In Québec, the genus Cercyon (family Hydrophilidae) counts 4 species of insects. The stars? Water scavenger beetle, Single-spotted water scavenger beetle and Spot-headed Water Scavenger Beetle, the most often observed. The richest region: Capitale-Nationale, with 3 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.