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Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Hemiargus ceraunus - Ceraunus Blue - Hodges#4359

Ceraunus Blue - Hemiargus ceraunus - female Which Blue? - Hemiargus ceraunus - female Butterfly - Hemiargus ceraunus Ceraunus Blue - Hemiargus ceraunus Ceraunus Blue - Hemiargus ceraunus Hemiargus ceraunus? - Hemiargus ceraunus - female Little butterfly  - Hemiargus ceraunus Cassius Blue? - Hemiargus ceraunus
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Papilionoidea (Butterflies and Skippers)
Family Lycaenidae (Blues, Coppers, Hairstreaks, Harvesters)
Subfamily Polyommatinae (Blues)
Genus Hemiargus
Species ceraunus (Ceraunus Blue - Hodges#4359)
Hodges Number
Wingspan 20 - 30 mm
Two prominent black spots on leading edge of hindwing, below. One or more prominent large eyepots along the outer edge of hindwing (regional variations - southeastern ones seem to have one, southwestern ones, two).



Upperside blue (males) or brown with blue edge (females).


Southeastern and southwestern states. Year-round in FL and TX, ranging northwards in warmer months.
Larvae feed on woody legumes (pea family, Fabaceae).
Internet References
Butterflies and Moths of North America species description and map of confirmed county records.