Bug Scout 1979
Some Insects Beneficial
(Tom Turpin, Entomologist, Purdue University)
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That's what I call a beneficial species!
July 7, 1979

Many kinds of insects show up in crops each year.  Some are pests that can damage the crop.  Most do no harm and a few are beneficial.  These beneficial insects are often predators and parasites that destroy pests.

Insects that are beneficial include ladybird beetles and lacewings that feed on aphids.  Ground beetles, found in the soil, feed on corn rootworms and cutworms.  Several small wasps are known to parasitize armyworms, cutworms, the cereal leaf beetle, and other pest insects.

Most pesticides are more toxic to beneficial insects than to pest insects.  It's important to select control measures that minimize damage to beneficial insects whenever possible.  Remember, the good bugs are on your side!

(Photographs available upon request)

by Tom Turpin, Entomologist, Purdue University

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