What is the difference between the Great Capricorn Beetle and the Rhesus Capricorn Beetle?

What is the difference between the Great Capricorn Beetle (Cerambyx cerdo) and the Rhesus Capricorn Beetle (Dorcadion carinatum)?

The Great Capricorn Beetle and the Rhesus Capricorn Beetle are both insects in the Cerambyx family of longhorn beetles.

The Great Capricorn Beetle and the Rhesus Capricorn Beetle both have hard, protective wing cases, called elytra, that are reddish-brown at the tips.

The Great Capricorn Beetle is thinner than the Rhesus Capricorn Beetle.

Capricorn Beetle

Great Capricorn Beetle (left) and Rhesus Capricorn Beetle (right)

 

Despite being a member of the longhorn beetles, the segmented antennae of the Rhesus Capricorn Beetle are much shorter than the segmented antennae of the Great Capricorn Beetle.

The antennae of the male Great Capricorn Beetle are longer than its body. The female has antennae as long as her wing cases.

The Great Capricorn Beetle is widespread in Europe, the Middle East, and the Caucasus region, whereas the Rhesus Capricorn Beetle has a smaller distribution in the Caucasus region and eastern Europe, specifically in Russia, Kazakhstan, Azerbaijan, Ukraine, and Georgia.

Great Capricorn Beetle

Great Capricorn Beetle

Rhesus Capricorn Beetle

Rhesus Capricorn Beetle

 

 

Photographer: Martina Nicolls

Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM

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