What is a pest that leaves black eggs and munches on geranium leaves?

Spider mites or tobacco budworm may be the pest that appears to leave black eggs and munch on geranium leaves.

Specifically, the tobacco budworm moth (Helicoverpa virescens ) deposits eggs that gray from an original white or yellow-white with age. Spider mites (Tetranychidae family) look like black, minuscule, moving specks of dirt. Budworm eggs mature into larvae that relish geranium buds and shoots. They share their love for geranium foliage with spider mites.