The Southern Dogface gets its name from the silhouette of a dog's face visible in the black forewing border of males. It is one of the fastest and most powerful fliers among North American sulphurs. Adults migrate northward in summer, appearing seasonally well outside their year-round range in the Deep South.
Best time to see a Southern Dogface
The best time to see a Southern Dogface is September–December, when about 61% of U.S. sightings happen, based on 9,156 research-grade iNaturalist observations.
Not certain it is a Southern Dogface? What bug is this? walks through what to check first and the lookalikes that catch people out.
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