Nymph of European fruit lecanium scale, <i>Parthenolecanium corni</i>, blackened by the presence of a parasitic wasp, <i>Coccophagus lecanii</i>. An unparasitized nymph (right) is brown to orangish.
Nymph of European fruit lecanium scale, Parthenolecanium corni, blackened by the presence of a parasitic wasp, Coccophagus lecanii. An unparasitized nymph (right) is brown to orangish.
Credit: Jack Kelly Clark