So I've become a butterfly watcher, and when I'm quick and lucky - I snap a photo to help me figure out who they are. And yes, lately, I've been keeping a list of the "who, where and when" of what I've spotted on the Wisconsin Butterflies website (an "eBird" for butterfliers in the Badger state).
Milbert's Tortoiseshell (1.5 - 2")
caterpillar food: nettles
adults feed on sap, dung, rotting fruit and nectar
overwinters as a adult
Viceroy (2.5 - 3.36")
caterpillar food: cottonwood and willow
adults feed on dead animals, rotting fruit and nectar
overwinters as a caterpillar in a leaf they cut and roll into a tight tube, a hibernaculum
Red-spotted Purple (2.25 - 4")
caterpillar food: cherries, poplars, oaks, willows, basswood
adults feed on sap, dung, carrion, rotting fruit and flowers
overwinters as a caterpillar in a hibernaculum
Great Spangled Fritillary (2.25 - 4")
caterpillar food: violets
adults feed on nectar
overwinters as a newly-hatched caterpillar
Northern Crescent (1.25 - 1.87")
caterpillar food: asters
adults feed on the nectar of dogbane, fleabane, and white clover
overwinters as a 3rd stage caterpillar
I need more milbert's tortoiseshell's because we're overun with nettles. Glad to find out they eat nettles. Thanks for the valuable info.
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