These bugs are about a quarter of an inch in length, bean-shaped, and have a rust-brown or golden-brown carapace.Īfter they lay eggs, they’ll search for warm places to overwinter and consider your house a great place to hide away. They’re found across the entirety of the United States but are most prevalent in the Northeastern portions of the U.S. They can cause significant damage to lawns, gardens, and ornamental plants in large numbers. They lay their eggs in the fall, growing to larvae in the early spring (damaging grass root systems all the while), then emerge in early summer to feed on plant matter. The Asiatic garden beetle, or Maladera castanea, is originally from Japan and was first discovered in the U.S. Image Source: Canva Asiatic Garden Beetles As a result, these mites are often confused with bed bugs or fleas, often causing a scare to homeowners. These marks resemble blood but are, in reality, a mixture of pigment and body fluids. The problem arises when these pesky pests are crushed, leaving notable red splotches or streaks behind. Clover mites are considered a nuisance pest, as they don’t bite, carry diseases, damage home structures, or feed on carpets, clothing, or stored goods. While a problem in the garden, clover mites are also known to migrate indoors once the weather turns cold or if there is a massive influx of rain.Ĭlover mites typically have a minimal impact on lawns and gardens but can be a pain to deal with when they become unwanted house guests. They chow down on plant matter, creating thin, white cross-hatched lines across leaves and flowers. Clover mites, or by their scientific name Bryobia praetiosa Koch, are one of the most common garden-infesting pests. Out of the insects on this list, clover mites are easily the smallest, only measuring up to one-thirtieth of an inch in length. It can be hard to notice booklice in small numbers due to their minuscule size, but in swarms, they can appear as swaths of small, black-brown specs. These pests are extremely small, only measuring up to three-sixteenths of an inch, and have a brown or pale appearance. Booklice are often found congregating around bookshelves or areas prone to moisture, like windowsills. Some species of barklice, specifically Liposcelis spp., often find their way indoors, feeding on paper products, grains, houseplants, or molds. These insects are not actually lice instead, they’re psocids within the order Paraneoptera alongside thrips and Hemiptera (aphids and cicadas.) Unlike true lice, which are external parasites that use other creatures as a food source, psocids consume decaying plant matter and mold. Most insects require warm, moist environments to survive, and since your windows provide both, it’s only natural that bugs are drawn to them.īooklice, also known as barklice, or barkflies, is a pest famous for destroying books. Next is moisture when the warm air inside your home comes into contact with the cool glass of the windowpane, it creates condensation. As a result, many bugs will look for warmer surfaces (like window stools) to nest on while they sleep. Cold temperatures slow insects, making movement and activity difficult, especially during nighttime. As the sun shines through the window, it heats the window stool (the small wooden board below the sill). First, the space around your window is warm. Insects are attracted to windows because they provide several things needed to survive. Why Do Tiny Black Bugs Gather Around Windows? These bothersome bugs are unsightly and, depending on the species, pose a threat to your home or possessions. No matter how often you vacuum up these piles of dead bugs, they’re back cluttering up your windows in just a week or so. During these times, you might notice infestations of small, black insects gathering around your windowsills and doorframes. Pests are a common problem that plagues homeowners, especially in the summer and winter when invasive insects become more active.
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