Project Noah

Project Noah is a tool to explore and document wildlife and a platform to harness the power of citizen scientists everywhere.

Join Project Noah Today

Common Buckeye Caterpillar

Junonia coenia


The caterpillars are colored black and have orange spots. Along their lengths, they have spines that branch out and appear blue at the roots. These caterpillars can be up to 1.5 inches in length.


Spotted in an overgrown meadow.


Caterpillars of these butterflies appear to prefer plants that produce iridoid glycosides, which are bitter compounds that release a hormone called gastrin that activates the digestive system (i.e. hunger); therefore, iridoid glycoside producing plants stimulate and attract their appetites particularly when found in plants like Plantago lanceolata. In fact, the presence of these metabolites may trigger oviposition behaviors in female butterflies so that descendant larval bodies may better incorporate iridoid glycosides.(Wikipedia)

No species ID suggestions

Arkansas, USA

Lat: 35.13, Long: -92.66

Spotted on Sep 11, 2018
Submitted on Sep 18, 2018

Related spottings

The chocolate pansy The Chocolate Pansy Junonia almana 美眼蛺蝶 Junonia

Nearby spottings

Monarch butterfly Common buckeye Leaf-Footed Bug (male) Tree