A PRELIMINARY LIST OF THE J ASSOIDEA OF MISSOURI 

 WITH NOTES ON SPECIES. 



By Edmund H. Gibson and Eric S. Cogan, U. S. Bureau of Entomology. 



The following preliminary list of the Jassoidea of Missouri 

 is mainly the result of collections and notes made by the authors 

 during the summer months of 1915. On account of the lack of 

 records for this state the authors were prompted to undertake 

 such a survey. As far as possible collections were made so as 

 to embrace all conditions in different sections, giving some 

 attention to ecological relations. The list comprises some 

 98 species. 



BYTHOSCOPIDAE. 



Macropsis apicalis Osb. & Ball. A few specimens swept from 

 weeds at Charleston, Mo., during the late summer. 



Bythoscopus distinctus VanDuzee. Found in great numbers 

 on willows in northern Missouri. 



Pediopsis viridis Fitch. Not common. Taken from willows 

 near drainage canals in southeast Missouri. Somewhat 

 more numerous in northern part of the state. 



Idiocerus nervatus VanDuzee, The only species taken from 

 willows about Chillicothe. 



Idiocerus verticis Say. Listed by VanDuzee as occurring in 

 the state. 



Idiocerus crataegi VanDuzee. Swept from grasses at Chillicothe. 



Idiocerus snowi Gill & Baker. Recorded from Lutesville and 

 Charleston. Feeding on millet and grasses. Nymphs 

 numerous during August. 



Agallia sanguinolenta Prov. Most plentiful in southern part of 

 state. A decided pest of clover and alfalfa. Other food 

 plants include wheat and several weeds. Adults abroad 

 in fields all seasons of the year. Abundant in northern 

 Arkansas. 



Agallia constricta VanDuzee. One of the earliest jassids to 

 appear in the spring. Most numerous on grains. Attacks 

 wheat, rye, oats, alfalfa and grass. Abundant in southern 

 counties. 



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