The ornamental design for an insecttrap, as shown and described.
FIG. 1 is a diagrammatic perspective view of the insect trap.
FIG. 2 is a top plan view thereof.
FIG. 3 is a bottom plan view thereof; and,
FIG. 4 is a front elevational view of the insect trap, the rear elevational
view, left side elevational view and right side elevational view being
mirror images of the front view.