PHYLUM ARTHROPODA — CLASS INSECTA 



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Order Lepidoptera (The Butterflies and Moths). — In the Lepidop- 

 tera the larvae have biting mouth parts, while the adults have a 

 highly specialized suctorial structure. The antennae are of various 

 shapes and sizes. The two pairs of wings are covered with scales, 

 which are highly colored in many species. 



Fi^. 188. — Common weevils. 1, the bill-bug, Calendra mormon Chitt ; 2, Apion 

 proclive Lee. ; 5, the rose weevil, Rhynchites bicolor var. cockerlli Pierce. (Draw- 

 ings by Tanner.) 



This is the second largest order of insects. Approximately ninety- 

 five thousand species are recognized, of which about eight thousand 

 are found in the United States. The order is divided into the sub- 

 orders Rhopalocera, butterflies, and Heterocera, the moths. 



The larvae or caterpillars are among our most destructive insect 

 pests. They attack the foliage and fruit of the forest, orchard, 

 field, and garden; also, stored food and animal products. 



