Burnsius albsecens vs Burnsius communis

Nature Talk
1

Many sources say , Burnsius albsecens and Burnsius communis are indistinguishable in the field, only by dissection under a microscope.

Does anyone know of a way to distinguish them where there ranges intersect, or is " Common “Checkered-Skipper and Allies (Complex Burnsius communis)” the best id one can expect.

2

If there’s no hybrid swarm, they can obviously tell each other apart. Based on my observations of two similar species of yellows, I wonder if they show different flight or courtship behaviors.