The damage of the neck cutlet beetle is expanding!

The damage caused by the invasive alien species, the neck beetle, is expanding nationwide, and damage has also occurred in neighboring cities. To prevent the damage from spreading, we ask for your cooperation in prevention.
The neck beetle is a foreign insect that parasitizes rose trees such as cherry blossoms, plums, and peaches, and its larvae devour the insides of the trees.
As the damage progresses, the trees will die, which will have a serious impact on tourism and agriculture, and secondary damage from fallen trees is also expected.

The larvae feed on the inside of trees from April to October, spend two to three years excreting a large amount of minced frass (a mixture of larval droppings and wood waste), and become adults from May to August. Appears outside the trees.
Adults are about 2.5 to 4 centimeters long, glossy black and have a red chest (neck).

Frasses of this species have a lot of wood chips and a large amount, and it is characterized by the fact that they are often connected in a stick shape or a karin shape immediately after being discharged.
The frass is proportional to the body size of the larva, and various thicknesses can be seen from 1 mm to around 5 mm.

Tokyo Metropolitan Government Bureau of Environment website (Guidelines, etc.)

If you find it, please help us to exterminate it by stepping on it on the spot to prevent further damage.In addition, please provide information to the Environmental Conservation Section of the Living Environment Division or the Environmental Policy Section of the Environment Division.
As of January 15, 2018, the neck beetle was designated as an alien species, so it is prohibited to keep it or carry it alive.