LEAFHOPPERS OF MAINE. lO/ 



AA. Ocelli on margin between vertex and front Jassina 



b. Inner sector of elytra twice forked three ante-apical cells in elytra, 

 c. Head flattened, margin thin, acute, sometimes foliaceous. 



Parabolocratus 

 cc. Head margin usually angular or rounded not sharp edged or if 

 so only on anterior portion, 

 d. Elytra with two cross veins, 

 e. Vertex produced and usually angled on border, front very 

 long and narrow. Platymetopius 



ee. Vertex usually less angular, front broad, clypeus narrow at 

 tip. Deltocephalus 



dd. Elytra with one cross vein between sectors. Scaphoideus 



ccc. Head broad usually blunt edged. 



f. Elytra usually short, seldom longer than abdomen, often 

 very short and wings wanting, 

 g. Head broad ovipositor short little if any longer than 

 pygofer. Athysanus 



gg. Ovipositor long exceeding pygofer. 



h. Gray or with golden iridescence Athysanella 



hh. Black robust head very blunt. Driatura 



ff. Elytra usually long exceeding abdomen, mostly large species 

 with short heads. 



i. Elytra with fine ramose lines not restricted to trans- 

 verse band. Phlepsius 

 ii. Elytra without ramose lines or if present restricted 

 to cross band behind middle, 

 j. Vertex with transverse furrow. Eutettix 

 jj. Vertex without furrow 



k. Pronotum strongly curved in front, side very short 



Thamnotettix 

 kk. Pronotum less curved nearly as long at side as at 

 middle, side carina long. Chlorotettix 



bb. Inner sector not forked, two ante-apical cells in elytra. 



Cicadulina 



1. 'Wing with 3 apical areoles Cicadula 



11. Wing with 2 apical areoles. Balclutha 



Acocephalus striatus. (Linn.)* 



This species has been one of the very abundant ones in Maine and its 

 general occurrence in pastures and meadows, also grain fields and upon 

 variety of other plants places it among those which must be counted of 

 economic importance. The adult is quite variable. The females ranging 

 from a light green or pale yellowish or straw color to nearly brown with 



*The synonomy of this species is confused and I follow Van Duzee's 

 Catalogue in the reference to Linnaeus. 



k 



