Intertidal-insects
Guides
Mesoveliidae
Water Treaders
Mesoveliidae is a family of semiaquatic true bugs comprising approximately 16 genera and at least 50 described species. Commonly known as water treaders, these predaceous insects occupy diverse habitats ranging from humid terrestrial environments to aquatic margins, including mangrove estuaries, freshwater surfaces, and even coastal caves and lava tubes. The family exhibits remarkable habitat plasticity, with some species adapted to intertidal marine conditions and others to fully terrestrial or cave-dwelling lifestyles. Molecular phylogenetic studies have challenged traditional subfamily classifications, suggesting polyphyly within Mesoveliinae.