Residents in Brevard County flooded 911 operators Thursday with reports of strange thread-like objects falling from the sky, Local 6 News reported. Donald Forbes Reports Thousands of the strands could be seen floating around the Palm Bay, Fla., Police Department and other buildings in the area. After an investigation, the substance was identified as Psocids' webs. Psocids are tiny insects less that 1 inch long that are commonly called barklice or webspinners. They are almost invisible to the naked eye, and fairly common in Florida. Psocids usually prefer warm, damp, undisturbed conditions, and feed mainly on microscopic molds. They are commonly found in old magazines and books, where they also feed on binding glue. Nearly 150 species of psocids are found in the United States.