38a. Troides helena cerberus (C. Felder & R. Felder, 1865)

Papilio cerberus C. Felder & R. Felder, 1865; Reise ̂st. Fregatte Novara, 1: 19; TL: ‘ India septentrionalis: Assam, Bangalia’ [Assam, Bengal, N. India].

Ornithoptera helena euthycrates Fruhstorfer, 1913; Dt. ent. Z. Iris., 27 (3): 134; TL: ‘ Tonkin, Than-Moi’ [Than Moi, N. Vietnam].

Troides helena cerberus ♀ f. chongkiakwangi Tung, 1982; Tokurana. 4: 7; TL: ‘Malay Pen’. [IFS]

Distribution: found in the lowlands in S.W., S., to S.E. Yunnan; also found in S. China, N. India to Indochina and the Malay Peninsula.