Triệu chứng This beetle has a strong affinity for cereals such as oats, barley, and rye, but its favorite host is wheat. It also has a variety of alternate hosts, such as corn, sorghum, and grasses. The larvae feed on the upper epidermis of the leaves and cause the main
Cereal Leaf Beetle
Sâu bọ
Triệu chứng
This beetle has a strong affinity for cereals such as oats, barley, and rye, but its favorite host is wheat. It also has a variety of alternate hosts, such as corn, sorghum, and grasses. The larvae feed on the upper epidermis of the leaves and cause the main damage of the entire life cycle. Their feeding habit is characterized by the removal of the leaf tissues down to the lower cuticle, leaving thin, long, white scars or streaks that can be numerous in case of infestation. However, the adult beetles usually migrate to other plants or fields as they feed, meaning that severe damage to a single field is rare. From the distance, an affected field may look weathered and old, but usually damage does not exceed 40% of the total area. The beetle can be a significant and perennial crop pest in some cereal-growing regions.
