Lyside Sulphur (Kricogonia lyside) is in the Whites, Yellows, and Sulphurs family (Pieridae). Across the U.S., iNaturalist users have logged 5,951 research-grade observations of it in our sample, peaking in April.
Seasonal pattern in the national data: spring and fall migrant. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
When to photograph Lyside Sulphur: observations by month (U.S.)
About Lyside Sulphur
Kricogonia lyside, the lyside sulphur or guayacan sulphur, is a North American, Caribbean, and South American butterfly in the family Pieridae.From Wikipedia via iNaturalist — article, CC BY-SA.
Lyside Sulphur by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Texas | 5,621 | April | Apr–Jul |
| Arizona | 182 | July | Jul–Oct |
| Florida | 127 | July | Mar–Sep |
| New Mexico | 13 | June | Jun–Jul |
| Colorado | 6 | June | Jun–Aug |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Whites, Yellows, and Sulphurs)
Small White
Orange Sulphur
Cloudless Sulphur
Sleepy Orange
Checkered White
Dainty Sulphur
Little Yellow
Clouded Sulphur
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 Lyside Sulphur?
Nationally, April has the most observations, with the main season from April to July.
Where is Lyside Sulphur most often seen?
The most observations come from Texas, Arizona, Florida.