Alberta, Canada
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Pearl Crescent
Phyciodes tharos
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General Description

By Nora Bryan

The small Pearl Crescent can be found in southern Alberta on dry prairie hillsides where it is on the wing in June. If you missed it, a second generation comes out in August. These diminutive beauties are abundant when in flight, but less common than the Northern Crescent.

The very small Pearl Crescent (wingspan 25 to 35 mm or 1 to 1 ? in.) is similar to the Northern Crescent. The upper wing surfaces are bright orange with black borders. The orange patches are well crossed by reticulate black markings, unlike the Northern Crescent, which has fewer reticulate markings and larger clear orange patches. The female is larger and has darker markings and is difficult to tell from a male Northern Crescent.. The hindwing underside has a dark patch on the rear margin with a silvery crescent.

The spiny brown caterpillars sport a yellow side stripe and munch asters.

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Where to find Pearl Crescents in Alberta   

There is currently no information regarding this species in our Where & When database.

Pearl Crescent Behaviour   

No observations regarding Pearl Crescent behavior have been submitted to the database yet.

Interesting Facts about Pearl Crescents   

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Pearl Crescent Stories from our Readers   

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Recent Pearl Crescent Reports in Alberta


No. Location Reporter Date
1 Edmonton E Mark 2010/08/06
4 Town of Brooks round 2010/05/16
3 Town of Brooks round 2009/09/02
1 Town of Brooks round 2009/08/27
1 Dinosaur PP Bailey 2008/08/23

Pearl Crescent Hotspots in Alberta

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