A genus of beetles, particularly aquatic or semi-aquatic insects found in water-related habitats.
From Greek 'drys' (oak or tree-related) but the entomological usage may derive from habitat description, though the exact original reference is unclear.
Dryops beetles are so specialized for life in water that some species can only live in a few specific streams or springs—they're living fossils of incredibly narrow ecological niches that show how evolution can push species into stranger and stranger corners.
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