Bul. 889, U. S. Dept. of Agriculture. PLATE lI. 
Fic. I.—IRRIGATION DITCH OVERGROWN WITH YELLOW SWEET CLOVER AND 
COMMON MALVA, GIVING RISE TO FIRST GENERATION OF THE CLOVER 
STEM-BORER (LANGURIA MOZARDI). 
Fic. 2.—IRRIGATION DITCH BANK FENCED AND PASTURED BY THE USE OF 
SHEEP, ELIMINATING WEEDS AND WASTE GROWTH AND PREVENTING INSECT 
DEVELOPMENT IN SUCH LOCATIONS. 
THE CLOVER STEM-BORER. 
