Rhamnusium

Rhamnusium is a genus of beetles belonging to the family Cerambycidae, also known as longhorn beetles.

The species of this genus are found in Europe, especially in deciduous forests where they feed on dead wood of various trees.

One of the most common and widespread species of this genus is Rhamnusium bicolor, also known as the willow borer or the humpbacked longhorn.

This species has a black head and thorax, and yellow elytra with black spots and stripes.

It develops in dead wood of willows, poplars, birches, and other trees, often in hollows or stubs.

The adults emerge in spring and summer, and can be seen on flowers or tree trunks.

Rhamnusium is a genus of interesting and beautiful beetles that play an important role in the decomposition of wood in natural ecosystems.

• Rhamnusium beetles are active during the day and can be seen flying around willow trees in the spring and summer.

• Rhamnusium beetles are not considered pests, but they may cause some damage to the willow trees by chewing holes in the leaves and stems.

• Rhamnusium beetles have a few natural enemies, such as birds, spiders, and parasitic wasps.

The Rhamnusium is a type of beetle that belongs to the family of longhorn beetles or Cerambycidae.
It has a slender and elongated body, with a reddish-yellow to reddish-brown color.
The wings are usually dark brown or black-blue with a metallic shine, but they can also be reddish or have different color patterns.
The head has thick temples behind the eyes and a narrow neck.
The thorax has two prominent bumps on each side of the middle line.
The antennae are long and thin, with the third and fourth segments being about equal in length.
The Rhamnusium is found in Europe, especially in Central and Eastern Europe.
It feeds on the wood of willows and other trees2.
There are four species in this genus, of which three occur in Europe.
The most common one is the willow borer or bump-headed borer (Rhamnusium bicolor).