Ashibusa, Matsumura, 1931

Zhang, Di & Li, Houhun, 2023, A taxonomic review of the genus Ashibusa Matsumura, 1931 (Lepidoptera: Cosmopterigidae) from China, Zootaxa 5380 (3), pp. 265-281 : 267

Key to the Chinese Ashibusa species based on the male genitalia

1. Right brachium without dorsal process ( Fig. 15 )............................................ A. improjecta sp. nov. Right brachium with one or two dorsal processes............................................................ 2

2. Right brachium with two dorsal processes ( Fig. 13 )....................................... A. biniprocessa sp. nov. Right brachium with one dorsal process................................................................... 3

3. Dorsal process of right brachium blunt at apex (Sinev, 1999: 277, fig. 9)................................ A. jezoensis Dorsal process of right brachium pointed at apex............................................................ 4

4. Dorsal process of right brachium triangular ( Fig. 14 )...................................... A. dilatirotunda sp. nov. Dorsal process of right brachium thorn shaped.............................................................. 5

5. Valva straight........................................................................................ 6 Valva produced outward distally......................................................................... 7

6. Phallus with an odontoid process at apex ( Fig. 12 )......................................... A. apicodonta sp. nov. Phallus without an odontoid process at apex ( Zhang & Li, 2009: 338, fig. 8)......................... A. clavativalvula

7. Right valvella short digitate............................................................................. 8 Right valvella absent.................................................................................. 9

8. Right brachium obtusely produced outward medially ( Fig. 17 )................................ A. longispina sp. nov. Right brachium not produced medially ( Fig. 19 )....................................... A. subfalcativalva sp. nov.

9. Phallus widened before apex, gradually narrowed from before apex to apex...................................... 10 Phallus tubular or narrowed to apex..................................................................... 11

10. Pleural lobes of eighth segment oval shaped, dorsal process 1/5 length of right brachium ( Zhang & Li, 2009: 338, fig. 7)............................................................................................... A. aculeata Pleural lobes of eighth segment subquadrate, dorsal process 1/4 length of right brachium ( Zhang & Li, 2009: 338, fig. 9)............................................................................................... A. flavalba

11. Phallus tubular...................................................................................... 12 Phallus narrowed to apex.............................................................................. 13

12. Valva with distal part expanded rectangularly ( Zhang & Li, 2009: 338, fig. 10).......................... A. lativalvula Valva with distal part expanded elliptically ( Fig. 16 )....................................... A. ledongensis sp. nov.

13. Phallus with forked apex ( Zhang & Li, 2009: 340, fig. 11)............................................ A. sinensis Phallus not forked at apex............................................................................. 14

14. Valva subfalcate, distal half slightly expanded ( Zhang & Li, 2009: 340, fig. 12)........................ A. subelliptica Valva club shaped, distal 1/3 expanded ( Fig. 18 )........................................ A. similativalvula sp. nov.

Figures

FIGURES 12‒15. Male abdomen and genitalia of Ashibusa spp. All holotypes. 12. A. apicodonta sp. nov., slide No. ZD21383; 13. A. biniprocessa sp. nov., slide No. ZD21454; 14. A. dilatirotunda sp. nov., slide No. ZD21398; 15. A. improjecta sp. nov., slide No. ZD21523. Scales = 0.2 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.