Have you been seeing swarms of delicate, mosquito-like insects around your house? Happily, instead of being a terrible species of cold hardy bloodsuckers, these are fungus gnats. Fungus gnats are tiny flies whose larvae eat mushrooms. They often appear abundantly in the fall. If you can catch one without crushing it too much, spines on their knees offer assistance with identification. Curious? Naturalist Emily Stone will share what little is known about these autumn visitors.