Description: Although other species of Philodromus may be larger, this species is a fairly small spider. Females are 2.7 to 4.5 millimetres long, males range from 2.5 to 3.5 millimetres. The cephalothorax and abdomen are light-coloured in the middle, and both are darker (light reddish) along the edges. The abdomen has a reddish stripe down the middle of its lighter central patch. Like many other true and running crab spiders, legs are held in a laterigrade position when at rest.
Habitat: Found in a variety of habitats, including forests and grasslands, on tree foliage, grasses and other herbaceous vegetation.
Range: Throughout North America (except south-eastern U.S.)
Seasonality: Adults can be found May to August
Trivia: These spiders are well camouflaged, but when they move, as their name suggests, they can move quickly. This helps them in their role of active hunters.