The Balanin is an insect that attacks the hazelnuts present on the tree by dropping them early. The presence of this insect is easy to see as it leaves a small hole in the skin of the fruit. But getting rid of it is another story! Hazel tree owners know all too well how difficult it is to defeat this pest. Learn how to recognize and deal with a Balanin attack.
How do you recognize hazelnut balanin?
This insect is part of the beetle family. As an adult he can be recognized by his small round eyes and his long trunk. It has two antennae on its head and is usually brownish yellow in color. It measures about an inch and has lighter colored spots on its body.
In larval state the Balanine measures about one and a half centimeters and, like most larvae, is creamy white in color with a brown head. Egg laying takes place in the month of May and lasts until July. Adult males mate with females in the spring. Thanks to her trunk, the female pierces the barely formed hazelnuts by making a hole of about 10 mm to lay an egg. She will repeat the process about thirty times.
Once the egg hatches, the larva will grow and evolve inside the hazelnut for one to two months, feeding on the latter’s flesh. With the onset of autumn, the larva pierces the shell and falls to the ground. She then digs a burrow of about six centimeters and stays there for one to three years.
Symptoms: Recognizing the presence of Balanine
In general, it is already too late when the presence of Balanine is detected. In Indeed, its presence is only noticed by observing the hazelnut and the presence of the small hole. The Balanin has already eaten the fruit. The adult also eats the leaves and fruits of pear and peach trees, leading to their deformation.