About Graphium megarus (Westwood, 1841)
Male Graphium megarus has a black upperside patterned with white streaks and spots. On the forewing, the cell contains a small spot at its base, followed by three obliquely transverse streaks in the middle that do not extend to either the subcostal or median veins, plus two spots near the apex. There is one slender narrow streak each in interspaces 1a and 2, and two streaks in interspace 1. Above these markings, a basal spot followed by a streak appears in each of interspaces 3, 4, 6, and 8; only an outer spot is present in interspace 5, and a basal spot is present in interspace 7. A complete series of small subterminal spots is found at the end of the forewing. On the hindwing, there is a streak in the cell with a spot above the outer apex of the cell. A streak followed by a spot occurs in each of interspaces 1, 6, and 7. Interspaces 2 and 3 hold three elongate spots each, and interspaces 4 and 5 hold two elongate spots each. The hindwing ends with a series of four slender subterminal lunules across interspaces 2 to 5. The underside matches the upperside in pattern, but its markings are slightly broader. Females have a similar pattern to males, but their ground color is duller and a more sooty black. Their forewing markings are slightly broader than the male's, while their hindwing markings are slightly narrower than the male's. Karl Jordan included a description of this species in Seitz (on page 105), where he differentiates G. megarus from closely related taxa and discusses some of its forms.
