FOR A NEW CEREAL GRAIN INSECT PEST
Cereal Leaf Beetle has been found in Adams County Colorado
wheat fields at three farm locations on July 11, 2002. This beetle feeds
on the foliage of cereal grains such as oats, wheat, barley, corn and
rye. However this insect prefers wheat.
adult beetles are brightly colored. The first pair of wings (the elytra)
are hard and are metallic blue-black. The legs of adults and the prothorax
(first segment behind the head) are red. Cereal leaf beetle adults are
3/16 inch long. The brown-to-black larvae are often covered with black,
shiny mucus. Fully grown larvae are 1/4 inch long.
larvae feed on leaves by eating streaks of tissue from the upper surface
of the leaf. Larvae-damaged leaves have long, narrow feeding strips
between the veins. When adults are feeding in the early season, they
chew holes completely through the leaf.
adults can been found in grain at harvest. Check your wheat at this
time to see if this pest is on your farm.
and information is from Phillip Glogoza, Extension Entomologist for
North Dakota State University.