Douglas-fir tussock moth wasp

• The Douglas-fir tussock moth
• defoliates Douglas firs, true firs,
• and spruce in western North America.
• The Douglas-fir tussock moth wasp
• defoliates the Douglas-fir tussock moth
• and its caterpillar by laying its eggs
• in either adult or its larva.
• The tiny wasps are particularly tuned
• to the sex pheromones of the adult moths.