stonefly(redirected from Stoneflies)
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Any of numerous insects of the order Plecoptera, having two pairs of membranous wings and long antennae, the nymphs of which often live under stones in streams. Adult and larval stoneflies are used as fishing bait. Also called plecopteran.
n, pl -flies
(Animals) any insect of the order Plecoptera, in which the larvae are aquatic, living beneath stones, and the adults have long antennae and two pairs of large wings and occur near water
[C15: so called because its larvae live under stones in rivers]
n., pl. -flies.
any of numerous dull-colored primitive aquatic insects of the order Plecoptera, having a distinctive flattened body shape: a major food source for game fish.