noun (plural stoneflies)
A slender insect with transparent membranous wings, the larvae of which live in clean running water. The adults are used as bait by fly fishermen.
- Order Plecoptera: many families
More example sentences
- Young Atlantic salmon in streams eat mainly the larvae of aquatic insects such as blackflies, stoneflies, caddisflies, and chironomids.
- The Permian saw the appearance of stoneflies, true bugs, beetles, and caddisflies, among other groups.
- Their findings can then be presented to government scientists for further investigation, or passed to national recording schemes for the three main groups of river insects: caddisflies, mayflies, and stoneflies.
Definition of stonefly in:
- The US English dictionary