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Observation notes: Found perched upside down, high on a tree in a dry forest. Pacific side of country. FW band tapers at the upper end more than similar Two-spotted Prepona.
Verified by: Charlie Doggett
Verified date: June 28, 2022
Coordinator notes: Without seeing the folded wings, it is almost impossible to tell the difference in One-spotted and Two-spotted Prepona with the top sides being almost identical. But this is from an experienced and professional submitter whom I trust.