Notes on Acrobasis rubrifasciella Pack. (Lepidoptera: Phycitidae), with a List of its Parasites

Abstract

In the Ottawa region about the middle of June, frequently certain leaves of the common alder, Alnus rugosa var. americana (Regel) Fern., are drawn together by strands of silk, concealing an elongate silken tube or case. The latter is occupied by an active brownish-grey larva that, when unmolested, extends itself from the broadly open end of the rube to feed on the foliage. This insect is the phycitid Acrobasis rubrifasciella Pack., a species that occors in northeastern United States and adjacent parts of Canada.