Arc Lightning◆ (electricity, move, primal) The spark moth transforms into lightning that arcs to a large piece of metal within 100 feet, such as a suit of metal armor or metal weapon. The elemental then returns to its normal form in a space adjacent to the metal. This movement doesn't trigger reactions.
Source: Pathfinder Monster Core 2
Running this fight? Add the spark moth to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.
