Genital-plug
Guides
Philodromus cespitum
Turf Running Spider, Running Crab Spider
Philodromus cespitum is a small running crab spider in the family Philodromidae, widely distributed across the Holarctic region. It is the dominant spider species in Central European fruit orchards, where it functions as an important biological control agent. Males measure 3.5–5.0 mm, females approximately 5.3 mm. Body coloration is variable, typically in shades of brown or yellow with spotted patterns. The species exhibits distinctive reproductive biology including male courtship tapping behavior and the use of genital plugs during copulation.