Another natural predator is the mosquito fish. BUT...don't introduce any type of predator to your pond if it's connected to any other waterway-creek or stream flowing from it? You don't want to indtroduce a non-indegenous predator in your environment, right? Also, don't overfeed the fish. If they're not hungry, they're not eating your mosquitos and larvae.
Trim shrubs and plants from pond edge and keep leaves and debris clear from your pond.