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.

Published as part of Zhang, Di & Li, Houhun, 2023, A taxonomic review of the genus Ashibusa Matsumura, 1931 (Lepidoptera: Cosmopterigidae) from China, pp. 265-281 in Zootaxa 5380 (3) on page 267, DOI: 10.11646/zootaxa.5380.3.4, http://zenodo.org/record/10224515