Bruce spanworm

\ ˈbrüs- \
variants: or less commonly Bruce's spanworm \ ˈbrüsə̇z-​ \

Definition of Bruce spanworm

: a spanworm (Operophtera bruceata) that feeds in early spring on the foliage of deciduous trees in the northeastern U.S. and southern Canada

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History and Etymology for Bruce spanworm

probably after William S. Bruce †1921 British explorer and naturalist

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Cite this Entry

“Bruce spanworm.” Dictionary, Merriam-Webster, Accessed 14 Aug. 2020.

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