Gyrinus gehringi
Chamberlain, 1929
whirligig beetle
Gyrinus gehringi is a of in the , described by Chamberlain in 1929. The species is known from North America, with records from Canada including New Brunswick, Newfoundland, and Nova Scotia. Whirligig beetles in this are small to -sized aquatic that live on the water surface, where they form conspicuous and exhibit rapid, erratic swimming .
Pronunciation
How to pronounce Gyrinus gehringi: //dʒɪˈraɪnəs ˈɡeɪrɪŋaɪ//
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Habitat
Aquatic; found on the surface of calm, clear waters such as streams, rivers, and pools. The occurs in freshwater with gravelled or rocky bottoms, typical of the clear, cold waters sustained by karst geology in regions like the Ozark Highlands.
Distribution
North America. Documented from Canada: New Brunswick, Newfoundland, and Nova Scotia.
Behavior
Forms or 'rafts' on the water surface. These aggregations serve multiple functions: increased vigilance against through multiple sets of scanning for threats, and possibly aposematic signaling to fish predators through chemical defenses produced in paired pygidial glands.
Similar Taxa
- Dineutus spp.Larger (~12 mm) with hidden and rounded elytral ; distinguished from Gyrinus by size and scutellum visibility.
- Other Gyrinus species-level identification within Gyrinus typically requires examination of coloration and other subtle morphological characters not visible in field observations.