Nettling Insects 47 
even corn leaves. It is to be found throughout the Eastern and 
Southern United States. 
Automeris io is the best known of the nettling caterpillars. It is 
the larva of the Io moth, one of the Satumiidae. The mature eater- 
336. Io moth. Full grown larva. Photograph by M. V. S. 
33c. Io moth. Adult. Photograph by M. V. S. 
pillar, (fig. 33), which reaches a length of two and one-half inches, is 
of a beautiful pale green with sublateral stripes of cream and red color 
and a few black spines among the green ones. The green radiating 
spines give the body a mossy appearance. They are tipped with a 
