242 INSECTS INJURIOUS TO THE GRAPE. 



No. 127. — The Four-spotted Spittle-insect. 



Aphrophora 4-noiata Say. 



Occasionally there appear upon the branches in June spot* 

 of white, frothy matter, resembling spittle, embedded in which 

 is found a soft, pale, wingless insect, which punctures the bark 

 and sucks the juices from the branch, at the .same time secreting 

 over and around itself this spittle-like covering. The perfect 

 or winged insect (see Fig. 249) is a flattened tree-hopper of a 

 brown color, which occurs upon the vines in the early 

 Fia. 249. part of July. It is about three-tenths of an inch 

 long ; its wing-covers are brown, with a blackish spot 

 at the tip, a second one on the middle of the outet 

 margin, and a third one at the base, with the spaces 

 between the spots whitish. Should this insect at any time 

 prove injurious, it may be easily destroyed by the hand while 

 in the soft, wingless form enclosed in its frothy covering. 



No. 128. — Signoret's Spittle-insect. 



Aphrophora Signoreti Fitch. 



This is an insect very similar in habits and appearance to 

 No. 127, surrounding itself while in the soft or larval condi- 

 tion with the same sort of frothy mass. When perfect, it is 

 a little more than three-tenths of an inch long, of a tawny- 

 brown color clouded with dull white, and thickly punctated 

 with black dots. The wing-covers have on their inner margin, 

 near the tip, a small white spot, and another larger one oppo- 

 site this on the outer margin ; but the wings are not spotted 

 with black as in No. 127. 



No. 129. — The Two-spotted Tree-hopper. 



Enrhenopa binotata (Say). 



This is a small but very odd-looking brown insect, with two 

 yellowish spots on the edge of the back, and a prolongation 

 in front like the beak of a bird. It sometimes punctures the 



