hemlock looper

American  

[hem-lok loo-per] / ˈhɛmˌlɒk ˌlu pər /

noun

1. an inchworm, the larva of the geometrid moth Lambdina fiscellaria, a serious pest of various trees, including hemlock, Douglas fir, balsam fir, white spruce, and oak.

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Etymology

Origin of hemlock looper

First recorded in 1910–15