Bird Poop Bug (larval Lace Bug)

Found on the undersides of leaves of various trees and shrubs including sycamore, oak, and willow.

Nymphs and adults feed on plant sap by piercing the leaf epidermis with their mouthparts.

The nymphs of some species cover themselves with their own waste (frass) to camouflage themselves as bird droppings to avoid predators.

Generally harmless to humans; however, large infestations can cause stippling damage to leaves and early leaf drop in plants.