Definitions for: Cankerworm


[n] green caterpillar of a geometrid moth; pest of various fruit and shade trees



Webster (1913) Definition: Can"ker*worm`, n. (Zo["o]l.)
The larva of two species of geometrid moths which are very
injurious to fruit and shade trees by eating, and often
entirely destroying, the foliage. Other similar larv[ae] are
also called cankerworms.

Note: The autumnal species (Anisopteryx pometaria) becomes
adult late in autumn (after frosts) and in winter. The
spring species (A. vernata) remains in the ground
through the winter, and matures in early spring. Both
have winged males and wingless females. The larv[ae]
are similar in appearance and habits, and belong to the
family of measuring worms or spanworms. These larv[ae]
hatch from the eggs when the leaves begin to expand in
spring.

See Also: caterpillar, fall cankerworm, family Geometridae, Geometridae, spring cankerworm

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