Spider Identifier
Identify

Patterned spider guide

How to identify a black and white spider

White spots, bands, or stripes occur in many spider groups. Pattern placement helps, but body form and behavior often tell you whether to compare a jumping spider, orb weaver, or another hunter.

Identify my spider photo Safety and accuracy

Quick answer

Start with several clues

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.

Color alone cannot identify a spider. A photo-based result is educational, may be wrong, and is not a guarantee that a spider is safe.

Identification clues to record

Pattern placement

Capture whether pale marks sit on the abdomen, front body, legs, underside, or several areas.

Body profile

A compact, high-fronted shape suggests different comparisons from a large rounded abdomen or a flattened running form.

Behavior

Short jumps, stalking, hanging in an orb, or waiting in a retreat are useful clues that a still photo can miss.

Light and focus

Avoid flash glare on dark bodies and make sure real pale markings are not reflections or blown highlights.

Spotted and striped hunters

Penn State Extension’s emerald jumper guide illustrates why pattern and color must be combined with structure: jumping spiders have a compact hunting build and can vary in appearance. Many are seen moving on walls, plants, or other surfaces rather than sitting in a prey-catching web.

Other black-and-white spiders build webs, so include a wide photo of the web and its support. An orb between plants conveys very different evidence from a small silk retreat beside a window frame.

Make the pattern readable

Use diffuse daylight or a lamp from the side. A sharp crop can help, but keep the original wider image so size and habitat are not lost.

  • Submit both the full spider and a closer crop when possible.
  • Describe whether it jumped, ran, hung in a web, or stayed still.
  • Add city-level or broader location; never publish an exact home coordinate.

Sources and further reading