Euthalia sahadeva complex (2 species) and their allies are illustrated with descriptions of main specific characters, notes on geographic variation and bionomics. Figures of male genitalia are provided. E. sahadeva Complex This species complex comprises 2 species, E. sahadeva and E. kosempona. Both the species have an oblique fascia running from the middle of costa on the forewing, and a central fascia on the hindwing. The former white or ivory in ♀, the latter reduced to a couple of spots in the same sex. In spite of their sexual dimorphism, the scheme of wing patterns is identical between the sexes. The male genitalia are characterized as follows: a. The tegumen relatively tall, but less than twice the height of the vinculum. b. The saccus rather long for the patala group. c. The valva slender, with well developed sharp teeth around the distal end. d. The phallus small, usually 2.0〜2.5mm in length. The above characters a, b, c are clearly different from those of E. thibetana complex. E. sahadeva Main distinguishing characters are: (1) The inner side of the antenna ochreous in ♂, almost black in ♀, the tip yellowish in both the sexes. (2) Upperside hindwing, the central fascia catenated, with a broad pale area along the outer edge of the fascia in ♂. (3) Underside hindwing, submarginal series of dark spots more or less sagittate, or dot-like. This species is a denizen of submontane to montane forests abound in Quercus trees. E. kosempona The names shinnin Fruhst., 1908 and kosempona Fruhst., 1908 were published in the same paper and on the same date as one another, the former representing ♂ and the latter ♀ of the same species. The first reviser, if strictly interpreted, should be Mell (1934), who manifestly stated 'kosempona Fruhst. (♂=shinnin Fruhst.)'. This species replaces sahadeva in S. China and Taiwan. Main distinguishing characters are: (1) The colour of the antenna as in sahadeva, but with the distal yellow portion smaller. (2) Upperside hindwing, the central fascia forming a broad band, with a narrow pale area along the outer edge in ♂. (3) Underside hindwing, submarginal dark fascia more or less separated by pale veins, usually with a black dot in each space. The male genitalia are similar to those of sahadeva, but the valva with differently placed teeth around the distal end. This species frequents forest edges in submontane zones, flying in company with E. formosana, Abrota ganga and Chitoria chrysolora, etc. in Taiwan. The larval food plant is said to be Quercus. E. hebe Main distinguishing characters are: (1) The club of the antenna black, the shaft dark ochreous. (2) Forewing, the yellowish spot in space 2 shifted outwards, not overlapping the spot in space 1b. (3) Upperside hindwing, the central fascia without pale area along the outer edge. The male genitalia are characterized as follows: a. The tegumen relatively tall, almost twice the height of the vinculum. b. The valva slender, with rather long 6 teeth around the distal end. c. The uncus longer than those of sahadeva complex, and differently shaped in lateral view (fig. 10). This species was often confused with E. kosempona but cannot be connected with it, as it is quite different from kosempona both in facies and genitalia. Addendum E. iva This very rare species was illustrated in Yadoriga 141 (1990), but the male genitalia were not available at that time. In January 1991, Col. J.N. Eliot kindly sent a male which was collected by him in 1934 (fig. 7). The male genitalia are characterized as follows: a. The tegumen tall, over twice the height of the vinculum. b. The saccus rather long for the patala group. c. The valva similar to that of sahadeva, but with 8 teeth all directed downwards. d. The gnathos slender, with weakly developed cochlear. Judging from the features of the wing patterns and the male genitalia, this species may be placed near sahadeva complex.

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