Three species of Sino-Himalayan Euthalia are illustrated with description of main specific characters and notes on geographic variations. Figures of male genitalia are provided. E. strephon Main distinguishing characters are: (1) The upper surface of the antenna black except the tip segment, which is slightly reddened. (2) Upperside forewing, the yellowish band not clearly defined. (3) Upperside hindwing, the yellowish band evenly curved and roughly parallel to the termen. (4) The male genitalia are characterized as follows: a. The tegumen relatively low in height and the saccus well developed for a member of patala group. b. The uncus rather slender with the pointed tip abruptly bent downwards. c. The valva with three sharp teeth around the distal end. This species is one of the rare Chinese Euthalia formerly known only from Sze-chuan, but recently it was recorded in Zhe-jiang (Che-kiang). E. khama Main distinguishing characters are: (1) The uppers surface of the antenna entirely black. (2) Forewing apically pointed and produced. (3) Upperside hindwing, the yellowish band strongly narrowed below space 5 and not parallel to the termen. (4) The male genitalia are characterized as follows: a. The tegumen tall, over twice the height of the vinculum. b. The dorsum long, with the distal portion of the uncus almost straight. c. The valva with the distal end narrowly elongated. This species is suggestive of the species belonging to the thibetana-undosa complex, but is not closely related to them, having the pattern of the male genitalia different from that of the complex. E. kardama This species is quite unique in the wing contour and the scheme of the pattern. Otherwise the main characters are as follows: (1) Distal four or five segments of the antenna ochreous orange, well contrasting with the the blackish portion. (2) The male genitalia are characterized as follows: a. The dorsum long and the saccus very short. b. The valva with numerous teeth around the tapered distal end. This species is the commonest of the larger Chinese Euthalia, although it seems to be limited to land-bound provinces.
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