gamma moth

noun

Definition of gamma moth 

: a migratory European noctuid moth (Plusia gamma) having a bright silvery Y-shaped mark on each of the forewings and a larva that feeds on the cabbage and other vegetables

called also silver Y moth

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First Known Use of gamma moth

1799, in the meaning defined above

History and Etymology for gamma moth

New Latin gamma (specific epithet of Plusia gamma), from Late Latin, third letter of the Greek alphabet; from the likeness in shape of the marks on the forewings to small gammas

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The first known use of gamma moth was in 1799

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