LIFE HISTORIES OF FROGHOPPERS OF MAINE. 287 



Philaronia bilineata Say. 



Another species which may be mentioned as belonging to the 

 Maine fauna, although it has not been found in any abundance 

 in the State, is the two-lined spittle insect Philaronia bilineata 

 which is a common species through the northern part of the 

 country from the White Mountains to the Rocky Mountain 

 region. It is a little larger and more robust than Philaenus 

 lineatus but much like it in general appearance. It has been 

 taken at Fryeburg in the western part of the State by Mr. C. P. 

 Alexander. The species has never been treated as of special 

 economic importance and it is evidently too rare in Maine to 

 need economic attention, but it often occurs in large numbers 

 on the vegetation of the plains in the Dakotas and Montana. 



CERCOPIDAE OCCURRING IN MAINE. 



A list of the species of this family known to occur in the 

 state may be of service in connection with the study of the leaf- 

 hoppers (Jassoidea) and the studies of the life histories of 

 some of the more important species from an economic stand- 

 point. 



The froghoppers are recognized by the conspicuous circle of 

 spines at the tip of the hind tibiae and the species occurring in 

 this region are mostly rather small insects of modest colors, 

 and the young are well known on account of the masses of 

 froth in which they are enclosed. 



The tree living or shrub living species are included in the 

 genera Aphrophora and Clastoptera while the species occurring 

 on grasses or low herbage are included in the genera Philaenus 

 and Lepyronia. 



Aphrophora parallela Say. Occurs on pine, often abundant. 

 Aphrophora saratogensis Fitch. Also a pine species is less frequent. 

 Aphrophora quadrinotata Say. Not abundant in collections so far. 

 Philaenus spumarius L. A very abundant species in meadows and 



mixed vegetation, living on other plants than grasses. 

 Philaenus lineatus L. Very common in meadows and grass land living 



on various species of grass. 



Lepyronia quadrangularis Say. Much less common here than the pre- 

 ceding species but evidently not a grass feeding species. 

 Philaronia bilineata Say, Fryeburg. (C. P. Alexander) 

 Clastoptera obtusa Say. A common species on alder, etc. 

 Clastoptera proteus Fitch. Common on dogwood. 

 Clastoptera .ranthocephala Germ. 



