Acmenychus inermis

Acmenychus inermis is a species of beetle of the family Chrysomelidae. It is found in Azerbaijan, China, Iran, Kazakhstan, Mongolia, Nepal, Russia, Turkey, Turkmenistan and Tadzhikistan.

Description

Adults reach a length of about 5.5-6.5 mm. They have an elongate body and are completely black. The elytra have four raised ribs, each armed with curved spines.

Life history

The recorded host plants for this species are Phragmites communis and Phragmites australis.