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Scientific Name Blethisa quadricollis Habitat This species prefers acid bogs and occurs in Shagnum covered with Oxycoccus at the border of pools. Seasonality All of the Alberta records are from June. Identification The largest species in the genus, at once recognized by the rounded hind angles of the prothorax. Black, usually with bronzy, brassy or golden, along the margins often bluish or greenish, lustre. Length 15.5-17.8 mm. Life History Overwinters in the adult stage. Conservation Relatvely rare, due to local occurrences. Diet Info Both larvae and adults are predatory. Range This species ranges across the norther United States and most of Canada. In Alberta the only records are from the central region.