An adhesive-type insect trap comprising: a main body having an adhesive sheet insertion hole; a light source mount disposed on the main body; and a cover detachably attached to the main body and having a through-hole formed in at least a portion thereof, characterized in that the main body further comprises a light source seat disposed to face the light source mount such that one side of a light source is mounted on the light source mount and the other side of the light source is mounted on the light source seat; wherein the light source seat comprises: a pressing member pressing the light source in a thickness direction of the light source; a securing member pressing the light source in a height direction of the light source; and a support plate supporting the pressing member and the securing member; wherein the light source comprises an end cap adjoining the light source seat, and the end cap comprises at least one planar surface and at least one curved surface (872a, 872b), wherein the securing member comprises a tongue portion adjoining the light source and a flat portion extending from the tongue portion and adjoining the support plate, and wherein the securing member adjoins the planar surface of the end cap and the pressing member adjoins the curved surface (872a, 872b) of the end cap. a main body having an adhesive sheet insertion hole; a light source mount disposed on the main body; and a cover detachably attached to the main body and having a through-hole formed in at least a portion thereof, characterized in that the main body further comprises a light source seat disposed to face the light source mount such that one side of a light source is mounted on the light source mount and the other side of the light source is mounted on the light source seat; wherein the light source seat comprises: a pressing member pressing the light source in a thickness direction of the light source; a securing member pressing the light source in a height direction of the light source; and a support plate supporting the pressing member and the securing member; wherein the light source comprises an end cap adjoining the light source seat, and the end cap comprises at least one planar surface and at least one curved surface (872a, 872b), wherein the securing member comprises a tongue portion adjoining the light source and a flat portion extending from the tongue portion and adjoining the support plate, and wherein the securing member adjoins the planar surface of the end cap and the pressing member adjoins the curved surface (872a, 872b) of the end cap. a pressing member pressing the light source in a thickness direction of the light source; a securing member pressing the light source in a height direction of the light source; and a support plate supporting the pressing member and the securing member; wherein the light source comprises an end cap adjoining the light source seat, and the end cap comprises at least one planar surface and at least one curved surface (872a, 872b), wherein the securing member comprises a tongue portion adjoining the light source and a flat portion extending from the tongue portion and adjoining the support plate, and wherein the securing member adjoins the planar surface of the end cap and the pressing member adjoins the curved surface (872a, 872b) of the end cap.