June Beetle | Description, Life Cycle, & Facts - Britannica

Home » What Do June Bugs Eat » June Beetle | Description, Life Cycle, & Facts - Britannica

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June bug, (genus Phyllophaga), genus of nearly 300 species of plant-eating beetles that commonly appear in the Northern Hemisphere during warm spring evenings and are attracted to lights.

Taxonomy
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Coleoptera
  • Family: Scarabaeidae
  • Subfamily Melolonthinae

See also list of beetles.

The heavy-bodied June bugs vary from 12 to 25 mm (0.5 to 1 inch) and have shiny wing covers (elytra). They feed on foliage and flowers at night, sometimes causing considerable damage. June bug larvae, called white grubs, are about 25 mm (1 inch) long and live in the soil. They can destroy crops (e.g., corn [maize], small grains, potatoes, and strawberries), and they can kill lawns and pastures by severing grasses from their roots.

Each female buries between 50 and 200 small pearl-like eggs in the soil. After three years of feeding on plant roots, the larvae pupate, emerge as adults in late summer, and then bury themselves again for the winter. In the spring the adults emerge once more and feed on available foliage. Adults live less than one year.

Mute swan with cygnet. (birds) Britannica Quiz Match the Baby Animal to Its Mama Quiz

A natural enemy of the June beetle is the waved light fly (Pyrgota undata). The female fly lays an egg under the beetle’s elytra, where it hatches and feeds on the beetle, eventually killing it. Some small mammals, such as moles, are known to feed on the grubs, and June beetle larvae are considered excellent fish bait.

Also called: May beetle or June beetle (Show more) Related Topics: common garden insects and their larvae chafer white grub (Show more) See all related content

(For information on the related green June beetle [Cotinus nitida] or the ten-lined June beetle [Polyphylla decemlineata], see flower chafer.)

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