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King of the Walnut Tree~ Walnut Sphinx Moth (Amorpha juglandis) Caterpillar

With their lovely turquoise color, Walnut Sphinx cats have always been a favorite of mine...and I usually spend hours each summer/fall lifting up the countless leaves of short, young walnut trees in hopes of finding one! This one, though, was just above me on a massive old walnut tree yesterday...thank goodness I just happened to glance up and spot it! The first one I've ever found on a mature tree!

 

The Walnut Sphinx caterpillar is unique in that it can produce an audible high-pitched squeak by expelling air from pairs of spiracles in its abdomen when threatened by a predator! Quite a unique defense system! Several videos on Youtube attest to this amazing behavior!

 

Chaney found this mature Walnut Sphinx Moth below on one of our hikes last year...

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Uploaded on July 26, 2019
Taken on July 25, 2019