Running Spider (often Ghost Spider or Philodromid)

Scientific Name: Philodromus sp.

Order & Family: Araneae: Philodromidae

Size: 3mm to 10mm (body length)

Running Spider (often Ghost Spider or Philodromid)

Natural Habitat

Found on vegetation, tree bark, and frequently indoors on walls or ceilings, especially during seasonal changes.

Diet & Feeding

Strictly carnivorous; they hunt small insects like flies, gnats, and aphids using speed rather than webs.

Behavior Patterns

They are active hunters that do not build webs to catch prey. They are known for being extremely fast and agile, often lying flat against a surface to remain camouflaged before darting away.

Risks & Benefits

Beneficial to humans as they provide natural pest control for indoor insects. They are not medically significant; while they can bite if pinched or mishandled, their venom is harmless to humans.

Identified on: 2/13/2026