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Sorry this is all I got! - Phyciodes tharos

Sorry this is all I got! - Phyciodes tharos
Carbondale, Jackson County, Illinois, USA
September 10, 2018
Chlosyne gorgone? Or Phyciodes tharos? Or P. campestris?
I wish I'd been able to get the underside of the wings, but that didn't happen...

Pearl Crescent female
Moved from ID Request.

How does one distinguish
Phyciodes tharos from, for example, Chlosyne gorgone??
I know I'm a wee east of C. gorgone's range, but they look indistinguishable from above to me...
Thank you!

A few differences in visible dorsal view
P. tharos as well as some other Crescents have the outer spot either hollow or broken at the trailing edge of the forewing. C. gorgone as well as other Checkerspots have an intact spot. C. gorgone has several arrow shaped spots on both wings and usually one or two white / silvered centers of the hindwing submarginal spot band. Other differences exist but these are a few basic characteristics.

Thank you!
Thanks for taking the time to respond, Cliff. I really appreciate that!

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