Bold Jumping Spider, Daring Jumping Spider
Phidippus audax
Salticidae (Jumping Spiders), Order Araneae. Characterized by excellent vision and hydraulic-powered jumping ability.
Physical Description
A robust, hairy spider with a rectangular cephalothorax and an ovoid abdomen. Known for a stocky build and large, forward-facing eyes that give it a cat-like appearance.
Size Estimate
Estimated body length 8-15mm. Adult specimens typically reach 13-19mm for females, with males being slightly smaller.
Coloration & Markings
Predominantly black with white or orange spots on the abdomen and white stripes on the cephalothorax. Unique metallic green or blue chelicerae (mouthparts) are a diagnostic feature.
Web Type
They do not build capture webs. Instead, they build silken 'retreats' or pupentacular sacs for molting, sleeping, and egg-laying.
Eye Arrangement
Four pairs of eyes with the Anterior Median Eyes (AME) being greatly enlarged and forward-facing, providing high-resolution binocular vision and depth perception.
Leg Characteristics
Hairy, thick, and powerful legs. The first pair is typically the longest and stockiest, used for grabbing prey and during mating displays.
Venom & Safety Information
Venom Information
Neurotoxic but optimized for small insects. It is not considered dangerous to humans and is generally weaker than a bee sting.
Medical Significance
Low medical significance. Bites are rare and usually only occur if the spider is pinched. Symptoms include localized redness, slight swelling, and mild pain.
Safety Recommendations
If found indoors, they can be safely relocated using the cup-and-paper method. They are harmless neighbors and are best left alone to provide free pest control.
Habitat & Behavior
Habitat & Range
Common across North America from Canada to Mexico. Found in grasslands, gardens, exterior walls of houses, and open woodlands.
Behavior & Temperament
Active diurnal hunter with curious and intelligent behavior. They track prey from a distance and pounce. Generally non-aggressive and will retreat when threatened.
Diet & Prey
Generalist carnivore eating flies, moths, beetles, and other spiders. They use their keen eyesight to stalk and leap on prey from several times their body length.
Seasonal Activity
Most active from late spring through fall. Peak sightings occur in mid-summer during the mating season.
Description
The Bold Jumping Spider is one of the most charismatic arachnids in North America. Known for its 'intelligence' and curious nature, it often watches humans with its large central eyes. Its fuzzy appearance and often colorful mouthparts make it a favorite among macro photographers and nature enthusiasts.
Key Features
Large forward-facing eyes, metallic green chelicerae, and the characteristic white or orange spot in the center of the abdomen.
Similar Species
Phidippus regius (Regal Jumping Spider) which is found in the SE USA and has different marking patterns on the female; and other Phidippus species.
Life Cycle
Females lay egg sacs in silken retreats during early summer. Spiderlings emerge and often disperse via ballooning. They can live up to 1-2 years in the wild.
Ecological Importance
Significant natural pest control, consuming high volumes of agricultural and household pests like mosquitoes, flies, and crop-destroying beetles.
Conservation Status
Not evaluated by the IUCN, but populations appear stable and widespread throughout their native range.
Interesting Facts
They use hydraulic pressure to jump up to 50 times their body length and always anchor themselves with a silk 'safety line' before leaping.
Photography Tips
Focus specifically on the large central eyes to create a 'portrait.' Use a flash to highlight the metallic sheen of the green chelicerae.
Identified: 2026-05-26T16:15:19.543828