The ornamental design for a mothtrappingdevice, as shown and described.
FIG. 1 is a front perspective view of a moth trapping device showing the claimed new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a top plan view thereof; and
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is a perspective view of the moth trapping device in an environment in which it may be used.
The broken lines immediately adjacent to the claimed portions are boundaries, all other broken lines are environmental structures, and all the broken lines form no part of the claimed design.