Fungus gnat

7090.        I have a small grow tent with soil based plants and I think I may have an insect problem. Can you please help my identify them. I pressed on one and took a picture of it on my fingertip using a microscope attached to my cell phone. Can you help please. Ottawa, ON. Canada

Number 7090. This looks like a fungus gnat in the family Sciaridae. Their larvae (maggots) can cause injury to the underground parts of tender plants. They most frequently are found in very damp/wet soil having a high organic content. The best control is simply allowing the soil to dry out as much as practical between waterings.