.2007, leg. ZW Zhang & WC Li, slide No. ZD 21525 ; 1♂, Yaxing Village , Nankai Town, Baisha County (19.02°N, 109.40°E), 312 m, 30.VII.2015, leg. QY Wang et al., slide No. ZD 21528 .

Diagnosis. The new species can be distinguished from its congeners by the forewings with basal 4/5 yellowish brown and distal 1/5 black; the right brachium of the socius slightly produced outward medially, and the long spine-shaped dorsal process of the right brachium in the male genitalia; and the annular sterigma in the female genitalia.

Description. Adult ( Fig. 9 ). Wingspan 10.0– 12.5 mm.

Head. Vertex and frons white, vertex mixed with yellowish-brown scales. Antennae pale yellow, scape white terminally, flagellum alternated with brown dorsally. Labial palpi white; second palpomere mixed with yellowish brown dorsally, with a longitudinal yellowish-brown line ventrally; third palpomere yellowish brown at basal 2/5 and near apex.

Thorax. Dorsum of mesothorax and tegulae yellow, with diffused white and brown scales. Forewings yellowish brown with black scales in basal 4/5, black in distal 1/5; ill-defined large black speckle at middle of fold, small black spot near end of fold; tiny black spot near outer margin of discal cell, surrounded by white scales; cream fascia extending from 1/2 of costal margin to dorsum; white streak from before distal 1/5 of costal margin obliquely outward to termen; white streak from outside of preceding white streak extending along termen to apical angle; fringes yellowish brown, mixed with black along distal 1/5. Hindwings and fringes brown. Foreleg with coxa white mixed with brown scales, femur and tibia yellowish brown, tarsus yellow; midleg with femur yellowish brown, tibia with whorls of bristles pale yellow basally, black distally, tarsus yellow, first and fourth tarsomeres white at apex; hindleg with femur yellowish brown, tibia with white-tipped whorls of bristles pale yellow basally, black mottled with pink distally, tarsus yellowish brown, 4–5 tarsomeres mixed with pink scales.

Male abdomen and genitalia ( Fig. 17 ):

Male abdomen. Pleural lobes of eighth segment 3/5 length of valva.

Male genitalia. Socius with right brachium equally wide from near base to before middle, obtusely produced outward medially, slightly narrower distally, pointed at apex; dorsal process arising from beyond middle, long spine shaped, 1/3 length of right brachium. Left brachium 1/2 length of right brachium, narrowed to rounded apex, bent outward near apex. Valvae rod shaped, slightly narrowed at middle, distal 1/3 expanded elliptically, obliquely outward, with dense setae in distal half ventrally. Left valvella broadened distally, rounded at apex, 5/6 length of phallus; right valvella short, digitate, 1/7 length of phallus. Phallus straight, narrowed distally.

Female genitalia ( Fig. 25 ). Apophyses posteriores twice as long as apophyses anteriores. Sterigma annular. Ductus bursae as long as apophyses posteriores, membranous. Corpus bursae ovoid, shorter than ductus bursae; entrance at posterior 1/4 of corpus bursae; signum absent.

Distribution. China (Hainan).

Etymology. The specific epithet of the new species is derived from the Latin longispinus, referring to the long spine-shaped dorsal process on the right brachium of the socius.

Figures

FIGURES 4‒11. Adults of Ashibusa spp. All holotypes and males. 4. A. apicodonta sp. nov.; 5. A. biniprocessa sp. nov.; 6. A. dilatirotunda sp. nov.; 7. A. improjecta sp. nov.; 8. A. ledongensis sp. nov.; 9. A. longispina sp. nov.; 10. A. similativalvula sp. nov.; 11. A. subfalcativalva sp. nov.. Scales = 2.0 mm.

FIGURES 16‒19. Male abdomen and genitalia of Ashibusa spp.All holotypes. 16. A. ledongensis sp. nov., slide No. ZD21400; 17. A. longispina sp. nov., slide No. ZD21529; 18. A. similativalvula sp. nov., slide No. ZD21537; 19. A. subfalcativalva sp. nov., slide No. ZD21404. Scales = 0.2 mm.

FIGURES 24–27. Female genitalia of Ashibusa spp. All paratypes. 24. A. ledongensis sp. nov., slide No. ZD21417; 25. A. longispina sp. nov., slide No. ZD21533; 26. A. similativalvula sp. nov., slide No. ZD21442; 27. A. subfalcativalva sp. nov., slide No. ZD21514. Scales = 0.5 mm.