Quick Answer
To identify a brown recluse, look for a violin-shaped mark on its body, a light brown to dark brown color, and a relatively small size, typically about 1/4 inch in body length.
Key Characteristics
The brown recluse spider (Loxosceles reclusa) is identified by its distinctive body shape and color. The violin-shaped mark on its back is a clear indicator of its identity, with the distinctive “neck” of the violin pointing towards the rear of the spider. This mark is usually dark brown and may be more pronounced on some individuals than others.
Size and Habitat
Brown recluse spiders are relatively small, with a body length of about 1/4 inch (6-8 mm). They typically inhabit dry, undisturbed areas such as attics, basements, and woodpiles. These spiders are nocturnal and tend to be more active at night, so they are less likely to be seen during the day.
Distinguishing from Other Spiders
To identify a brown recluse, it’s essential to distinguish it from other spiders that may share similar characteristics. For example, the hobo spider (Tegenaria agrestis) also has a violin-shaped mark on its back, but it is typically larger and has a more elongated body. The brown widow spider (Latrodectus geometricus) has a distinctive red or orange hourglass mark on its abdomen, which is not found on the brown recluse.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.