168 



LOCUSTS, BLITTKKFLIES, BEKS, WASBS 



the two iiiaxilk' is carried coiled beneath the head 

 (Fig. 107). 



Butterflies live upon the nectar extracted from flowers with 

 the proboscis. 



Locomotion of the butterfly. — This insect has two 

 methods of locomotion, namely, fl3'ing and walking. The 



Maxilla 



Maxilla 



legs are weak and not 

 very efficient organs 

 for walking. At best, 

 the A^-alk of a butter- 

 fly is jerky and feeble. 

 They depend mainly 

 upon their wings for 



*■ . , locomotion, and these 



Jiir Tubes ' 



Fig. 106.— ('ross section ortheprobo.scis of a Organs are eveiy effi- 



butterfly. After ('oinstock. ^:^^^^ rpj^^ g-^j^^ -^ 



usually irrcgvflar, but is swift and capable of long dura- 

 tion. Some butterflies migrate regularly according to the 

 seasons. 



The form of the butterfly's antennae. — The antennte are 

 composed of short, thick segments ami are straight. More- 

 over, they are always enlarged 

 at the ends with a sort of knob. 



Life history of the butterfly. 

 — In its life history the but- 

 terfly differs most markedly 

 from the locust. Tlie former 

 has what is known as an 

 indirect development or a 

 c o m p 1 c 1 metamorphosis. 

 The female lays her eggs on ^'"r ^"'- ^,"""' "^ "" "'"*''• "'■°"'- 



' ' iiip iiiuiitli p;ir1s iiioiiihoti into a 



the caljbage leaves and from long proboscis or sucking tube. 



