Whirligig Beetle
Gyrinus
This record describes Gyrinus (genus). Recorded family: Gyrinidae. Recorded order: Coleoptera.
Identification and Appearance
Whirligig Beetles are small oval water-beetles, steely grey/black or bronze in colour with paler legs, and very short antennae. The middle and hind legs are paddle-shaped and adapted for swimming, wheras the front legs are for grasping prey and food. They carry an air-bubble on the tip of the abdomen, and their eyes are divided in two to see both above and below water. They are gregarious, and the name comes from their behaviour of swimming rapidly in circles on the water surface, often in small groups. There are several species, which are hard to identify. If you haven't identifed the whirligig beetle to species from a specimen using standard keys, you should record it here as the genus No additional images available for this species.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Gyrinidae (Whirligig Beetles)
- Subfamily
- Gyrininae
- Genus
- Gyrinus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
ponds and still water bodies
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Gyrinus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
