Jinhaku Sonan’s skipper type collection deposited at Taiwan Agricultural Research Institute (Lepidoptera: Hesperiidae) Author Chiba, Hideyuki Author Hsu, Yu-Feng Author Tsukiyama, Hiroshi Author Lo, Philip Yik-Fui Author Chen, Chien-Ren Author Wang, Shou-Ming text Zootaxa 2009 2202 48 58 journal article 10.5281/zenodo.189654 320aec2f-ea3b-427e-a2a7-bdd4969cb030 1175-5326 189654 Tagiades menaka kotoshona Sonan, 1936 Zephyrus 6:212. Labels: “ Tagiades / menaka / kotoshoana Sonan DET. J. SONAN,” “ Kotosho/ 10 III – 14 IV 1920 / J. Sonan/ Col. T. Okuni,” “ No. 51,” “ Type [in red].” A single male specimen was designated as the holotype in the original description and the specimen bearing the type label matches the description ( Fig. 7–9 ). Evans (1949) listed kotoshona as a synonym of T. litigiosa litigiosa Möschler, 1878 . Again, no reason was given. Umeno (1937) pointed out that no diagnostic features could be identified between kotoshona and “ Tagiades menaka martinus Pätz [sic].” Shirôzu (1943) subsequently treated kotoshona as a synonym of T. trebellius martinus Plötz, 1884 . This treatment was followed by subsequent authors (e. g. Shirôzu 1960 ; Chiba et al. 1992 ; Tsukiyama et al. 1997 ). The type shows the characteristics of T. trebellius martinus , which is the only Tagiades found in Kotosho (= Lanyu) ( Shirôzu 1960 , Yamanaka 1980 ), a small island off the southeastern coast of Taiwan . Neither T. menaka Moore, 1865 nor litigiosa has been confirmed from Taiwan ( Chiba et al. 1992 ). The name kotoshona Sonan, 1936 is regarded as a junior subjective synonym of T. trebellius martinus Plötz, 1884 in the present study.