Distribution
provided by University of Alberta Museums
Obliqua has a widespread disribution, from Newfoundland to Vancouver Island, and from Churchill to southern Arizona.
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General Description
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A medium size moth (forewing length about 35 mm) with dark blackish brown or reddish brown forewings crossed by darker antemedian and postmedian lines. The hindwings are dark brown. It can be separated from the very similar A. vancouverensis by the elongate hollow basal dash and claviform streak filled with brown scales (black filled in vancouverensis). It is also similar to and difficult to separate from Agrotis volubilis. Males of volubilis have pale whitish hindwings while those of obliqua are dark. Many specimens of vancouverensis and obliqua are difficult to separate, and are frequently found misidentified in collections.
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Habitat
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In Alberta is most common in the wooded parts of the parklands and foothills, but also can be found throughout the boreal forest and in wooded valleys in the grasslands region.
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Life Cycle
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Although this is not an uncommon moth, the life history is poorly known, and the immature stages and host plants are unknown. There is a single annual brood with adults in the spring and early summer. Adults are nocturnal and come to light.
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Agrotis volubilis: Brief Summary
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Agrotis volubilis, the voluble dart moth, is a moth of the family Noctuidae. The species was first described by Leon F. Harvey in 1874. It is found in North America, from Newfoundland to British Columbia in Canada and in the United States from Maine to Florida and west to the West Coast.
The wingspan is 35–40 mm. Adults are on wing from May to July. There is one generation per year.
The larvae feed on a wide range of plants, including Medicago sativa, Phaseolus, Cerastium, Trifolium, Zea mays, Hordeum pusillum and Nicotiana.
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