Chilasa osmana (Jumalon, 1967)

Sitio Katigahan, 450 meters Catmon Village, St Bernard, S Leyte, Philippines  April 1970

    Like C carolinensis, this butterfly seems to be exceedingly rare and local, though it has been found on both NE Mindanao and S Leyte Islands. Most records are from April and May, from dense lowland primary forest . Like carolinensis, it is closely allied with C veiovis (from Celebes).