A female Polyphemus moth usually lays small, pale-to-light-brown eggs on leaves, twigs, or nearby surfaces, and they can look a bit like tiny flattened disks or “mini brown cookies.” The eggs are often placed in clusters or scattered around the host plant, and they may have a darker brown attachment spot where they were glued in place.

What it looks like

  • Tiny, round-to-slightly oval eggs.
  • Light brown at first, sometimes with a darker ring or patch.
  • Often laid on the host plant or nearby surfaces, depending on the setting.

Helpful detail

When the eggs are fertile and developing, they can darken a bit before hatching. In breeding notes, people also describe them as neatly attached and easy to spot once you know to look for the small brown color and flat shape.

Simple visual cue

If you see a line or cluster of tiny, tan-brown dots on a leaf or wall near a Polyphemus moth, that’s often what egg-laying looks like in practice.