Common Name: Whirligig Beetle, Waltzing Beetle or Scuttle Bug
Length: 3.4 - 7.5 mm
Streams, rivers, ponds and lakes.
Time of year seen: Summer
Diet: Scavengers of dead and dying insects
Other: Worldwide there are 700 species of
Whirligig Beetles, of these 56 species are recognized in Canada and the
mainland United States. Adult Whirligig Beetles are found in groups on
the surface of various water bodies whirling and gliding about. The
Whirligig Beetle has two pairs of compound eyes on its head, one above for
vision in air and the second below for vision in water. The adult
beetles can also dive below the surface if threatened or searching for food.
As an additional deterrent to predators adult beetles can secrete a smelly
liquid. They fly well which allows them to move from one body of water
to another with minimal difficulty. (White, 1983 and Arnett et al, 2001)