These fast-moving spiders are agile enough to outrun predators as well as human hands trying to collect them. Their camouflage coloration makes it difficult to spot them in nature when they aren't moving.
Running Crab Spiders have a front pair of legs that look longer than the back legs, but they really aren't. They are close relatives to members of the Crab spider family so it may be easy to mistake them. The way they hold and use their front legs is similar to true Crab Spiders.
Running Crab Spiders do not spin silk webs to catch insects. They chase them down, bite them to inject their venom and consume them when they like.
Common name: Running Crab Spider
Scientific Name: Philodromus spp.
Adult Size (Length): 2mm to 11mm (0.08in to 0.43in) COMPARE
Identifying Colors: brown; black; tan; red
General Description: spiny, spots, crab-like, biting, venomous, hairy
North American Reach (Though Not Limited To*): Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming; Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec; Saskatchewan; Mexico
* Keep in mind that insect reach is not governed by lines on a map and therefore may appear in areas/regions/states beyond those listed above.