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Conservation Status

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Possibly dependent the cottonwood and tree willow stands along the southern river valleys.
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Cyclicity

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Adults have been captured between mid-August and mid-September.
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Distribution

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Nova Scotia south to Maryland and Kentucky, west to southern Saskatchewan and Alberta, western Montana and Utah. In western Canada, it appears to be restricted to the wooded parts of the prairies. In Alberta, it has been collected in the arid grasslands region, north to Dinosaur Provincial Park.
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General Description

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One of the largest underwing moths found in Alberta (7.0 -7.8 cm wingspan). The forewings are pale grey, mottled with darker grey and whitish patches. There are poorly defined but noticeable black streaks at the wing base, in the fold and in the sub-apical area. The area just inside the reniform spot is white, and the space immediately below the reniform forms a large, rather prominent squared white spot. A third pale area is located midway down the subterminal band. The hindwings are salmon or orange-pink, crossed by a rather narrow and cleanly defined black median band. There is a wide black terminal band bordered by a narrow and somewhat scalloped orange-white fringe. Adults are alike, and both sexes have simple antennae. The large size, patchy looking grey forwings and salmon-colored hindwings will help to identify parta.
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Habitat

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Riparian cottonwood forests and urban plantings in the grassland region.
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Life Cycle

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Adults are nocturnal and come to light, but they are best collected using sugar baits. The adults emerge in late summer and early fall, and the eggs overwinter. The larvae, which are solitary defoliators, hatch in May and can be found until early August. There is a single brood each year.
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Trophic Strategy

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No Alberta data. Elsewhere reported to use willows (Salix sp.), cottonwood and other poplars (Populus sp.).
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Catocala parta

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Catocala parta, the mother underwing, is a moth of the family Erebidae. The species was first described by Achille Guenée in 1852.[1] It is found in North America from Nova Scotia south to Maryland and Kentucky, west to southern Saskatchewan and Alberta, western Montana, and Utah. The wingspan is 70–78 mm. Adults are on wing from August to September depending on the location.

The larvae feed on Populus and Salix species.

References

  1. ^ Yu, Dicky Sick Ki. "Catocala parta Guenee 1852". Home of Ichneumonoidea. Taxapad. Archived from the original on March 15, 2016.

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Catocala parta: Brief Summary

provided by wikipedia EN

Catocala parta, the mother underwing, is a moth of the family Erebidae. The species was first described by Achille Guenée in 1852. It is found in North America from Nova Scotia south to Maryland and Kentucky, west to southern Saskatchewan and Alberta, western Montana, and Utah. The wingspan is 70–78 mm. Adults are on wing from August to September depending on the location.

The larvae feed on Populus and Salix species.

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