A small aquatic beetle or genus of wetland-dwelling insects related to water beetles.
From Greek 'helos' (marsh, swamp). The term appears in older entomological texts as a name for various small aquatic or semi-aquatic beetles found in marshy areas.
Tiny heloe beetles have been overlooked in biology for centuries, yet they're crucial parts of wetland food webs—a single marsh teems with millions of these insects that feed on algae and decaying plants.
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