I would say the easy way is to put your object on the canvas.
Then use a Paint Stroke tool to draw the path you want the object to take.
Then add a Behavior Motion – Path to object you want to animate.
Under the Behaviors tab in inspector set the Path Shape to GEOMETRY.
Then Drag the Paint Stroke of the path to the Well that pops up under the motion path behavior (the big blank rectangle).
Then you might also want to add a Snap Alignment to Motion Behavior as well so the bug “turns” with the path.
Fiddle around with the parameters till you get somethign you like.
I just did a quick and easy animation on one of the Ants from motion to test it out and it seemed to work reasonably well for the little effort I put in.