An abberant form of Common Bluebottle (Graphium sarpedon)

▲Graphium sarpedon (Vietnam)
　Left; Normal form Right; Abberant form(preserved in RIEB)

▲　Ditto, underside

An abberant form of Common Bluebottle (Graphium sarpedon)

   Common bluebottle (Graphium sarpedon) is known to have an abberant form which lacks almost all its bluish spots on its wings. This blackish form is very rare but found in many places from old days. Checking the wing patterns of this form carefully, one can find out the one bluish spot on its each forewing's apex usually remains although all the other bluish spots are missing. The reason is not certain but it is possible that this spot may have some special meaning.