1 literature reference for Papilio payeni langsonensis Fruhstorfer, 1901:

Author: Fruhstorfer, H.
Year: 1901
Title: Zwei neue Papilio aus Indochina.
Source: Fruhstorfer, H. (1901) Zwei neue Papilio aus Indochina. Societas entomologica 16 (12): 89-90.