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gypsy moth populations become intolerably high.
Once established in an area, the gypsy moth never leaves.
True, although past records of gypsy moth activity indicate that there is usually a period of two or more years between outbreaks. Until such time as preferred tree species are removed or die, low level of gypsy moth populations will maintain the potential for recurrent outbreaks.
The gypsy moth is mainly a “people" pest.
Most complaints originate from people living or pursuing recreational activities in areas where gypsy moth defoliation is severe. The presence of larvae crawling everywhere and the rain of caterpillar droppings are common objections. Temporary loss of shade following defoliation and tree mortality are other concerns. Where people experience outbreaks of the gypsy moth, suppression measures, such as spraying, are usually undertaken.
Uninhabited woodlands will generally receive little insecticide treatment to reduce damage by the gypsy moth because costs are too great.
There are certain natural controls which moderate gypsy moth damage.
All insect populations have ups and downs. Weather conditions, parasites and predators, a virus disease
92.5%