116 



ARTHROPODA 



7. NEUROPTERA, EPHEMERIDA, AND ODONATA 



A typical example of the Neuroptera is the hellgramite 

 (Corydalis cornutus) whose larva, the black crab, or dobson, 



is the f a v o r it e 

 among fishermen as 

 a bait for black 

 bass. It is found 

 under logs and 

 stones in the shal- 

 low water of clear 

 streams, which it 

 leaves in late spring 

 to hide under some 

 object on the bank 

 and to transform to 

 a naked pupa. A 

 week or more later 

 it assumes the adult 

 form which may 



FIG. 135. - Catching the larv* of hellgramites. ^^ ^ ^^ 



around the electric lights at night. The egg deposits 

 form conspicuous white spots the size of a nickel on 



FIG. 136. The dobson, natural size. 



