|scientific name Drasteria perplexa |
common name Perplexing Arches
Dry, short-grass prairie.
Adults are on the wing from late May into June.
Forewing brown-grey with a paler postmedian patch; AM bad not discernible, with the basal half of the forewing concolourous. Marginal area paler brown-grey. Hindwing orange with a black margin and postmedian band, black discal crescent reduced and generally not connected to PM band.
The even, unmarked basal half of the forewing and ochre-orange hindwing distinguish the Perplexed Arches from other species in the province.
Comes to light, and not known to be day-active. This species has a local occurrence in Alberta, and is known only from the southern prairie region.
Limited distribution in Canada.
Alberta south to AZ (Richards 1939). Hooper (1990) states there is a specimen from Estuary, SK in the CNC but I was unable to locate this specimen; nonetheless, perplexa should occur in SK. Known as far north as the Red Deer River badlands east of Trochu, AB.
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