LEPIDOPTERA 



73 



it may continue 

 through the winter. 

 Some of the larvae 

 collected will be 

 found to be infested 

 with chalcid para- 

 sites which issuing 

 through the skin of 

 the host will spin 

 numerous small oval 

 cocoons thereon. A 

 larva thus affected 

 dies. 



Moths 



The Species Of the F IG . 6?. Photograph of cabbage butterfly and 



moths are more larva> the latter enlar 8 ed twice - 



numerous than the 



butterflies, and some of them are great pests in the larval 

 form, though harmless in the imago (adult) state. A 

 brief description of one or more species of the nine most 

 important groups will give a clear idea of the relation of 

 these insects to man. 



Hawk Moths (Sphingidae). The sphinxes are the 

 narrow-winged moths that visit the flowers at dusk and by 

 some are supposed to be humming birds. The tongue is 

 in some species four or five inches long, but is kept closely 

 coiled except when probing the flowers for nectar. The 

 larva is characterized by a horn on the top of the last seg- 

 ment, or in its place a glossy eye spot, giving it a formidable 



