Rusty Tussock Moth Eggs
I was attempting to climb a fairly young sugar maple in order to reach an old nest at the very top, when I slipped and fell. Little did I know that my failure to reach the nest was going to present me with the opportunity to discover a mass of overwintering insect eggs, right at eye level on the tree trunk when I landed on the ground.
Last fall in a tree cranny a female caterpillar female rusty tussock moth (Orgyia antiqua) wove a cocoon in which she overwintered. After emerging as a wingless adult in the spring she mated with a male rusty tussock moth that had flown to her, and laid these eggs on her cocoon.