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Photo#1797002
Mystery egg case on clematis - Antheraea polyphemus

Mystery egg case on clematis - Antheraea polyphemus
Mount Prospect, Cook country County, Illinois, USA
April 7, 2020
Size: 1-2 inches long
Found on the eastern facing side of my home. Hard shell that does not deform when touched. Something rattles inside when moved slightly.

Moved

Looks like A. polyphemus
Antheraea polyphemus

Moved

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