THE INSECTS OF THE GREEN LANES. 



189 



rigid, with a black head. It changes within the 

 place it has excavated, to the pupa state, and in 

 about three weeks afterwards, makes its appearance 

 in the world as a minute moth, whose utmost 



Fig. 132. 



Mined Oak Leai, ,md Larva of Micropteryx subpttrpurella, enlarged. 



expanse of wings is not more than the third of an 

 inch ! Some of the larvae of beetles also are leaf- 

 miners, especially that group which, on account of 

 their prolonged snout, are commonly called "weevils." 

 One cannot be surprised at the number of outward 



