AN ATTRACTANT-BAITED STICKY TRAP FOR MONITORING THE SPOTTED TENTIFORM LEAFMINER, PHYLLONORYCTER BLANCARDELLA (LEPIDOPTERA: GRACILLARIIDAE)

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Abstract
The spotted tentiform leafminer, Phyllonorycter blancardella (Fabr.), is an important pest of apple in Michigan (Dutcher and Howitt 1978), New York (Weires et al. 1980), and Ontario (Pree et al. 1980). In Ontario, the leafminer has three generations per year (Johnson et al. 1976) and overwinters as a diapausing pupa in the leaf litter (Johnson et al. 1976; Trimble 1983a). The spring activity period usually begins during late April or early May (Trimble 1983b) and the two summer activity periods usually begin during mid-June and mid-August (Johnson et al. 1976; Trimble, unpublished).