Gyrinus cavatus
Atton, 1990
Gyrinus cavatus is a of whirligig beetle in the Gyrinidae, described by Atton in 1990. It is found in North America, with records from Canada including Alberta, British Columbia, and Labrador. As a member of the Gyrinus, it is a small, surface-dwelling aquatic that forms on still or slow-moving water.
Pronunciation
How to pronounce Gyrinus cavatus: //dʒɪˈraɪnəs kəˈveɪtəs//
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Habitat
Found in freshwater aquatic environments including rivers and streams with clear, cold water over gravel bottoms. As a whirligig beetle, it inhabits the water surface film of sheltered pools and lazy waters.
Distribution
North America. Recorded from Canada: Alberta, British Columbia, and Labrador.
Behavior
Forms surface or 'rafts' on water, a characteristic of whirligig beetles. These aggregations provide enhanced detection through multiple scanning for threats.
More Details
Taxonomic note
Described by Atton in 1990, distinguishing it from other Gyrinus based on morphological characteristics. The specific epithet 'cavatus' refers to a hollowed or excavated feature, likely of diagnostic significance.