34 



HOW INSECTS ABE CLASSIFIED 



Fig. 33. — A hntterRy, Argynnis. Original. 



are fitted for sucking. The adults in this group take only liquid 

 nourishment, or frequently none at all. The larvae, however, are 



provided with well- 

 developed jaws, 

 adapted for biting 

 and chewing. It is 

 in the larval stage 

 that the represent- 

 atives of this order 

 are injurious. The 

 moth itself, or but- 

 terfly, is harmful 

 only in the sense 

 that it is the parent 

 of a succeeding de- 

 structive stage. 

 The antennae 



are of three general types, and separate the order into its sub- 

 groups. Butterfhes have slender antennae composed of a large 

 number of indistinct rings or segments, with an enlargement or club 

 at the end. In the skippers the club at the end of the antenna is 

 somewhat elongated, and is turned back at the farther end in a slender 

 hook. The antennae of moths are more or less feathered, often elabo- 

 rately so. Butterflies are usu- 

 ally on the wing in the day- 

 light hours, while moths have 

 a tendency to fly at night. 

 Butterflies habitually rest with 

 their wings folded together ver- 

 ticafly above the body; skip- 

 pers may hold the wings in a 



similar position, or may hold 



,, « , . X- 1 J Fig. 34. — A skipper, Atrytone. 



the front wmgs vertical and 



the hind wings horizontal; moths habitually rest with their wings 



held horizontal or roof like, or curved around the abdomen. The 



Original. 



