466 ANNUAL REPORT OF NEW-YORS 



BUTTERS' UT. LEAVES 



cording to the description is marked precisely like the arcuata of 

 Say, but the dimensions assigned it are a fourth larger than those 

 of that species. 



192. Obtuse Clastoptera, Clastoptera obtusa, Say. (Homoptera. Ccr- 

 copidae.) 



A short thick almost circular leaf-hopper of a gray color with 

 fine transverse wrinkles and three brown bands anteriorly, its 

 wing covers clouded with tawny brown with streaks of white and 

 a coal black spot near their tips. Length 0.2.2. 



From the middle of July till the end of the season this insect 

 may frequently be met with on quite a number of different trees 

 and shrubs. Although tlie species of this American genus very 

 much resemble those of the genus Penihimia they certainly per- 

 tain to the family Cercopidse and not to that of Tettigoniidse in 

 which they are placed by Mr, Walker. 



193. Butternut Tixgis, T\ngis Jugianais, new species. (Ilemiptera. 

 Tingidae.) 



Puncturing the leaves and sucking their juices, a small singular 

 bug resembling a flake of white froth, its whole upper surface 

 composed of a net- work of small cells, an inflated egg-shaped pro- 

 tuberance like a little bladder on the top of the thorax and head, 

 the sides of the thorax and of the wing covers except at their tips 

 ciliated with minute spines, the wing covers flat and square with 

 their corners rounded, a large brown or blackish spot on the 

 shoulder and a broad band of the same color on their tips with an 

 irregular whitish hyaline spot on the inner hind corner; the body 

 beneath small and black, the antennse and legs honey-yellow. 

 Length 0.14. 



This insect becomes common on the leaves of the butternut m 

 May and continues through the summer and autumn. It may 

 sometimes be met with also on birch, on willows, and other trees. 

 It corresponds with the arcuata of Say (Heteropterous Hemiptera, 

 p. 27) in every respect, except that the outer margin of the wing 

 covers is rectilinear and not arcuated or concavely excavated, and 

 their veins are not ciliated with minute erect spines. I have 

 never met with the arcuata in the state of New- York, but have 

 gathered it from bushes in the outskirts of the city of Chicago. 



