The ornamental design for a plug in insecttrap, substantially as shown and described.
FIG. 1 is a top, rear side isometric view of a plug in insect trap according to the present invention with a light bulb installed within the trap;
FIG. 2 is a rear elevation view of the plug in insect trap of FIG. 1;
FIG. 3 is a front elevation view of the plug in insect trap of FIG. 1;
FIG. 4 is a left side elevation view of the plug in insect trap of FIG. 1;
FIG. 5 is a right side elevation view of the plug in insect trap of FIG. 1;
FIG. 6 is a top plan view of the plug in insect trap of FIG. 1; and,
FIG. 7 is a bottom plan view of the plug in insect trap of FIG. 1.
The broken lines are for illustrative purposes and represent environmental structure and unclaimed portions of the invention and therefore form no part of the claimed design.