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Facial features of a Speckled Wood butterfly

Observed: 2nd June 2012 By: grant burleighgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebrates
545b
545a
5492
Description:

The eyes here are at the front of the head rather than at the side and they appear to have a central lens (?) suggestive of stereoscopic vision. Among butterflies, is this a structure that is specific to the Speckled Wood, linked to the aerial aggression between males in this species? Also, I don’t see a tubular proboscis in these images. Does the Speckled Wood have a more sponge-like structure, geared to soaking up honeydew?

Identifications
Species interactions

No interactions present.

Species with which Speckled Wood Butterfly (Pararge aegeria) interacts