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SCHOOL ENTOMOLOGY 



and larvae. The adults are moderate sized moths with 

 the wings rather narrower and more 

 pointed than those of the Noc- 

 tuids. Otherwise they are similar 

 in the conformation of the bodies. 

 In color the tiger-moths are either 

 light or strongly marked. Some 

 are pure white, some white with 

 yellow, black or red markings; 

 some, the typical tiger-moths, are 

 black, marked with red or orange 

 bands and spots. 



Larvae of Ardiidce are hairy 

 caterpillars which have colors of 

 about the same range as those 

 shown by the adults. Few species 

 are injurious. The most important 

 one is the Fall Web-worm which 

 feeds on foliage of shade and fruit 

 trees in late summer and early fall 

 and forms unsightly webs over the 

 ends of branches, the worms living 

 in colonies within these webs. 



The most commonly noticed 

 of the Arctiid larvae is the larva 

 of the Isabella Tiger-moth. This is 

 a red and black, hairy caterpillar 

 about an inch and a half in length 

 which is seen in the fall hurrying 

 about from place to place. It is so 

 common that it has given rise to the 

 saying " Hurrying like a caterpillar in the fall." It is also 

 supposed by many people to foretell the nature of the 



FIG. 54. Types of Moths 

 (Ardiidce). Reduced. 



1, Isabella Tiger-moth; 2, 

 the Tiger-moth; 3, the Acrsea 

 moth; 4, the Tessellated 

 Tiger-moth; 5, the Clymene 

 moth. 



