7175. Large black beetle ~ 1.25-1.5″ tracking along the water’s edge — south shore of Wolfe Island (Lake Ontario) only one seen along the length of the beach 25 Mar 21 mid-afternoon. KINGSTON, ON. Canada
Number 7175. This is a predaceous diving beetle (Coleoptera: Dytiscidae); likely in the genus Dytiscus. They along with their larvae (’water tigers’) are voracious predators on other small aquatic life forms. They are strong fliers that often are found far from any water source.