Beetles in Wisconsin

Wisconsin has various beetles inhabiting the state, with most of them ill-reputed for infestation and damage to plants, food grains, or household objects. The bigger beetles like the Japanese beetle and green june beetle mainly feed on plants like rose, grapes, and sweet potatoes. The smaller species, on the other hand, like the carpet and khapra beetles, thrive indoors, destroying carpets, clothes, and food products.

Beetle in Wisconsin (WI)

Largest Beetles: Green June Beetle, Japanese Beetle, Black Blister Beetle

Smallest Beetles: Black Carpet Beetle, Khapra Beetle, Varied Carpet Beetle

Most Common Beetles: Japanese Beetle, Varied Carpet Beetle

Here is the list of beetles found in Wisconsin arranged in order of the family they belong to.

Ladybird Beetles

Soldier Beetles

Leaf Beetles

Scarab Beetles

  • Japanese Beetle (Popillia japonica)
  • Rose Chafer Beetle (Macrodactylus subspinosus)
  • Green June Beetle (Cotinis nitida)

True Weevils

  • Boll Weevil Beetle  (Anthonomus grandis)
  • Plum Curculio Weevil Beetle (Conotrachelus nenuphar)
  • Vine Weevil Beetle (Otiorhynchus sulcatus)
  • Strawberry Root Weevil Beetle (Otiorhynchus ovatus)
  • Strawberry Bud Weevil (Anthonomus signatus)
  • Green Immigrant Leaf Weevil Beetle (Polydrusus formosus)

Blister Beetles

  • Black Blister Beetle (Epicauta Pennsylvania)

Longhorn Beetles

  • Asian Long-horned Beetle (Anoplophora glabripennis)
  • Red Milkweed Beetle (Tetraopes tetrophthalmus)
  • Elderberry Borer Beetle (Desmocerus palliates)

Jewel Beetles

  • Bronze Birch Borer Beetle (Agrilus anxius)
  • Two-lined Chestnut Borer Beetle (Agrilus bilineatus)
  • Emerald Ash Borer Beetle (Agrilus planipennis)

Leaf Beetles

  • Scarlet Lily Beetle (Lilioceris lilii)

Stag Beetles

  • Lucanus placidus

Ptinidae Beetles

  • Deathwatch Beetle (Xestobium rufovillosum)

Skin Beetles

  • Black Carpet Beetle (Attagenus unicolor)
  • Khapra Beetle (Trogoderma granarium)