Spider IdentifierBlack spiders
Look for the body silhouette, relative leg length, visible spots or bands, web shape, and where the spider was found. A clear top view and a side view are more useful than a distant silhouette.
Black spidersField clues, explained
Spider identification guides
Search by the traits you can actually observe—color, pattern, body shape, web, behavior, and habitat. Each guide explains what a photo can support and where uncertainty remains.
Identify a spider from a photoStart with appearance
High-intent identification guides
Color alone cannot identify a spider. These guides turn a broad color search into a more useful comparison of markings, proportions, movement, web style, and location.
House spiders
Photograph the spider and its web before cleaning or moving anything. Record the room, web shape, body size, markings, movement, and broad geographic location.
House spidersBrown spiders
Check for leg banding, abdomen pattern, hair or spines, body proportions, web type, and geographic range. Do not rely on a violin-shaped mark alone.
Brown spidersBlack-and-white spiders
Map the pale pattern: top or underside, spots or continuous stripe, abdomen or legs. Then record body shape, movement, web type, approximate size, and broad location.
Black-and-white spidersBrown recluse look-alikes
A violin-shaped mark alone is not enough. Brown recluses have six eyes arranged in three pairs, uniformly colored legs without bands, a mostly uniform abdomen, and no conspicuous leg spines. Geographic range is essential evidence.
Brown recluse look-alikesBlack widow look-alikes
An adult female black widow often has a red or orange hourglass on the underside of a rounded abdomen, but the hourglass can be incomplete, faint or absent. Compare age-related patterning, body form, web, retreat, and broad location. Never turn over or handle the spider to inspect a marking.
Black widow look-alikesStill comparing possibilities?
Add up to three clear photos and an optional broad location. The result explains supporting and conflicting evidence instead of hiding uncertainty.