Small Apollo

Parnassius corybas

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Parnassius phoebus

Male, Switzerland, July 2017

Small Apollo - Parnassius phoebus

Switzerland, July 2006

Small Apollo - Parnassius phoebus

Male, Switzerland, July 2006

Small Apollo - Parnassius phoebus

The same male, just barely showing the red in the costal marks of the forewing

Small Apollo - Parnassius phoebus

Female, showing prominent red

Small Apollo - Parnassius phoebus

The same female

Small Apollo - Parnassius phoebus

Close-up of a butterfly held by Matt Rowlings, showing the black and white antennae

This butterfly has long been known as Parnassius phoebus but it has recently been established that this name was based entirely upon a misdeintification of an already named butterfly, Parnassius ariadne. It is still a live issue whether our Swiss populations should be called corybas or sacerdos but I choose here corybas as that is what Leraut chose in his most recent book. The butterfly itself is not difficult to identify. The male is strikingly white compared to a male Apollo and has a small amount of red in the postdiscal costal markings. The female has a substantial amount of red there. It is more local than the Apollo but widely distributed in the Alps.