AQUATIC INSECTS 



female is similar but each front wing has a white spot near 

 the tip (Fig. 165). The female, unattended by the male, 

 deposits her eggs in plant stems just below the surface of the 

 water. 



Occurrence. — Nymphs of various sizes may be found in 

 shallows the year round. Length of fullgrown nymph, about 

 I inch. The adults are on the w4ng from the middle of April 

 to the last of August. 



Fig. 166. — Nymph and adult of damselfiy, Het- 

 CBrina americana. 



221 



