LIFE HISTORIES OF FROGHOPPERS OF MAINE. 279 



pair, the head is broadly cordate, the eyes prominent, and the 

 front similar to the preceding stage with a slight production of 

 the anterior border. 



In all stages the pleural lobes of the abdominal segment are 

 very large and occur on all segments to last, enclosing a broad, 

 deep channel which, as in related species, doubtless serves 

 especially in the enclosing of air to form the froth mass. 



This species is often taken in autumn in sweeping in grass 

 lands and probably has a variety of food plants, though so far 

 the nymphs have been found only on the Impatiens biflora. 

 The adults have been taken only in autumn and while it would 

 be unsafe to say that no spring generation occurs, the facts at 

 hand would indicate that there is a late deposition of eggs in 

 fall and that these eggs remain unhatched until midsummer of 

 the following year, then producing nymphs during August, or 

 possibly in late July, which mature very rapidly and give rise 

 to adults by the middle of this month. 



While the nymphs of this species very closely resemble those 

 of Philaenus they may be at once distinguished by the blunt 

 form of the front part of the head, appearing from above as 

 if the head had been pushed against some object and a circular 

 form made broadly truncate. 



Adults of this species have a quite characteristic appearance 

 with strongly sloping elytra which bear a blackish marking, the 

 angle of which touches the costal border. The general color is 

 gray with often a dull suffusion of purplish or brownish tint. 

 Length 6 mm. to 7 mm. 



BUSH AND TREE FROGHOPPERS. 



PARALLEL SPITTLE INSECT. 

 Aphrophora parallela Say. 



Although this insect is a very abundant one and has been 

 known to American entomologists for nearly a century, there 

 has been very little written about it nor any careful study of 

 its life cycle and habits. 



About the only account of its habits worthy of mention is 

 the original description by Fitch published in the Transactions 

 of the New York State Agricultural Society for 1857. 



