Conservation Status
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Not apparently threatened.
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Cyclicity
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May to August. Most Frequently collected July to August.
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Distribution
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New Brunswick to Alaska. Alaska south to West Virginia.
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General Description
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Elongate and moderately convex (Fall 1922). Dorsum of abdominal segments 4-7 medially black, abruptly changing to orange laterally (Oygur and Wolfe 1991). Hardened fore wing (elytra) with 11th row (most lateral) of elytral punctures (stria) close to margin in apical half (posterior of body). Elytra shiny, lacking evident microreticulation. Apical margin of male genitalia (aedeagus) sinuate, basally flattened. Male length 5.0-5.9 mm and width 2.8-3.1 mm. Female length 6.0-6.5 mm and width 3.1-3.4 mm (Oygur and Wolfe 1991).
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Habitat
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More likely to be collected from surface lentic waters. Also found on surface lotic waters.
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Life Cycle
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Has been collected in schools of mixed species also containing G. minuts, G. pectoralis, and G. picipes (Fall 1922).
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Gyrinus maculiventris
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Gyrinus maculiventris: Brief Summary
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Gyrinus maculiventris is a species of whirligig beetle in the family Gyrinidae. It is found in North America.
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