
Eastern Tiger Swallowtail (Papilio glaucus)
male, underside
St. Charles, Kane County, Illinois
May 18, 2001
Photo by Tom Peterson
Illinois Butterfly Monitoring Network
The Illinois Butterfly Monitoring Network engages citizen scientists in the process of collecting quantitative data on butterfly populations.
Eastern Tiger Swallowtail (Papilio glaucus)
male, underside
St. Charles, Kane County, Illinois
May 18, 2001
Photo by Tom Peterson