description Cactus moth Overview
The cactus moth, Cactoblastis cactorum, is a South American moth in the family Pyralidae whose caterpillars feed inside prickly pear and other Opuntia cacti. It was introduced into Australia in the 1920s as a biological control agent against invasive prickly pear, where it contributed to the reduction of large cactus infestations. The species later became invasive in parts of the Caribbean and the southern United States.
help Cactus moth FAQ
What is the cactus moth's scientific name?
The cactus moth is Cactoblastis cactorum, a South American moth in the family Pyralidae. Its caterpillars feed inside prickly pear and other Opuntia cacti.
Why was the cactus moth introduced to Australia?
It was introduced into Australia in the 1920s as a biological control agent against invasive prickly pear. Its caterpillars damaged the cactus plants and helped reduce their spread.
What plants does the cactus moth attack?
The larvae mainly attack Opuntia and related prickly pear cacti. They feed within the pads, where their activity can weaken or kill parts of the plant.
Is the cactus moth useful or harmful?
Its effect depends on location. It helped control invasive prickly pear in Australia, but it is considered a serious threat where native Opuntia cacti are important, including parts of North America.
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