|scientific name Nacophora quernaria |
common name Oak Beauty
The single Alberta record is for mid July.
A robust, mainly black and creamy-white moth. Similar to Biston betularia, but the median area of N. quernaria is darker, not concolorous with the outer third of the wing. N. quernaria also has diffuse light tan patches along the wing margin, lacking in betularia.
The caterpillar is rather short and stout for a geometrid, and varies in colour from grey to brown or greenish (Wagner et al. 2001). Pupae hibernate. Adults are nocturnal and come to light.
In Alberta known only from the Wainwright sand dunes complex. Widespread in the East.
Larvae feed on a variety of hardwood trees. Reported hosts which occur in Alberta include white birch (Betula papyrifera), willow (Salix spp.), poplars (Populus spp.) and cherry (Prunus spp.).
An eastern species, recently found as far west as east-central Alberta.
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