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Pic 1 Female I. helicon. Note forewing postdiscal band staggered in an arc. Hindwing slightly angular. Probably slightly deformed.
pic 2 Male Nacaduba beroe. Note somewhat broad forewing submarginal band with lower inner margin not indented by the veins; large submarginal spot in space 6 on the hindwing; wing base noticeably darkened.

TL Seow