n. 锯蜂

[ noun ]
insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant
<noun.animal>

Sawfly \Saw"fly`\, n. (Zo["o]l.)
Any one of numerous species of hymenopterous insects
belonging to the family {Tenthredinid[ae]}. 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 larv[ae] resemble those
of Lepidoptera.