Conservation Status
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Relatvely rare, due to local occurrences.
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Cyclicity
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All of the Alberta records are from June.
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Distribution
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This species ranges across the norther United States and most of Canada. In Alberta the only records are from the central region.
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General Description
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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.
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Habitat
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This species prefers acid bogs and occurs in Shagnum covered with Oxycoccus at the border of pools.
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Life Cycle
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Overwinters in the adult stage.
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Trophic Strategy
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Both larvae and adults are predatory.
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