Protect Your Garden with Beneficial Bugs
(Page 6 of 6)
August/September 2004
By Barbara Pleasant
Parasitic flies include more than 1,300 species of tachinid fly (Diptera), which look like hairy houseflies. They lay their eggs on a number of caterpillars, including corn earworms, cabbageworms, cutworms and many other garden pests. Closely related humpback flies parasitize ants, bees, beetles and scale insects.
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Aphid mummies are the bodies of aphids that have been killed by parasites such as mini wasps. The hole was made when an adult mini wasp emerged from the aphid. You can tell if beneficial mini wasps are present by looking closely for the mummies in aphid colonies. To allow the mini wasps to thrive, avoid spraying pesticides and plant flowers listed in the chart below.
Spiders (Arachnida) have eight legs rather than six, and they probably are the most abundant predators in home landscapes. The 3,000 species found in North America include web spiders, jumping spiders, crab spiders and many others. Spiders are general feeders that help keep many other insects in check.
Adapted from “Natural Enemies are Your Allies” by the University of California.Adapted from “Natural Enemies are Your Allies” by the University of California.
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