The ornamental design for a electronicmouse having an illuminated region, as shown and described.
FIG. 1 is a bottom rear perspective view of an electronic mouse having an illuminated region showing our new design;
FIG. 2 is a bottom view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a back view thereof;
FIG. 7 is a front perspective view thereof; and,
FIG. 8 is a top view thereof.
The broken line showing of various regions of the electronic mouse and the unshaded areas there within is for the purpose of illustrating unclaimed portions and form no part of the claimed design. The radiating lines emanating from the bottom horseshoe region in the FIGURES indicate illumination.