Papilio nubilus is a rare species of swallowtail butterfly from the genus Papilio that can be found in Borneo.[1]
Previously listed as a distinct species (D'Abrera 1982, Munroe 1961), but now regarded (by Collins & Morris 1985, Tsukada & Nishiyama 1982: 307) as an interspecific hybrid between Papilio nephelus and Papilio polytes.
Similar to Papilio nephelus; Male small, the subapical spots of the forewing not sharply defined eitherabove or beneath, more or less dusted with black, the 3. and 4. spots placed much nearer to the cell than inP. nephelus, the 4. far removed from the distal margin; hindwing above with white discal band consisting of 7 patches, of which the 3. and 4. are the longest, no submarginal spots above, beneath a complete row, all white,smaller than in P. nephelus, especially the 4., 5. and 6. The female not known. Borneo and Sumatra.
Papilio nubilus is a member of the helenus species-group. Other members of this clade are