Conservation Status
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A widespread species, no concerns.
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Cyclicity
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Adults are on the wing July to mid-August.
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Distribution
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Across southern Canada, from Nova Scotia west to Vancouver Island; south to Texas and Georgia. In Alberta, it apparently occurs throughout much of the Boreal Forest region, north to Zama Lake, south in the riparian cottonwood groves along the Red Deer River at Dinosaur Provincial Park.
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General Description
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A small (1.5-1.9 cm wingspan) broad-winged light yellow or pale tan moth, with the median line forming a wide, elliptical brown patch near the costa, covering two small purple reniform dots. The fine, dark brown antemedian and postmedian lines swing out toward the apex in parallel. The terminal area and fringe shade to dark brown, and there are scattered dark scales over the remainder of the forewings. The hindwings are only slightly paler than the forewing ground, darker shaded toward the margin, and with a faint median line. The antennae are simple and both of the sexes are similar. It is not likely to be mistaken for any other moth.
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Habitat
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Clearings, meadows, edges and lush grassy areas.
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Life Cycle
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Adults are nocturnal and come to light and to sugar baits.
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Trophic Strategy
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No Alberta data; elsewhere reported as either unknown, or as using grasses (Covell, 1982).
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Rivula propinqualis
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Rivula propinqualis: Brief Summary
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Rivula propinqualis, the spotted grass moth or yellow snout-moth, is a moth of the family Erebidae. The species was first described by Achille Guenée in 1854. It is found throughout eastern North America from southern Canada southward to Florida and Texas and westward in the north to British Columbia and Washington. In North Carolina it is found from the Appalachian Mountains to the Atlantic coast.
The wingspan is 15–19 mm. Adults are on wing from May to August.
The larvae feed on various grasses.
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