Dec, 1915] Jassoidea of Missouri 75 



Deltocephalus albidus Osb. & Ball. Recorded from the collec- 

 tion of the Experiment Station at Columbia. 

 Deltocephalus obtectus Osb. & Ball. Quite scarce. Recorded 



only from Mississippi County. Near swamps. 

 Deltocephalus misellus Ball. Captured but one adult, in a corn 



field near Mississippi River at West Quincy. 

 Deltocephalus productus Walker. Rather scarce. Swept from 



clover and weeds at Stanberry. 

 Deltocephalus debilis Uhler. Quite common on grasses in rye 



and wheat stubble fields about Hannibal and West Quincy. 

 Athysanus exitiosus Uhler. Occurs throughout the state. With 



the exception of Draeculacephala mollipes it is the most 



common jassid of northwestern Missouri. Adults present 



at all seasons of the year. Food plants include wheat, oats, 



corn, alfalfa, grasses, and weeds. 

 Athysanus bicolor VanDuzee. Numerous in southern part of 



state, especially in low or bottom lands. Feeds upon many 



weeds, grasses and alfalfa. 

 Athysanus obtutus VanDuzee. Not common. A few adults 



taken from sweeping wheat fields in the early spring. 



Recorded only from Mississippi County. 

 Athysanus plutonius Uhler. Rather rare. Occasional specimens 



swept from wheat in Scott and Mississippi Counties. 

 Athysanus curtisi Fitch. Only one adult captured sweeping 



weeds at Hannibal. 

 Eutettix clarivida VanDuzee. Recorded from Lutesville and 



Charleston, from millet and grasses. Nymphs numerous 



during August. 

 Eutettix osborni Ball. Collected by Geo. W. Barber at Poplar 



Bluff, from White Aster, used in ornamental plantings. 

 Eutettix seminuda Say. Rather numerous but not abundant. 



Occurring in all parts of the state. Collected principally 



from weeds and woody shrubs near swamps. Also from 



grape vines. 

 Eutettix strobi Fitch. Only one adult captured. Feeding on a 



leaf of a willow tree growing in a swamp. 

 Phlepsius apertus VanDuzee. Very common throughout the 



state, especially in the southeast section. Occurs in great 



numbers on alfalfa and clover upon which crops they must 



be considered a pest. Also recorded from grasses and weeds. 



Most abundant during July and August. 



