BULLETIN 238. 



LEAFHOPPERS OF MAINE.* 



Herbert Osborn, Consulting Entomologist. 



Introductory. 



The insects known as leaf hoppers are technically included in 

 the group Jassoidca but frequently the term is madte to include 

 the froghoppers, Ccrcopidac, and some O'f the Fulgoridae, the 

 minute grass feeding species being very similar in hahit. 



While this report deals mainly with the leafhoppers proper 

 it has seemed worth while to include some mention of the 

 related forms and while less effort has been given to their col- 

 lection it will be seen that some O'f the species on account of' 

 their abundance and attack on cultivated plants are not to be 

 overlooked in any careful study of this general group of plant 

 feeders and their relation to useful plants. 



The principal economic importance rests on their attacks 

 upon such farm crops as oats, timothy, wheat and, the various' 

 cereal and forage crops, on fruits, of various kinds and Uipon 

 forest and shade trees their occurrence in this conneotion being 

 very general indeedl 



No' previous systematic or comprehensive study of the Maine 

 species of this group has been published and but few scattering 

 records of species occur in the references to- the Maine fauna, 

 a,pparently very few specialists having collected here for this 

 group. The Y^n Duzee catalogue includes a number of species 

 credited as occurring in the state or with the general statement 

 Maine to California, but very few specific citations. My own 

 collection includes a nnmber of species coilected by Mr. O. O. 

 Stover who at one time proposed to publish a list of the Maine 



*Papers from the Maine Agricultural Experiment Station : Entomol- 

 ogy No. 78. . 



