﻿AMERICANA 



VOL. YI. BROOKLYN, DECEMBER, 1890. 



No. 12. 



REVIEW OF THE NORTH AMERICAN SPECIES 

 OF BYTHOSCOPUS. 



BY E. P. VAN DUZEE. 



Genus BYTHOSCOPUS Germar.* 



Head with the eyes as wide as the pronotum. Vertex short, of nearly 

 equal length across its whole width, much deflexed and confounded with the 

 front in a common convexity. Ocelli placed on the front of the face opposite 

 the middle of the eyes, to which they are a little more approximated than to 

 the hind margin of the vertex. Antennae rather short, inserted under a 

 prominent oblique ledge. Front in the 9 rather convex, apex broad, form- 

 ing a rounded lobe each side of the base of the clypeus. Clypeus broad, 

 ovate, suddenly contracted at the base, narrowed to the apex, where the sides 

 are somewhat compressed around the base of the rostrum. Lorse long and 

 narrow, a little tumid. Cheeks narrow, forming a slender margin beyond the 

 lorae, but not attaining the apex of tlie clypeus. An oval, minutely punc- 

 tured area occupies each side of the front basally. In the cT the lorce and 

 base of the clypeus are confused with the greatly swollen apex of the front, 

 obliterating the sutures and imparting a square appearance to the face. Pro- 

 notum moderately convex, anterior margin rounded, posterior concave; 

 lateral angles not prominent; latero-posterior angles rounded; surface cov- 

 ered with transverse ridge or rugose punctures arranged somewhat obliquely 

 behind the eyes. Scutellum large, with a transverse impressed line before 

 the apex and a nearly smooth area within the basal angles. Elytra surpassing 

 the abdomen a little, the suture straight; costa feebly convex; membrane 

 without an appendix; texture submembraneous, nervures commonly distinct; 

 ordinarily there are one basal, two discal, three anti-apical and five apical 

 areoles. Wings membraneous, nervures distinct, supernumerary cell wanting 

 (see Ent. Amek. v, p. i66). 



* For generic synopsis see Ent. Amer. v, p, i66, September, 1889. 

 Entomologica Americana. \'o1. VI. 12 Decembkr, 1S90. 



