Lesser Grain Borer
General Description
| · It is distinguished from the rest of the grain insects by its cylindrical shape and small size, as the adult is 2.5 mm long. The body is rough, dark chestnut or glossy black, and there are concave spots on the forewings arranged in the form of lines. The head is curved downwards and is equipped with powerful jaws that enable it to pierce wood and grain.
· The larva is 2.5-4 mm in length, and white. It is thick-bodied, cylindrical, and grub-like. The head is brown and arched and the legs are small. · The pupa is whitish in color (it looks like an adult). |
Credit: CSIRO |
Damage and Economic Implications
| · The larva and the adult insect feed on the stored grain and products (wheat, barley, corn, rice, pasta).
· The adult digs into the dried grains. · The larvae feed on the grains after being infested or feed on the damaged grains or products.
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Credit: Clemson University – Bugwood.org
