|scientific name Oncocnemis sandaraca |
It occurs in dry open woodland in the mountains.
A medium size (approx. 3.2 cm wingspan) moth. Forwewings powdery; poorly defined antemedian and postmedian lines, median band more prominent. Terminal area suffused with dark scales. Hindwings orange-buff with a grey median line, grey scaling in the basal area and a wide black terminal band followed by white fringe. Antennae simple; sexes alike. Most similar to O. regina, which is smaller, has paler and less banded forewings and brighter yellow hingwings lacking the grey scaling in the basal half.
Almost nothing is known. Adults are nocturnal and come to light. Like other Oncocnemis, it is single brooded, with adults in late summer and fall. The Alberta specimens were collected from late August through late September. Nothing is known of the early stages or larval hostplants.
A western moth, found from the mountains of southwestern Alberta south to at least CO and CA.
Specimens from Hillcrest in the Bowman collection identified as O. regina have been corrected to O. sandaraca. Bowman (1951) listed O. regina from both the Banff and Hillcrest areas (Zone 18 and 19). We have not seen any specimens from Banff, but assume this record is also based on misidentified sandaraca. O. regina is a prairie badlands moth.
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