|scientific name Oeneis macounii |
common name Macoun's Arctic
Dry, open pine woods.
One flight per year or every other year, peaking in early June to early July.
Our largest species of arctic. Upperside bright rust-brown with a dark brown border, and usually two forewing eyespots. The underside has a striated brown-black and white appearance, with a loose and poorly defined median band.
In Alberta, only O. chryxus chryxus is similar, but male chryxus have a dark forewing discal patch and are slightly smaller. Female chryxus have at least three rather than two equal-sized forewing eyespots. There are no described subspecies.
Macoun's Arctic requires two years to complete its life cycle, and flies only in alternate years in most localities. Boreal populations fly mostly in odd-numbered years (Hooper 1973, Bird et al. 1995). Mountain populations are not entirely synchronous with boreal ones, since they fly in both odd- and even-numbered years.
Adults have a characteristic leisurely, hopping flight, and males perch on tree branches at the edge of clearings to await passing females.
Not of concern.
The larval hosts are not known, altough larva eat grasses and sedges in captivity (Scott 1986).
Almost entirely restricted to Canada, only reaching the US in MN and MI (Layberry et al. 1998). Occurs in central BC and southwestern NWT east to southern Quebec.
Nicolas Deguines (2010-10-13)
I am wondering if Oeneis macounii has ever been named Chionobis macouni? In
Clements F.E. & Long F.L. (1923) Experimental pollination - an outline of the ecology of flowers and insects,
there is a Chionobis macouni that does not match any species name in databases such as GBIF, NCBI or ITIS. But it should be an insect and I thought it might be Oeneis macouni as all the other species named macouni are not at al insects.
Anyone has informations that could help me?
PhD student at the National Museum of natural history (Paris, France)
Felix Sperling (2010-11-29)
Yes, it is an old synonym of Oeneis.
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