Alberta, Canada
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Acmon Blue
Icaricia acmon
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General Description

By Nora Bryan

The Acmon Blue is a butterfly of southern Alberta. Look for them in unforested areas on dry hillsides and meadows in June.

This gorgeous little Blue (wingspan 17 to 27 mm or ? to 1 ?in.) looks a bit like its more common cousins the Melissa or Northern Blue, but both sexes have an orange aurora on the upper side of the hindwing. They also lack an aurora on the underside of the forewing. The upper wing surfaces of the male are a pale violet blue while that of the female is brownish with a blue sheen. The greyish underwing is decorated with two rows of white rimmed black spots. The spots on the outer hind wing have metallic green centres and elongated orange spots.

The small greyish yellow or pink caterpillars are decorated with black specks, a green stripe on the back and pale oblique stripes on the sides. They eat all parts of plants in the Buckwheat Family as well as leguminous plants. They overwinter as half-grown larvae.

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Where to find Acmon Blues in Alberta   

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

Acmon Blue Behaviour   

No observations regarding Acmon Blue behavior have been submitted to the database yet.

Interesting Facts about Acmon Blues   

No interesting facts regarding Acmon Blues have been submitted to the database yet.

Acmon Blue Stories from our Readers   

No stories regarding Acmon Blues have been submitted to the database yet.

Recent Acmon Blue Reports in Alberta


No. Location Reporter Date
2 Fish Creek Pk Davis 2004/07/13
2 Douglas Glen Davis 2004/07/06

Acmon Blue Hotspots in Alberta

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