73a. Papilio chaon chaon Westwood, 1845

Pap. [ilio] chaon dispensator Fruhstorfer, 1908; Ent. Z., 22 (18): 73; TL: ‘Tonkin’ [N. Vietnam].

Pap. [ilio] chaon duketius Fruhstorfer, 1908; Ent. Z., 22 (18): 73; TL: ‘Siam’ [Thailand].

Pap. [ilio] chaon chaon ♀ forma leucacantha Fruhstorfer, 1908; Ent. Z., 22 (18): 73; TL: ‘Sikkim’ [N.E. India]. [IFS]

P. [apilio] chaon chaon ab. paryphanta Jordan, 1909; in Seitz, Gross-Schmett. Erde, 9, (27): 53; TL: ‘Cherra Punji, Assam’ [Cherrapunji, Meghalaya, N.E. India]. [IFS]

Papilio chaon ab. xanthia Boullet & Le Cerf, 1912; Bull. Soc. ent. Fr., 1912 (11): 247; TL: ‘ Cambodge, Pnom-Penh’ [Phnom Penh, Cambodia]. [IFS]

P. [apilio] ch.[aon] chaon ab. tripunctata Dufrane, 1936; Lambillionea, 36 (2): 42; TL: ‘Sikkim’ [N.E. India]. [IFS]

P. [apilio] ch.[aon] chaon ab. pseudochaonulus Dufrane, 1936; Lambillionea, 36 (2): 42; TL: ‘Sikkim’ [N.E. India]. [IFS]

Distribution: commonly found in low altitude tropical areas in W. to S.E. Yunnan; also found in S. China, as well as Nepal to Myanmar and Indochina.

Note: Condamine et al. (2023) confirmed the identity of Papilio chaon as a separate species from P. nephelus, found in the Malay Peninsular, Sumatra, Borneo and Java. Thus, the species in Yunnan is correctly P. chaon, with the nominotypical subspecies and ssp. rileyi present in the province.