FAMILY FULGORID^ 



101 



is limited to a rather short i)eriod, but the injury caused 

 by puncturing the twigs for egg deposition does not fully 

 appear for a year or two after the eggs are deposited. The 

 scars and distorted growth of the twig may seriously dis'^ 

 figure and weaken the branch. It is rather difficult to apply 

 any distinct remedy because they occur on so many different 

 kinds of plants. Cutting off the infected twigs would be 

 possible but hardly practicable on any large scale. The 



Fig. 58 Fig. 59 



Figs. 58 and 59. — Ormenis pruinosa Say: at right, a and b, adults; at 

 left, a, eggs, much enlarged; b, eggs in bark; c, twig with eggs. (After 

 Lugger.) 



application of kerosene emulsion would be effective at the 

 same time that other forms are developing, thus killing off 

 more than one si)ecies at one time. 



Family Fulgoridae. — The family Fiilgorul(F presents ex- 

 treme specialization in some directions. These occur in the 

 head region instead of the prothoracic region. In one 

 of the most extreme forms the head is spread out into a 

 great peanut-like structure, and in one form there is an 



