Red spiders in the house are typically eight-legged arachnids belonging to the genus Nesticodes. These small, red-bodied creatures are usually found lurking in dark corners, in the crevices of door frames and windows, and under furniture. However, there are also other, less common, species of red spiders that live outdoors. For example, the slender red grass spider, the furry jumping red and black cardinal spider, and the sizable reddish-brown woodlouse spider are all kinds of red spiders.

Nobody wants to discover any type of house bugs crawling or flying around their home. Many tiny kinds of bugs in the house, like pillbugs, fruit flies, and silverfish, are harmless and are more of a nuisance. But some small black or brown bugs like mosquitos, ticks, bed bugs, drain flies, or common houseflies can sting, bite, or spread diseases. Additionally, tiny house bugs like beetles, weevils, and ants can infest pantries and kitchen cabinets in the home.

Tiny yellow bugs crawling on the leaves or stems of your houseplants can send you into a panic. The small mite-like creatures look like little bright-yellow pear-shaped bugs with black legs and two dark antennae. Unfortunately, these tiny yellowish and black bugs are more than a nuisance pest. These bugs are yellow aphids—a type of sap-sucking insect that kills houseplants, greenhouse plants, and outdoor ornamental plants.

Red beetles have a striking appearance due to their vibrant crimson red bodies or wing covers. Types of red beetles include the scarlet lily beetle, red pumpkin beetle, red soldier beetle, and the cocklebur weevil. Other types of red beetles include ladybugs which are flying red beetles in the order Coleoptera. Most types of beetles with red wing covers or bodies are found in grasslands, woodlands, and residential gardens.