Examples of insects with halteres are houseflies, mosquitoes, gnats, and craneflies. Other insects, like fungus gnats and scuttle flies, utilize fungi at their larval stage. Male citrus mealy bugs fly to the females and resemble fluffy gnats. The Snow Gnats are small flying insects that inhabit the Mortmain Mountains. The subspecies "israelensis" is commonly used for control of mosquitoes and of fungus gnats. Roots of cacti can be eaten by the larvae of sciarid flies and fungus gnats. The flowers have a distinctly sweet, fetid smell that attracts flies, gnats, and beetles. The Keroplatidae are a family of small flies known as fungus gnats. The Sciaridae are a family of flies, commonly known as dark-winged fungus gnats. Springtails and fungus gnats have also been suggested as pollinators. Adult non-biting gnats do not damage plants and are considered a nuisance. The clouds of biting gnats eventually drove the Indians away. There are two ways to prevent Snow Gnats from stinging people. "Hypoaspis" is currently used in greenhouses for control of fungus gnats. To control adult gnats in smaller areas, pressurized aerosol sprays with pyrethrins can be used.