LEAFHOPPERS OF MAINE. 113 



Color, above blackish from croAvded black or fuscous lines and dots, 

 i^ight border of vertex and dots of elytra as in female, face greenish 

 white in strong contrast to dark color above. 



Genitalia, — valve very long two or three times length of preceding 

 segment and nearly twice the length of the plates, subangularly rounded 

 behind, central part with smooth yellow or spotted disk and dark spotted 

 border, plates short, broad at base, outer edge strongly curved, the tips 

 running into very short blunt spatulate processes and not reaching end 

 of pygofer, surface with scattered short bristles. 



One male taken in 1913 and several in' 1914 associated with females in 

 ^ame ground evidently on same food plan but amongst mixed vegetation. 



While these have not been found mating with cuprasccns females the 

 very striking similarity except in coloration and size, the fact that this 

 form includes only males and the lighter cuprescent form only females 

 and their association in a very restricted area leaves no reasonable doubt 

 as to the connection. 



Platyiiictopius frontalis Van Duzee. 



Plaiymctopius frontalis Van Duzee Canad. Ent. XXII 112, (1890). 

 Plaiyinetopius frontalis Osborn Bull. 108 Bur. Ent. U. S. Dept. Aricul- 



ture. 



Dark brown or nearly black the face bright yellow on the cenitral pari 

 with a distinct brown or black border. Vertex acute but shorter than in 

 acutiis much shorter in male. Length 4 mm. 



This species has been recognized but once this season and this time 

 only from a nymph collected at the Bangor bog on Aug. 5th. The species 

 is common however in Mew York and X'ew England and it seems certain 

 that it must have a more general occurrence in the state. It ordinarily 

 occurs in grass-land and is very frequently taken in adult form frorn 

 oak trees. 



The nymph is characterized by the broad black margin of prothorax 

 and' abdomen enclosing a bright yellow stripe extending from head to 

 tip of abdomen. 



Platyiiietopius magdalensis Prov. 



Plaiymctopius magdalensis Provancher Faun. Ent. Can. p. 275 (i spm.). 

 Platyiiietopius obscurus Osborn Ohio Nat. V, 274 (1905). 

 Platyiiietopius obscurus Van Duzee Annals Ent. Soc. Am. Ill, p. 229. 



Similar to acutus but with the face distinctly brown. Length 5 mm. 



This species is common to a large section of the eastern U. S., but 

 apparently restricted locally to low ground or boggy situations. It was 

 taken at the Bangor bog, near Orono Aug. 5, 1913 at N. Harpswell Aug. 

 12, 1913 where it was taken mainly if not entirely from blueberry 

 clumps and the leaves of these plants showed much spotting and deaden- 

 ing evidently from these or other leafhoppers. 



