White, woolly mass on Alder or Maple tree
The Woolly Aphid is found only on Alder and Maple trees and may be recognized by its downy appearance. Although it feeds on the tree, it is never common enough to do any damage. The wool is a secretion of wax protecting the insect.
Oyster-shell Scale (Lepidosaphes ulmi)
Tiny oyster-shell-shaped body covering Attached to bark of tree (particularly Poplar and Birch)
You must look very carefully to discover one of these insects. The young Scales have legs and move about during the month of June. Then they settle down, lose their legs, and secrete a wax shell over their bodies. These Scales are extremely common at the beach, but only the careful observer is likely to see them.
The Golden-eyed Insects
Common Lacewing (Chrysopa, several species)
Delicate-green insect Very large wings Golden-colored eyes