Had this skipper (Zabulon?), an Eastern Tiger Swallowtail and some Cabbage Whites on Monday afternoon on the Kingsland Overlook. Yikes — time to get out the butterfly field guides again.
(Also saw a Rose-breasted Grosbeak and a hard-to-diagnose flycatcher.)
For the NABA checklist for DeKorte Park (with frequency and season), click here. Whichever butterfly is pictured above does not appear to be on the list, unless we overlooked something (always a possibility).