The red rodilegno is an insect, of the order of lepidoptera, which belongs to the Cossidae family. The Cossus cossus has an average life span of about 3 years showing a vast reproduction during the summer period. The larvae have a length of about 80 millimeters and have a variable coloring between pink and purplish red, according to the stage of development of the insect. The larvae have eight pairs of legs and begin to dig tunnels 12 days after birth, where they will then spend the winter to resume normal development the following spring. When the larval stage ends, the insects come out of the canals that have dug themselves to make a cocoon, from which the butterflies will come out after 30 days. Adults have a gray-white color with streaks.rodilegno red "width =" 745 "height =" 559 "longdesc =" / fruit and vegetables / apple-and-pear-tree / rodilegno-rosso.asp ">
Damage of the red wood rod
The symptoms of the infestation are visual, so it would be advisable to carefully observe the plants, especially Pome fruit and Stone fruit. In the event of an advanced larval infestation it would be possible to observe holes and crumbles on the affected surface, a sign of the passage of insects. The damages that can be found in the plant are represented by vast deteriorations due to the lack of lymphatic circulation. If the plant is in a juvenile stage, in full development, the attack could cause the branches to break. The branches in addition to suffering damage at the lymphatic level, also see their structure weakened due to the tunnels dug inside them. The parts injured by the excavation of insects can be a way through which other pathogens could enter.