Rhamnusium bicolor is a species of beetle in the family Cerambycidae. The species is widespread in Europe. It was first described by German biologist Franz von Paula Schrank (1747–1835) in 1781.
The adult beetle is in size and flies between May and June. The development cycle is 2-3 years.
There are eight accepted subspecies:
Rhamnusium bicolor constans Danilevsky, 2012 Rhamnusium bicolor demaggii Tippmann, 1956 Rhamnusium bicolor graecum Schaufuß, 1862 Rhamnusium bicolor italicum Müller, 1966 Rhamnusium bicolor juglandis Fairmaire, 1866 Rhamnusium bicolor lenkoranum Danilevsky, 2012 Rhamnusium bicolor praeustum Reitter, 1895 Rhamnusium bicolor testaceipenne Pic, 1897
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