On the one hand, there are those who participate in the good growth of plants. The hanneton larva (below) is part of the latter category. Hanneton or cetoinethe hanneton (melolontha melolontha) is a beetle insect of the beetle family.
It is considered one of the most harmful insects in the garden, in the state of larva. It is creamy white color with a black spot at the end of the abdomen. Its head is darker than the rest of the body, the back is smooth and the abdomen has a finer look.
Tends to confuse the hanneton larvae with those of golden caetoin. It is important to distinguish between the two, because the cetoine larvae feed exclusively on dead organic matter. Regarding the herd’s larva, it can remain on the ground for 3 years in the garden and damage root vegetables, increasingly important in each spring.
In the first year, the female herdron lays her eggs a few centimeters in the soil. After 4 to 5 weeks, larvae begin to feed on roots. At the end of the beautiful days, the white worms sink further into the ground, about 50 cm and start to hibernate.
They wake up in the next spring, more voracious than the last time not depriving themselves of the roots. In the next spring, they begin to use the garden before they return to the ground one last time to 1 metre to hibernate and free themselves from the state of larva to turn into imago. The insect then flies, ready to reproduce and will now feed with the leaves of your ornamental garden.
Destroy the hanneton larvaTo detect the presence of the herds larvae, one must of course take care of its garden regularly. Plants that seem to show slowed growth or yellow can bear the signs of a larva attack. They can be left to the air free to make the animals that swept away, such as hedgehogs and several bird species.
On this point, the chickens make very good hunters of herds larvae. If you have moles in your garden, you will find them there an interest in completing the work. In spring, the mushroom is incorporated into the soil and acts on the larvae.
They are microscopic pests that feed on a good number of pest insects in the larvae state by introducing themselves inside to poison them. Once they are in the ground, the nematodes attack the enemy. Useless, on the other hand, to introduce them as a preventive measure, their action is only if there are larvae to attack.