A NEW SPECIES OF CICADELLID^ FROM WISCONSIN. 



DwiGHT M. DeLong. 



Deltocephalus marginatus n. sp. 



Closely resembling D. bilineatus, but with longer head and a 

 black transverse band across margin of vertex between the 

 eyes. Length 4 mm. 



Vertex produced, twice as long at middle as next the eyes, 

 width between the eyes equalling the length. Antennae two and 

 one-half times as long as vertex. Pronotum as long as vertex, 

 produced and very strongly curved on anterior margin. Elytra 

 quite long and slightly flaring; middle antiapical cell very long, 

 constricted along central half. 



Color: Creamy white with testaceous and dark markings. 

 Face uniform creamy white, unmarked. Vertex with black, 

 longitudinal, median, impressed line on middle half; two pale 

 testaceous bands arise about one-third the distance from 

 apex and extend across pronotum to middle of apex, where 

 they end in two black spots 

 on the disc. Each of these is 

 bordered interiorly on the vertex 

 by a fine black line, broken into 

 spots, which converge at the 



D mirjina-tyj. 



apex; also partially bordered 



exteriorly by a small black 



dash. A black transverse band 



extends across the margin of 



vertex and recurves onto vertex 



at either end along the eyes. Pronotum with four longitudinal 



testaceous bands. Veins of elytra white; the clavus and claval 



veins along suture broadly margined with testaceous. Outer 



margins of inner and two outer apical cells and adjoining costal 



cell, fuscous. Venter pale yellow, female segment with a large 



round black spot either side of notch. 



Genitalia : Female last ventral segment longer than preced- 

 ing, with posterior margin broadly notched, sides of notch 

 somewhat convexly rounded. 



Described from two specimens from Amery, Wisconsin, 

 collected August 13, 1916. In the Wisconsin list these were 

 considered as D. bilineatus but with additional study it seems 

 that they are quite distinct in the points mentioned. It may 

 prove to be only a variety of that species, but I believe deserves 

 specific rank. 



2 2S 



