Key to species of the genus Coptotriche in China based on male genitalia 1. Phallus without spines................................................................................. 2 - Phallus with spines................................................................................... 3 2. Phallus curved backward near base, tulip-shaped part of phallus with triangular process anterolaterally (Fig. 5)............................................................................................ C. basicurvata sp. nov. - Phallus straight, tulip-shaped part of phallus without process anterolaterally (Fig. 6)................. C. basilata sp. nov. 3. Valva straight, obtuse apically........................................................................... 4 - Valva sinuate, produced dorsoapically (Xu et al. 2021: 81, figs 19‒20)................................... C. turpinia 4. Vincullum not extended anteriorly, or shortly extended less than 1/2 length of uncus................................ 5 - Vincullum greatly extended as long as uncus anteriorly (Diškus 1998: 28, fig. 3)........................ C. gaunacella 5. Valva gradually narrowed from base to apex, concave at basal 1/3 on ventral margin (Xu et al. 2021: 77, figs 12, 17‒18)........................................................................................... C. camptotheca - Valva subparallel sided basally, widest beyond middle........................................................ 6 6. Tulip-shaped part of phallus right angled anterolaterally...................................................... 7 - Tulip-shaped part of phallus not right angled anterolaterally (Fig. 7)............................ C. brevissima sp. nov. 7. Valva broadened before rounded apex (Puplesis & Diškus 2003: 116, figs 272‒273)...................... C. japoniella - Valva gradually narrowed from beyond middle to rounded apex (Fig. 8).................................. C. minuta

Published as part of Zhang, Xiuying, Sun, Hao & Li, Houhun, 2025, Preliminary taxonomic review of the genus Coptotriche Walsingham, 1890 (Lepidoptera: Tischeriidae) in China, including descriptions of three new species, pp. 243-254 in Zootaxa 5679 (2) on page 245, DOI: 10.11646/zootaxa.5679.2.4, http://zenodo.org/record/16984031