Fatal Metalmark (Calephelis nemesis) is in the Metalmark Butterflies family (Riodinidae). Across the U.S., iNaturalist users have logged 6,044 research-grade observations of it in our sample, peaking in October.
Seasonal pattern in the national data: seasonal. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
When to photograph Fatal Metalmark: observations by month (U.S.)
About Fatal Metalmark
Calephelis nemesis (fatal metalmark or dusky metalmark) is a butterfly in the family Riodinidae. It is found in the southern part of the United States and Mexico.From Wikipedia via iNaturalist — article, CC BY-SA.
Fatal Metalmark by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Texas | 3,265 | October | Jul–Dec |
| Arizona | 1,757 | September | Apr–Nov |
| California | 990 | July | Jun–Oct |
| New Mexico | 32 | October | Aug–Oct |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Metalmark Butterflies)
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 Fatal Metalmark?
Nationally, October has the most observations, with the main season from June to November.
Where is Fatal Metalmark most often seen?
The most observations come from Texas, Arizona, California.