KEY TO THE GROUPS— CATERPILLAR. 4o 



Key to the Groups, based ok the Caterpillar. 



A\ Head and body not separated by a strongly and ab- 

 ruptly strangled neck. 

 B\ Body generally covered with spines; when naked or 



merely covered with pile, either the 

 head is tubercnlate, or the last seg- 

 " ment ends in a fork, or the body 

 joints are crossed by not more than 

 three creases. 



(Family Brush-footed Butterflies.) 

 C\ Last segment entire, rounded. 

 D\ Body with no spines. 



e\ Body furnished with a few long fleshy fila- 

 ments. 



(Subfamily Danaids.) 1. Anosia. 



e'. Body covered with pile only 17. Anwa. 



W, Body covered with spines. 



(Most of Subfamily Nymphs.) 

 E'. Body uniform, with uniform series of taper- 

 ing spines. 

 F'. Spines more like tubercles, leathery, not 

 horny, their sides crowded with 

 needles, no one at tip distinguished 

 from the others. 



(Tribe Crescent-Spots.) 

 g'. Body distinctly tapering in front, cross- 

 striped on all but the front seg- 

 ments. 



