In Québec, the genus Colymbetes (family Dytiscidae) counts 2 species of insects. The stars? Sculptured Predaceous Diving Beetle and Paykull's Predaceous Diving Beetle, the most often observed. The richest region: Bas-Saint-Laurent, with 2 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.