SAWFLY
sawfly
(noun) insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant
Source: WordNet® 3.1
Etymology
Noun
sawfly (plural sawflies)
Any of various flying insects of the suborder Symphyta whose ovipositor is long and often serrated and is used to cut into plants to lay eggs.
Source: Wiktionary
Saw"fly`, n. (Zoöl.)
Definition: Any one of numerous species of hymenopterous insects belonging
to the family Tenthredinidæ. 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 larvæ
resemble those of Lepidoptera.
Source: Webster’s Unabridged Dictionary 1913 Edition