The ornamental design for a mosquitokillinglamp, as shown and described.
FIG. 1 is a front perspective view of a mosquito killing lamp showing my new design;
FIG. 2 is a bottom perspective view seen from a bottom side thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines immediately adjacent to claim as shown in the drawings represent the boundaries of the claimed design and form no part thereof. The broken line showing of portions of the mosquito killing lamp are included for the purpose of illustrating only and form no part of the claimed design.