Provided is an insect trap which effectively attracts target pests to make it possible to improve the probability of capturing/exterminating the target pests and to increase the production amount of agricultural products. To this end, this insect trap 100 comprises: light sources 200 which radiate light for causing phototaxis in insects; a mortar-shaped reflection part 160 which is disposed vertically downward of the light sources 200, and which reflects the light emitted from the light sources 200 vertically upward; a cylindrical part 170 which is disposed vertically downward of the mortar-shaped reflection part 160, and which extends from the mortar-shaped reflection part 160; a fan 190 which generates an air flow that is sucked into the cylindrical part 170 from the mortar-shaped reflection part 160; and a capture net 310 which is disposed vertically downward of the fan 190, and which captures insects. The insect trap is characterized by: the light sources having a radiation wavelength with a maximum radiation peak near 560 nm or near 565 nm; and the mortar-shaped reflection part 160 having a coating film with a color similar to a hue within the range of 10YR-10Y in the Munsell color system.La présente invention concerne un piège à insectes qui attire efficacement des organismes nuisibles cibles pour permettre d'améliorer la probabilité de capture/d'extermination des organismes nuisibles cibles et d'augmenter la quantité de production de produits agricoles. À cet effet, le piège à insectes (100) selon l'invention comprend : des sources de lumière (200) qui émettent de la lumière pour provoquer une phototaxie chez les insectes ; une partie de réflexion en forme de mortier (160) qui est disposée verticalement vers le bas des sources de lumière (200), et qui réfléchit la lumière émise par les sources de lumière (200) verticalement vers le haut ; une partie cylindrique (170) qui est disposée verticalement vers le bas de la partie de réflexion en forme de mortier (160