Acmenychus inermis is a species of beetle of the family Chrysomelidae. It is found in Azerbaijan, China (Xinjiang), 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.Confirmation of Acmenychus inermis (Zoubkoff, 1833) (Chrysomelidae: Cassidinae: Hispini) from Türkiye
Life history The recorded host plants for this species are Phragmites communis and Phragmites australis.
References