* **Appearance:** These mites are extremely small, measuring about 0.75 millimeters (less than 1/30 of an inch). They have a bright red to reddish-brown body. Their most distinguishing feature is their front pair of legs, which are much longer than their other legs and extend forward, often mistaken for antennae. * **Habitat:** Clover mites feed on grasses, clover, and other lawn plants. When their populations swell, or when the weather changes, they migrate in large numbers onto building foundations, eventually finding their way indoors through cracks around windows and doors. * **Impact:** Clover mites do not bite humans or pets, and they do not cause structural damage. However, they can become a major nuisance. If they are crushed, they leave behind a stubborn red stain caused by their body pigment, which can ruin carpets, drapes, and furniture. ## Concrete Mites (Balaustium species) Often mistaken for clover mites, concrete mites are active during the warmer months of late spring and summer. * **Appearance:** Concrete mites are bright red and slightly larger than clover mites. They lack the exceptionally long front legs that characterize clover mites. * **Habitat:** These mites are typically found outdoors, crawling rapidly over sunny surfaces such as concrete patios, brick walls, driveways, and outdoor furniture. They feed primarily on pollen and other small insects. * **Impact:** Concrete mites are generally harmless. While they have been known to bite humans occasionally, causing mild, temporary irritation, they do not transmit diseases. Like clover mites, they will leave a red stain if crushed on outdoor cushions or clothing.
## Red Velvet Mites (Trombidiidae) Red velvet mites are easily distinguished by their relatively large size and distinct texture. * **Appearance:** These are among the largest mites you will encounter, sometimes reaching up to 5 millimeters in length. They have a bright, eye-catching red color and are covered in tiny, dense hairs that give them a plush, velvety appearance. * **Habitat:** You will typically find red velvet mites in soil, leaf litter, gardens, and forested areas. They are beneficial predators that feed on insect eggs and other small soil pests. * **Impact:** Red velvet mites are completely harmless to humans, pets, and plants. Because they help control pest populations in the garden, they should be left undisturbed. ## Chiggers (Trombiculidae)
While adult chiggers are harmless soil dwellers, their larval stage is a well-known pest in Indiana. * **Appearance:** Chigger larvae are nearly microscopic, measuring only about 0.15 to 0.3 millimeters. They are bright red or orange, but they are rarely seen individually without magnification. * **Habitat:** Chiggers thrive in damp, shaded areas with tall grass, weeds, and heavy vegetation. * **Impact:** The larval stage of the chigger is parasitic. When humans or animals walk through infested vegetation, the larvae attach to the skin. They inject digestive enzymes that break down skin cells, resulting in extremely itchy, red welts that can persist for days. ## Spider Mites (Tetranychidae) If the red pests are concentrated on your houseplants or garden crops, you are likely dealing with spider mites.
* **Appearance:** Spider mites are tiny (about 0.5 millimeters) and can vary in color from yellow-green to reddish-orange. * **Habitat:** They live on the undersides of plant leaves. A key sign of a spider mite infestation is the presence of fine, silk-like webbing on the plant's stems and foliage. * **Impact:** Spider mites are plant pests. They feed by sucking nutrients from plant cells, causing leaves to turn yellow, speckle, and drop. Heavy infestations can severely damage or kill plants. ## Quick Identification Guide To determine which mite you are looking at, observe its location and behavior: * **On indoor windowsills or walls:** Likely **clover mites**. * **On outdoor concrete, bricks, or patios:** Likely **concrete mites**. * **In garden soil, looking large and fuzzy:** Likely **red velvet mites**. * **On plants with fine webbing:** Likely **spider mites**. * **Itchy bites after being in tall grass:** Likely **chiggers**.
## Managing Red Mites in the Home If you find these mites in or around your home, use these strategies to manage them: * **Avoid crushing them:** Vacuum them up instead of swatting them to prevent red stains on walls and fabrics. Empty the vacuum canister or bag immediately into an outdoor trash bin. * **Create a physical barrier:** Maintain a clean border of gravel or mulch (about 18 to 24 inches wide) around your home's foundation to deter clover mites from crossing from the lawn to the house. * **Wash outdoor areas:** Spraying concrete patios and brick walls with a strong stream of water from a garden hose can temporarily disperse concrete mites.
