- 20 - 
ECONOMIC IMPORTANCE 
Populations of Hype ra brunnei pennis on alfalfa during the 1940 season 
were insufficient to inflict material injury to a single field. In no 
instance did feeding become noticeable or even approach damaging proportions. 
Larvae were fairly abundant and caused slight injury only in a few small 
patches of sourclover, a plant of no economic importance in the Yuma Valley 
of Arizona. This indicated that the insect is capable of inflicting damage 
under certain conditions, but too little is yet known of its potentialities 
to warrant a conclusion as to its status as an economic insect. All that can 
be said at this time is that winter and spring pasturing and cutting of 
alfalfa as regularly practiced in the Yuma Valley apparently would tend to 
prevent this insect from becoming a serious pest of this crop in that lo- 
cality. 
