The oziorrinchi are insects belonging to the order of Coleoptera. They can cause serious damage to the foliage of camellias, rhododendrons, lauraceras, euonyms, lilacs, privets, citrus fruits and other leathery leaf plants. In fact, with their robust buccal chewing apparatus they erode the internal parts or the edge of the leaf lamina mainly of leathery consistency. To ascertain the presence of oziorrinchi visit your plants in the evening, equipped with a torch, when complete darkness has fallen. If the place is quiet enough you will also be able to hear the sound of their jaws in action, and by examining the leaves and stems very carefully you should soon spot them. They measure about 1 cm, brown or black. The larvae instead feed on the root systems.
The chemical intervention requires a considerable number of applications with very toxic products, therefore it is better to resort to other methods first: against adults, for those who feel it, it is possible to proceed to manual capture, making them fall into a jar, while against the larvae biological control can also be put in place to prevent proliferation. For this operation nematode worms are used, which are on the market and feed on larvae. They appear as a powder that must be dissolved in the water of a watering can and subsequently distributed as a normal watering at the feet of plants. The treatment should be repeated a second time after 1 month. A further effective remedy is the possibility of also applying adhesive tapes to the base of the trunk in order to prevent the ascent of the insects, remaining stuck to them.