Gertsch-1934

Guides

• Phidippus adumbratus

  California Red Jumping Spider

  Phidippus adumbratus is a jumping spider in the family Salticidae, commonly known as the California Red Jumping Spider. It belongs to the insignarius species group within the genus Phidippus. The species was first described by Gertsch in 1934 from a type specimen collected in Los Angeles. Its specific epithet derives from Latin adumbratus, meaning 'secret' or 'in the dark,' possibly alluding to the missing abdomen of the holotype specimen.

  Salticidaejumping-spiderPhidippusinsignarius-groupCalifornia-endemicchaparralCalifornia-Floristic-ProvinceGertsch-1934Baja-Californiaarachnidpredator

• Philodromus lutulentus

  Philodromus lutulentus is a running crab spider in the family Philodromidae, described by Gertsch in 1934. As a member of the genus Philodromus, it shares the characteristic laterigrade leg orientation that distinguishes this group from other crab spiders. The species epithet 'lutulentus' refers to something muddy or turbid, possibly alluding to coloration or habitat associations. Like other philodromids, it is an active hunter that does not build webs to capture prey.

  PhilodromusPhilodromidaeAraneaerunning-crab-spiderspiderarachnidGertsch-1934United-States

• Philodromus peninsulanus

  Philodromus peninsulanus is a running crab spider species in the family Philodromidae, first described by Gertsch in 1934. It belongs to a genus of active hunting spiders that do not build webs to capture prey. The species occurs in North America, with records from the United States and Canada.

  spiderPhilodromidaerunning-crab-spiderNorth-AmericaGertsch-1934