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Arizona Sister

Adelpha eulalia · Brush-footed Butterflies

Arizona Sister (Adelpha eulalia)
(c) Bill Bouton, some rights reserved (CC BY-NC-SA) · CC BY-NC-SA · via iNaturalist

Arizona Sister (Adelpha eulalia) is in the Brush-footed Butterflies family (Nymphalidae). Across the U.S., iNaturalist users have logged 4,377 research-grade observations of it in our sample, peaking in August.

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 Arizona Sister: observations by month (U.S.)

JanFebMarAprMayJunJulAugSepOctNovDec

About Arizona Sister

Adelpha eulalia, the Arizona sister, is a species of butterfly in the family Nymphalidae. It is occurs from at least Guatemala and Mexico to the southwestern United States, including southeastern California, Arizona, New Mexico, southern Texas. They can also sometimes be found in Oklahoma, Kansas, Colorado, Utah, and Nevada. Adelpha eulalia belongs to the serpa species group in the genus Adelpha (sisters). It was previously treated as a subspecies of Bredow's sister (Adelpha bredowii). Recent phylogenetic...From Wikipedia via iNaturalist — article, CC BY-SA.

Arizona Sister by state

StateObservationsPeak monthMain season
Arizona2,530AugustMay–Oct
New Mexico626AugustMay–Sep
Texas598AugustApr–Nov
Utah423SeptemberAug–Oct
Nevada174SeptemberAug–Oct
Colorado24SeptemberAug–Sep

Main season = months with at least 30% of the state's peak-month count.

Related butterflies (Brush-footed 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 Arizona Sister?
Nationally, August has the most observations, with the main season from May to October.
Where is Arizona Sister most often seen?
The most observations come from Arizona, New Mexico, Texas.