Acleris maccana Treitschke 1835

Circumpolar. Europe east across the boreal regions to Siberia; in North America it occurs across much of the boreal forest region, south in the mountains in the east. In Alberta it has been collected from north of Lake Athabasca (Cornwall Lake) south to Waterton Lakes National Park.

A small (approx. 2 cm wingspan) grey-brown or red-brown moth with "squared" wings and the abrupt "shoulder" characteristic of Tortricids. The forewing markings are highly variable. Some specimens (above at right) are poorly marked with markings confined to a narrow oblique rusty red line crossing the forewing midway, and a less prominent erratic line crossing from the midpoint of the costa to the anal angle. Other specimens are grey (lower at right) with the outer half of the wing dark red-brown, frequently with a dark oblique band near the forewing base. Hindwings mottled light brownish grey. The male genitalia (lower right) are quite distinct.

Probably occurs in wooded areas throughout the province.

Poorly known. Acleris maccana is a solitary leaf roller that feeds on a variety of deciduous trees and shrubs including Myrica, Vaccinium, Rhododendron, Malus, Betula, Salix, Populus and others. The flight period is late fall (late Aug – early Oct.) and again in early spring (early Apr – mid May), probably hibernating. There is a single annual brood. Adults come to light.

Acleris maccana, the marbled dog's-tooth tortrix, is a moth of the family Tortricidae. The species was first described by Georg Friedrich Treitschke in 1835. It is found from Europe, east across the boreal regions to Siberia. In North America it occurs across much of the boreal forest region, south in the mountains in the east.

The wingspan is 19–25 mm. Adults are on wing in late fall and again in early spring. There is one generation per year.

The larvae feed on deciduous trees and shrubs, including Myrica (including Myrica gale), Vaccinium (including Vaccinium myrtillus and Vaccinium uliginosum), Rhododendron, Malus, Betula, Salix and Populus species. They live between leaves spun together with silk.