52 NATURAL HISTORY OF INSECTS. 



SECTION II. SUCKING INSECTS (Haustellata). 



LEPIDOPTERA (Butterflies and Moths). These insects are 

 provided with four thin wings, which are usually covered with 

 minute, flattened scales (such as the Semicolon Butterfly, Fig. 



Fig. 146. 



146, and the Orchard Tent-catarpillar Moth, Fig. 147)*; the 

 females of a few species are either wingless (as the female of 

 the Yellow Canker-worm Moth, Fig. 148), or the wings are 



Fig. 147. 



Fig. 148. 



small and rudimentary. The body and its appendages are also 

 covered with scales or short hairs. The mouth parts are fitted 

 for sucking, the upper lip and jaws being very small or rudi- 

 mentary, while the lower jaws are formed into a long tube or 

 proboscis, which, when not in use, is coiled up like the hair 

 spring of a watch (Fig. 115, g) and concealed beneath the 

 head; in a few species which take no food while in the perfect 

 state, the lower jaws are also i rudimentary. The transfor- 



* The anteunte of Butterflies always terminate in a knob (see Figs. 95 and 146): 

 but the antennae of Moths never terminate in a knob (see Figs. '97, 115, a, and 147) - 



