Echo Azure (Celastrina echo) is in the Gossamer-winged Butterflies family (Lycaenidae). Across the U.S., iNaturalist users have logged 14,175 research-grade observations of it in our sample, peaking in June.
Seasonal pattern in the national data: summer visitor / breeder. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
When to photograph Echo Azure: observations by month (U.S.)
About Echo Azure
Celastrina echo, known generally as the echo azure or western azure, is a species of blue in the family of butterflies known as Lycaenidae. It is found in North America.From Wikipedia via iNaturalist — article, CC BY-SA.
Echo Azure by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 7,239 | June | Mar–Jun |
| Arizona | 2,403 | July | Feb–Sep |
| Washington | 1,697 | April | Apr–Jul |
| Oregon | 1,593 | April | Apr–Jul |
| Idaho | 303 | May | Apr–May |
| Nevada | 230 | June | May–Jul |
| New Mexico | 199 | May | Apr–Sep |
| Utah | 147 | May | Apr–Jul |
| Colorado | 115 | May | May–Jun |
| Montana | 113 | May | Apr–May |
| Texas | 76 | May | May–Aug |
| Wyoming | 58 | June | May–Jun |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Gossamer-winged Butterflies)
Gray Hairstreak
Eastern Tailed-Blue
Red-banded Hairstreak
Marine Blue
Ceraunus Blue
Summer Azure
Western Pygmy-Blue
Reakirt's Blue
Photography tips
- Butterflies are sluggish on cool mornings — the best time for close approaches.
- Keep the sensor parallel to the wings for edge-to-edge sharpness.
- Nectar plants in bloom are reliable places to wait.
FAQ
When is the best time to photograph Echo Azure?
Nationally, June has the most observations, with the main season from March to July.
Where is Echo Azure most often seen?
The most observations come from California, Arizona, Washington.