Southern Dogface

Colias (Zerene) cesonia

The sulphurs can look very similar in their ventral aspects. So this one is not distinct except for its falcate forewing. It is only when you get a glimpse of its dorsal side that it appears to be more positively a Southern Dogface.

"The wings are sharply pointed, even slightly falcate, not rounded as are those of the other sulphurs."

This is the Dogface on the Butterflies of North America webpage.

Picture taken with a Nikon D90, using a Nikon 300mm, f/4.5 lens.

October 9, 2016.