258 ENTOMOLOGICAL NEWS. [June, '17 



From a large number of females and several males reared 

 from the eggs of Ischnoptcra, Plummer's Island, Maryland 

 (E. A. Schwarz). 



Types: Catalogue No. 20932, U. S. National Museum, one 

 male, three females on tags, the antennae of each sex on a 



slide. 



i < ' 



A new Species of Corythuca from the Northwest 

 (Heterop., Tingitidae). 



By EDMUND H. GIBSON, U. S. Bureau of Entomology, Wash- 

 ington, D. C. 



During the past January the writer received from Mr. E. J. 

 Newcomer, of the Bureau of Entomology, stationed at Wenat- 

 chee, Washington, specimens of what proves to be a new 

 species of Corythuca. They were collected by Mr. Newcomer 

 from prarie sunflower, Balsamorhiza sagittata Pursh, the type 

 locality of which is known to be dry barren hills in the Rocky 

 Mountains and its range from British Columbia and Montana 

 to California and Colorado. 



Corythuca pura n. sp. 



Antennae with few long hairs, first segment about twice the length 

 of second, fourth incrassated at the middle. Rostral groove prominent 

 and rounded at the apex; rostrum reaching to middle coxae. Hood 

 considerably raised, about one half as high as long, evenly reticulated 

 and spined, median reticulation subprominent; rear of hood more or less 

 concave, but distinctly globose. Membranous pronotal margins evenly 

 reticulated and closely spined. Pronotum and base of triangular pro- 

 cess punctate with apex reticulate. Triangular process bordered entire 

 length with prominent membrane disappearing near apex. Median ca- 

 rina high and prominent with two rows of areolae, the top row not 

 greatly reduced in size. Length 3.8 mm., width 2.5 mm. 



Color, antennae ochraceous with apex slightly darker. Eyes black. 

 Above entirely white, no spots of fuscous or color markings. Elytra 

 subhyaline to opaque. Beneath entirely black, but with light brown 

 legs. Beak same color as legs becoming darker towards apex. 



This species is near C. Jiispida Uhl., but from which it may 

 be separated by its larger size and by having the median carina 

 of the pronotum higher and with two rows of large areolae 

 and the margin of which is not so concave or curving. 



Described from three females and one male which are de- 

 posited in the collection of the U. S. National Museum. 



