Fig. 50. a, Aphrophora quadrinoiata; b, Lepyronia quadrangularis ; 

 c, Aphrophora parallela; d A. parallela. Nymphal molt from last 

 instar; Clastoptera obtusa Say; e, male; /', female; Clastoptcra proteus 

 Fitch, g, female; /;, /, two varieties of male. (Original.) 



