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Cassius Blue Leptotes cassius and Ceraunus Blue Hemiargus ceraunus

~ Butterflies that Resemble One Another ~
How to Tell the Difference!

Many butterfly species are similar in appearance. Differentiating between species can prove challenging!

Bill Berthet provided the solution to distinguishing the difference between these two species of butterflies.

One difference is that the Cassius Blue butterfly has two spots; like the name of the butterfly 'Cassius' has two ss in a row.


Cassius Blue butterfly different than Ceraunus Blue butterfly.
Cassius Blue butterfly
Two large spots on
the hindwing.
Ceraunus Blue butterfly different than Cassius Blue butterfly.
Ceraunus Blue butterfly
One large spot on
the hindwing.