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 more...>Crops>Blueberries>Blueberry Insect Pests>Leaves>

Blueberry Leaf Beetle


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There are several species of flea beetles that attack blueberries in the South. The one that is most common in the southeastern United States is blueberry leaf beetle, Colaspis pseudofavosa Riley. Larvae are dark brown, are 0.1-0.4 inch in length and have three pairs of legs. Pupae are yellow-orange in color and are generally found 0.5 inch deep in the soil. Adults are less than 0.25 inch in length, oval shaped and a shiny copper-bronze or metallic blue in color.

Facts:
  • Blueberry leaf beetle eggs, and possibly adults, overwinter in the leaf litter of blueberry fields.
  • Adults mate and lay up to 200 eggs per female.
  • Eggs are very small and orange in color.
  • Egg hatch coincides with leaf bud opening.
  • The larval stage takes 9-20 days to complete.
  • Fully grown larvae pupate in the soil under moist conditions.

Adults migrate to the foliage and feed on leaf margins, giving the leaves a notched appearance. The blueberry leaf beetle has several generations per year in the southern United States.

Damage:

  • The blueberry leaf beetle can cause serious damage during summer.
  • Adults can chew small holes in the foliage and prefer to feed on younger leaves.
  • Large numbers of leaf beetles may completely defoliate large areas in both crop and pruned fields, which can seriously affect next years growth

Control:

  • Burning may reduce blueberry leaf beetle populations.
  • There are selective pesticides, especially synthetic pyrethroids, which are effective in suppressing blueberry leaf beetle populations.
  • Contact your local Cooperative Extension Service office for control recommendations in your area.

Source:
Blueberry Leaf Beetles. 2011. University of Florida Institute of Food and Agricultural Sciences. Retrieved 30 August 2011.

Last Updated: 9/2/2011 4:00:20 PM

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