expanded aluminum wire cage having different hole intervals on each layer and the hole intervals of which are selected according to the target insect size. Inner, middle and outer cages allow the light supplied from the illuminant (12) to be seen owing to their perforated surfaces, and when the insects come to the light, they kill or stun them by the electrical current and they are collected in the collection tank (22) through the cone (21). The inner cage (13a) of the catcher device (1) is in the innermost potion and is preferably manufactured with expanded aluminum wire cage having a 2x4 mm hole interval. The middle cage (13b) is in the form to surround the inner cage (13a) and is preferably manufactured with expanded aluminum wire cage having a 3x6 mm hole interval. The outer cage (13c) is in the form to surround the middle cage (13b) and is preferably manufactured with expanded aluminum wire cage having a 8x16 mm or larger hole interval according to size of the insects. The outermost protective cage (13d) is preferably manufactured from plastic material with large hole intervals in order to prevent the human hand from contacting to the electrical cages such that it is distant from the electrical cages and that it covers the outermost circumference of the device. The measures of the protective cage (13d) has a size so as not to let hands to pass and has a diameter to easily grip the catcher device (1) and is designed to have large hole intervals so that flies or insects can pass through freely. The electric conducting cages among the three-layered expanded aluminum wire cages forming the cage system (13) are placed in the channels located in the ducted cage housing (14a) part of the upper cover of cage (11) and the bottom cover of cage (14), and they constitute the cylinder cage rigidly without contacting each other. The upper cover of cage (11) is fixed to hat cover (3) by means of the locking latch. The upper cover of cage (1 1) and the bottom cover of cage (14) are preferably made of plastic material. The negative (-) pole of the electric energy transmitted through the electrical voltage circuit (4) is transmitted to the terminal (10) through the terminal housing (9) via the connection cable (8) and then to the inner cage (13a) and to the outer cage (13c). The positive (+) pole of the electric energy transmitted through the electrical voltage circuit (4) is transmitted to the terminal (10) through the terminal housing (9) via the connection cable (8) and then to the middle cage (13b). The protective cage (13d) does not comprise electric current. The protective cage (13d) is different from the other cages in terms of its assembly form, which surrounds the outermost body of the catcher device (1), bears the cone in the versions using the cone