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.
ReplyDelete