Celaenorrhinus major Hsu, 1990 Figs.9–12, 51–56 Celaenorrhinus oscula: Shirôzu, 1960: 382 –383. Celaenorrhinus osculus major Hsu, 1990: 143 (Type locality: Taiwan). Celaenorrhinus major: Devyatkin, 2000: 210. Diagnosis. Forewing length 19–22mm. Wings yellowish brown. Forewing upperside with subapical spot in space R3 larger than that in space R5, the spot in space R4 the smallest; the spot in M3 subequal to spots in space CuA2; forewing underside with basal striping much reduced. Hindwing upperside with basal yellow hairs well developed; yellow spot in space Rs faint. Male genitalia (Figs. 51–55). Gnathos highly developed, densely covered with spines and truncated end; valva nearly triangular, narrowed toward tip, dorso-distal portion U-shaped with small projections; aedeagus slender, with a long cornuti; juxta deeply bifid, deeply V-shaped, long branches serrated at dorsal margin. Female genitalia (Fig. 56). Papillae anales triangular, covered with hairs; posterior apophyses slender and long; posterior lamella rectangular; ductus bursa long, sclerotized, distal part U-shaped; bursa copulatrix elongate, membranous. Material examined. 3♂, Tianxiang, Taiwan, 1-VII-1987, Ra [Luo]; 1♀, Xinzhu County, Taiwan, 8-VIII-1989, Ra [Luo]. Distribution (Fig. 68). China (Taiwan). Remarks. The species, which was recorded by Shirôzu (1960) as C. oscula from Taiwan, was described as a new subspecies of C. oscula by Hsu (1990). Devyatkin (2000) raised major to species status, having confirmed his treatment by Hsu. We examined four specimens from Taiwan. Its wing pattern and male genitalia (Figs. 9–12, 51–55) show that it resembles those of C. osculus from Guangdong (Fig. 7–8, 46–50), but can be distinguished from the latter with the following characters: forewing upperside, in major, spots in cell, M3 and CuA1 closer than those in osculus; two spots in space CuA2 smaller and the distance between two spots wider than that in osculus; male genitalia, valva with dorso-distally U-shaped at the tip; juxta deeply bifid, branches almost equal to entire juxta length in major, but roughly equal to 1/2 length of juxta in osculus. According to these characters examined, we agree with Devyatkin (2000) and treat major as a good species. The female genitalia are described and illustrated for the first time.

Published as part of Huang, Zhen-Fu, Chiba, Hideyuki, Fei, Wen & Fan, Xiao-Ling, 2014, The maculosus group of the genus Celaenorrhinus Hübner, 1819 from China, with discovery of female C. kuznetsovi Devyatkin, 2000 (Lepidoptera: Hesperiidae: Pyrginae), pp. 279-290 in Zootaxa 3881 (3) on pages 285-286, DOI: 10.11646/zootaxa.3881.3.6, http://zenodo.org/record/230199