An apparatus for controlling bark beetles consists of a having an array of inlet slots (2) provided housing (1), within which a use to manage these pests certain topside open circumference with at least one exhaust port (11) equipped for pests tube-like insert ( 9), wherein the exhaust port (11) is dimensioned such that pests can pass through it, however, beneficial organisms can not pass this, the deepest portion of the insert (9) through a sieve (20) is formed, which pests and beneficial equally retains wherein means for further treatment of the pests by a collecting container (7) is formed, which stands for the pests with the insert (9) over the outlet slot (11) in connection. While the pests can be collected in the collecting vessel (7) also leave the well in the housing (1) penetrated beneficials this in the opposite direction, namely via the said outlet ports (11) again, which is supportive of these slots incident daylight.
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