By plates (31, 32) having different colors, an edge is formed in the vertical direction along the boundary between the plates (31, 32). Further, as materials of the plates (31, 32), a material which primarily transmits ultraviolet light having a wavelength of about 370 nm and a material which primarily transmits green light having a wavelength of about 520 nm are used. This constitution makes an attraction device (10) capable of attracting insect pests more efficiently as compared to a case where a light source such as a mercury lamp which emits a large amount of light having a wavelength of 300 to 600 nm or an LED which emits a large amount of light having a relatively short wavelength is used.
