Conservation Status
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Common.
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Cyclicity
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Adults of this species have been collected from May to September.
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Distribution
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This species is found in Alaska and Wyoming, and northeastern Unites States, and most of Canada. In Alberta this species is found throughout the province.
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General Description
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Similar to fossifrons, differing in the following points: more slender, especially prothorax; tibiae usually darker, at least in outer half; prothorax with longer, almost parallel-sided constriction at base, anterior transverse impression, often entirely diappeared, impunctate; and elytral microsculpture clearly transverse. Elytral microsculpture transverse. Length 8.3-12 mm.
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Habitat
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Borders of standing and slow running water, on soil often peaty and dense vegetation present.
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Life Cycle
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Overwinters in the both larval (predominant) and adult stages.
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Trophic Strategy
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Both larvae and adults are predatory.
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Patrobus stygicus
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Patrobus stygicus: Brief Summary
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Patrobus stygicus is a species of ground beetle in the family Carabidae. It is found in North America.
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