Based on 2,837 research-grade iNaturalist observations in Arizona, Ceraunus Blue is most often recorded in August; in Arizona it behaves like a summer visitor / breeder. It ranks #9 among butterflies recorded in the state in our data.
Hemiargus ceraunus
Ceraunus Blue in Arizona by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Arizona in August
Queen
Pipevine Swallowtail
American Snout
Bordered Patch
Painted Lady
Sleepy Orange
Arizona Sister
Marine Blue
Places to look in Arizona
Botanical GardenDesert Botanical Garden
National ForestCoronado National Forest
State ParkBoyce Thompson Arboretum
National ForestTonto National Forest
State ParkYuma Territorial Prison
National ForestApache–Sitgreaves National Forests
FAQ
When does Ceraunus Blue appear in Arizona?
Mainly July–October, with the most records in August.
How common is Ceraunus Blue in Arizona?
It ranks #9 by number of iNaturalist observations among butterflies in Arizona (2,837 records in our sample).