ATTACKING THE LEAVES. 



291 



brown or blackish color, legs greenish, marked with dusky. 

 Most of the lice are wingless, but some have wings clear and 

 glassy, with brownish veins. This is believed to be the same 

 species as that which infests the vine in the southern parts of 

 Europe, viz., Aphis vitis, but the insect has not yet been suffi- 

 ciently studied to decide this with certainty. They cluster in 

 thousands on the ends of the branches, causing the leaves to 

 curl upland the vine to appear very unsightly. They are 

 seen early in the summer, and usually continue but a few- 

 weeks, as their enemies, the lady-birds and other predaceous 

 insects, increase so fast as to decimate them within that time. 

 Tliey are common in the South -p^^ g^,, 



and in the Middle States, but 

 occur only occasionally in the 

 more northern districts. 



Should occasion require the 

 application of a remedy, the 

 vines may be syringed with 

 weak lye, tobacco - water, or 

 strong soap-suds. 



No. 165. — The Broad-winged 

 Katydid. 



Cyrtophylhis concavus (Harris). 



This is perhaps our common- 

 est species of katydid, and may 

 be distinguished from the other 

 species by the greater breadth 

 and convexity of its wing-cov- 

 ers, which, with their strong 

 midrib and regular venation, 

 much resemble a leaf. The in- 

 sect (Fig. 302) is about an inch 

 and a half long, the female 

 having a projecting ovipositor or piercer, with which the eggs 

 are thrust into crevices and soft substances. The ecofs are 



