Despite its diminutive size, the Kamitetep can cause bruising and irritation on the skin. They may appear strange, but you’ve most likely noticed these microscopic caterpillars clinging to walls and furniture in your home.
Some individuals are unaware that it is a species of caterpillar that can cause bumps, bruising, and itching on the human body. The cocoon, species ‘phereoca uterella’, can cause bruising with its bite, which leaves a “hair” the size of a needle.

According to Wikipedia, Phereoeca uterella is a moth species also known as the plaster bagworm or home casebearer. It can be found in warm, humid areas in the United States. It is widespread in households.
The effects of the bruising could endure for weeks. Typically, these caterpillars leave hairs where they sting or bite the human skin. It is that hair that will cause bruising, swelling, intense discomfort, and itching. The itching caused by these caterpillars can be relieved by applying anti-itch cream or ointment.
The larvae dwell in flattened shells, while the outside cocoon facilitates metamorphosis into its final stages. Additionally, the cocoon is made up of silk strands mixed with sand, dust, and even soil. The cocoon usually has an exit from the front, back, or both directions to allow larvae to travel in and out.

Even yet, the larvae only come out halfway and will not emerge entirely until they are looking for food. According to the sources, this larval, a moth measuring around 13 millimeters long, will lay 200 eggs in a single cycle. The eggs that hatch will develop into such cocoons and live in a secret location in the house. These larvae also enjoy eating cloth and frequently attach themselves to spider webs, where they consume little spiders.
Because these critters like warm temperatures and adhere to walls within the home, keep an eye out for concealed areas indoors on a frequent basis, particularly in the warmest regions of the house!