San Jose scale

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A destructive scale insect (Quadraspidiotus perniciosus) that infests the bark, foliage, and fruit of fruit trees.

from the GNU version of the Collaborative International Dictionary of English.

• A very destructive scale insect (Aspidiotus perniciosus) that infests the apple, pear, and other fruit trees. So called because first introduced into the United States at San José, California.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small east Asian insect naturalized in the United States that damages fruit trees