noun
- aquatic insects with two pairs of wings that develop in clean, well-oxygenated streams and rivers
Usage: entomology
Examples
- Stoneflies are important indicators of water quality in freshwater ecosystems.
- The larvae of stoneflies live under rocks in fast-flowing streams.
- Fly fishermen often use artificial stoneflies as bait to catch trout.
- Scientists study stoneflies to monitor the health of river systems.
- Adult stoneflies have a short lifespan and are most active near water.
- The presence of stoneflies suggests that the stream has low pollution levels.