Living With Dainty Sulfurs

The Dainty Sulfur Butterfly, Nathalis iole, is the smallest of the sulfur butterflies. This beautiful yellow butterfly with distinctive black marings lives up to its “Dainty” moniker in appearance and behavior. The Dainty sulfurs are active and fliers and flit from plant to plant when nectaring.

Dainty Sulfur Butterfly

The Dainty Sulfur is a warm weather species that typically does not overwinter in the Northern US and must migrate every summer. Shull in his Butterflies of Indiana, notes that in some years, the Dainty Sulfur fails to migrate into Indiana. This year (2012) saw a milder than typical winter and an unusually warm summer. Dainty sulfurs have been common. Other warm weather butterflies such as the Fiery Skipper have been common this year. The warmer weather may have allowed populations to spend the winter further north than usual.

About jjneal

Jonathan Neal is a retired Associate Professor of Entomology at Purdue University and author of the textbook, Living With Insects (2010). This blog is a forum to communicate about the intersection of insects with people and policy. This is a personal blog. The opinions and materials posted here are those of the author and are in no way connected with those of my employer.
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