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Integrated Pest Management · Agriculture and Natural Resources

University of California


Beetles have hardened outer wings, giving adults a sturdy, armored appearance. Beetles feed by chewing, so damage includes holes, notches, tunnels, and chewed plant parts. The group includes leaf beetles, woodboring beetles, grubs, wireworms, and weevils. A few beetles are common pantry pests.

Link to beetles that feed on flowers, fruits, and buds

Fruit, flower, and bud beetles

Many beetles feed on fruit or flowers during their adult or larval stages.

Link to indoor beetle pests

Indoor beetle pests

Carpet beetles, wood borers, and pantry pests are among the most common beetles found inside homes

Link to leaf, stem, and seedling beetles

Leaf, stem, and seedling beetles

Many beetles chew holes in leaves and stems as adults.  For some species, the larvae are also leaf feeders.

link to root-feeding beetles

Root beetles

Many beetles, including grubs and most weevils, are root feeders in their larval stages.

Link to tree-boring beetles

Tree-boring beetles

These beetles bore into tree branches, twigs and trunks. Adults lay eggs on or in the wood, and larvae feed within it, often making distinctive tunnels or galleries.

related or similar species

  • For beneficial species such as lady beetles, ground beetles, and soldier beetles, see the Natural Enemies gallery.