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Webster 1913 Edition
Sawfly
Saw′flyˊ
,Noun.
(Zool.)
Any one of numerous species of hymenopterous insects belonging to the family
Tenthredinidae
. The female usually has an ovipositor containing a pair of sawlike organs with which she makes incisions in the leaves or stems of plants in which to lay the eggs. The larvae resemble those of Lepidoptera.