A bedbug trap having at least a first plane panel of fibrous material and a second panel of fibrous material, the first panel having a zone covered in an adhesive for fastening to the second panel, the second panel including a strip of adhesive on at least one face, which adhesive strip is of a width that is less than the width of the first panel, and the first panel including a zone that is covered in an adhesive that is located at a distance from and facing the adhesive strip, wherein the second panel is plane, and the first and second panels are made of respective first and second portions of a single initial plane panel of fibrous material that is previously coated in adhesive and then folded in half so that the first portion and the second portion face each other, the adhesive strip extending over the second portion of the initial panel, being prolonged over the first portion of the initial panel, the fastening zone between the first and second portions of the initial panel being implemented by adhesive spots placed on the initial panel and of thickness greater than the thickness of the prolonged adhesive strip, thereby forming channels.