The caterpillar overwinters as an egg mass covered with black a varnish-like material. The caterpillars hatch early in March about 13—160 (59 peak) GDD50. Cornus mas may be in full bloom when the eggs ...

In their caterpillar stage, the bugs, known as web worms, weave leaves of trees together and eat them from their nests. ... they become distinctive white moths with five rows of black dots.

If you spent any time outdoors this spring, you probably noticed the abundance of caterpillars. Any place you'll find greenery—parks, trees, gardens—you're sure to find a caterpillar or two ...