ORDER. HEMIPTERA 



99 



greatest variety of forms, many very grotesque. The group 

 is large and includes many species. There are probably 

 fifty species in the latitude of the Northern States. 



One of the most common is the buffalo treehopper, 

 Ceresa buhahis, which abounds on thorn, ap})le and maple 

 trees and is frequently found on other vegetation. It is 

 of an apple-green color, with faint, light yellow mottlings 



Fig. 56. — Buffalo treehopper: n, female; b, enlargement of foot; 

 c, antenna; d, wing; /, g, ovipositor; /(, ?, terminal segment of male abdomen; 

 e, terminal segment male taurina. (After Marlatt, Bur. Ent., U. S. Dept. 



Ag.) 



or specks, distributed over the pronotum. The pronotum 

 itself stands out in two prominent horns. It extends back 

 in a very pronounced spine. The eyes are quite prominent 

 and stand out at the sides of the head. There are four species 

 closely related, but this one is the most abundant. Its life 

 history is quite characteristic for the group. They are 

 single-brooded and the winter is passed in the egg stage; 

 the eggs are deposited in twigs of various trees in little slits 



