I claim the ornamental design for an insect trap having two-piece outer casing, as shown and described.
FIG. 1 is a perspective view of an insect trap having a two-piece outer casing showing my new design;
FIG. 2 is a front view of the insect trap shown in FIG. 1;
FIG. 3 is a rear view of the insect trap shown in FIG. 1;
FIG. 4 is a right side view of the insect trap shown in FIG. 1;
FIG. 5 is a left side view of the insect trap shown in FIG. 1;
FIG. 6 is a top view of the insect trap shown in FIG. 1;
FIG. 7 is a bottom view of the insect trap shown in FIG. 1; and
FIG. 8 is an exploded view of the insect trap shown in FIG. 1; and,
FIG. 9 is another perspective view of the insect trap shown in FIG. 1 with environmental features shown in broken lines.
In these drawings, the solid lines illustrate the claimed ornamental design, whereas the broken lines illustrate unclaimed environmental features and form no part of the claimed design.