Fruit flies are generally highly susceptible to parasitic wasps, but some have stolen a gene from bacteria that makes them resistant. This adult fly, Drosophila melanogaster, has two cysts (made dark ...
The Wasp Threat to Wiliwili Trees In Hawaii, a tiny wasp no bigger than a grain of sand has caused big problems for native trees. The erythrina gall wasp, scientifically known as Quadrastichus ...
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