Bug Identifier
Red-backed Jumping Spider
Community identification

Red-backed Jumping Spider

Phidippus johnsoni

Order & Family
Araneae, Salticidae
Size
Typically 9 to 14 millimeters in length.
See this bug in the Encyclopedia

Natural Habitat

Found in dry shrublands, coastal dunes, forests, and often around human structures like fences and window sills.

Diet & Feeding

Carnivorous; hunts flies, moths, beetles, and sometimes other spiders using keen eyesight and agility.

Behavior Patterns

Diurnal active hunters that do not spin webs to catch prey. They use silk for safety lines and nesting sacs. Known for complex courtship dances and visual signaling.

Risks & Benefits

Benefits include pest control in gardens and homes. While they are venomous and can bite if handled roughly, their bite is generally not considered medically significant to humans, resembling a bee sting.