COLEOPTERA. 



163 



wood, nuts, etc., and are well adapted to their environ- 

 ment by having very small, weak legs, or by being 

 absolutely footless. In most of the members of the 

 family of Weevils (Curculionidae) the active, six-legged 

 stage of the larva, represented in the hfe-history of 

 Epicauta and Stylops, is not passed through, as the 

 larva is apodous from the start. This is another illus- 

 tration of the law of accelerated development, by 

 which certain stages are either passed over quickly or 

 entirely skipped (see pp. 112, 283, 284). 



CERAMBYCID.E. 



This family includes a large number of borers, among 

 which is the common apple-tree borer, Saperda Can- 

 dida, Fabr., and the hickory-tree borer, Clytiis pictiis 

 (Fig. 117). This is a black beetle marked by spots of 



Fig. 117. 



beautiful yellow hairs. The prothorax and metathorax 

 are large, especially the latter, while the mesothorax 

 is small. The eyes are of medium size and the 

 antennae are long, giving the name of Longicorns to 

 the family. The legs are situated at the extreme pos- 

 terior edge of their respective segments. Fig. 117,^, 

 is the larva. The grubs of the Cerambycidae have 



