Cyclophora pendulinaria, the sweetfern geometer moth or pearly-grey wave, is a moth in the family Geometridae.
Overview It is found in North America,mothphotographersgroup where it is found from Newfoundland and Labrador west to the Yukon and coastal British Columbia, south to Georgia in the east. The habitat consists of moist or mesic forests.
The wingspan is 17–26 mm.BugGuide Adults have been recorded on wing from April to October.
The larvae feed on the leaves of Comptonia and Alnus species.
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