Due to strong winds and periods of overcast, no field trip was conducted, which turned out to not have been needed anyway, as some butterflies were seeking shelter from the winds in our yard throughout the day.
Both were discovered by sheer accident. O. sylvanus was discovered when my mother took the trash cans back to the yard, whereas P. edusa wanted to spend the night at our place but got scared away when I was checking our mailbox at around 8:30 PM where, once again, a yet-to-be-identified spider resides.
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Note (25 June): Yeah, misidentified M. galathea as P. edusa. It was a long day.