86 MAINE AGRICULTURAL EXPERIMENT STATION. I915. 



For the species thait affect forest trees it is of course im- 

 possible to make any direct application and there seems to be 

 little opportunity to use measures of control. It seems possible, 

 however, that when tirriber is being cut that a little attention to 

 the disposition of 'branches and twigs, which may include the 

 eggs of these insects, would have some effect in reducing the 

 numbers. If these are cut at the time when eggs are included 

 and simply left scattered in the forest the larvae are hatched, 

 are likely to secure sufficient food to develop, and then be 

 scattered on standing timber that is left and of course cause a 

 greater amount of damage than where the forest has been 

 untouched. 



CLASSIEICATIOX. 



As an aid in the recognition of the different kinds of leaf- 

 hoippers it will be desirable to include certain keys and brief 

 d'escriptio'nis of the species and it may be remarked that the 

 memibers of this group are to 'be recognized generally by their, 

 minute size, none of the species reaohing more than one-half 

 mch in length and the great majority being from one-eighth 

 to o^ne- fourth inch long and usually rather slender with deli- 

 cate wiings. They rest usually with the legs drawn up well 

 to the front part of the 'body and in position for immediate 

 jumping and, when disituribed, they give strong leaps which may 

 carry them for several feet or enable them to take wing ana- 

 travel readily for some distance. The species that are com- 

 mon in grasses and low iheribage will 'be generally recognized 

 by the sudden jumping and short flight when they are disturbed 

 and in some instances, where they occur in considerable -ni-mi- 

 bers, their presence will be noticed, when walking through a 

 meadow or pasture, as there is a distinct swarm of these in- 

 sects rising as oine passes along. 



These leafhoppers are to be distinguished from the frog- 

 hoppers, Cercopidae fcy the structure of the hind tibiae, these 

 being slender, .prisTnatic in section with two series of small 

 Sfpines along the border w<hile in the Cercopidae there are two 

 or three spines along the tibia 'but a wide circlet or crovim of 

 spines at the tip. 



