The canker worms are the inch worms that hump up as they crawl.
Eggs hatch in the spring and the larvae suspend themselves from silk strands. This allows them to be blown to other trees. The larvae eat leaves down to the midrib and feed for up to five weeks. After feeding they go into the soil to pupate. The female moths have no wings so must climb up the trunks of trees in order to lay eggs. Depending on the type of canker worm eggs can be laid in either spring or fall. The eggs are laid closely together in rows on small twigs.
Controls include Bacillus thuringiensis, methoxychlor or Orthene.
|Visual title - Visual size||Visual title - Visual size|
|Cankerworm - 29K||Cankerworm eggs on a twig - 27K|
|Fall cankerworm - 16K|