bold jumper

(Phidippus audax)

               
Conservation Status

IUCN Red List

not yet assessed

bold jumper

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Extremely common and widespread

Season

Spring to fall

Habitat/Host

Old fields, prairies, open woodlands, backyards, gardens, and human houses

Size

Female Body Length: to ¾

Male Body Length: to

Photo by Terry Hayes

Identification

This is an extremely common jumping spider in eastern United States. It is a medium-sized spider but a very large jumping spider. It is highly variable in appearance.

The female body is to ¾ long, not including the legs. The male smaller than the female, to long. The front body part of the body (cephalothorax) and abdomen are black with white spots and are covered with short white hairs giving them a fuzzy appearance. The male is more contrastingly marked than the female.

The cephalothorax is massive, high, and longer than wide. Its sides are rounded.

The abdomen is widest in the middle and tapered to the end (posterior). It has 4 pairs of white spots and 4 pairs of squarish matte black spots. The first (anterior) pair of white spots is sometimes absent or inconspicuous. The second pair is usually, but not always, fused into a large central spot. The third pair are elongated, appearing as short stripes. The fourth (posterior) pair are much smaller and sometimes inconspicuous. The black spots are covered with short black hairs, the white spots with white hairs. On juveniles the light spots are often orangish-red.

There are four pairs of eyes arranged in three rows. The first row of of four eyes is recurved. The middle pair of these is by far the largest of all of the eyes. The second row of two eyes is closer to the first row than it is to the third. The second and third rows form a square. The jaws (chelicerae) are small. The basal parts of the chelicerae are iridescent green or blue.

The legs are short. On the male they are boldly striped white and black. On the female they are faintly striped.

 
Similar
Species

Regal jumper (Phidippus regius) lacks matte black spots on the abdomen. It occurs in southeastern United States, not in Minnesota.


Food

Insects, spiders, and possibly other small invertebrates and vertebrates

 
Life Cycle

Mating takes place in late spring or early summer. When courting, a male will wave its forelegs and palps, showing off his colorful chelicerae. After mating the female produces up to 6 sacs of 30 to 170 eggs each during the summer. She lays these egg sacs under the bark of logs, creates a silk shelter to protect the hatchlings, and stands guard until the hatchlings disperse. Juveniles overwinter in a silk cocoon under bark or some other protected space. Adults mature in the spring.

 
Behavior

They hunt during the day by sneaking up and pouncing on their prey. They release silk while jumping as a drag line to prevent falling. They do not hunt at night.

They will bite if molested but are usually too quick and wary to be caught. They can jump 10 to 50 times their body length.


Distribution Distribution Map   Sources: 24, 29.

Comments

distinguished by

large size

 


Taxonomy

Order:

Araneae (spiders)

 

Suborder:

Araneomorphae

 

No Rank:

Entelegynae (eight-eyed spiders)

 

No Rank:

RTA clade

 

No Rank:

Dionycha

 

Family:

Salticidae (jumping spiders)

 

no rank:

Salticoida

 

no rank:

Marpissoida

 

Subfamily:

Dendryphantinae

 
Synonyms

 

 
Common
Names

bold jumper

bold jumping spider

daring jumping spider

white-spotted jumping spider


 

 

 

 

 

Glossary

cephalothorax

The front part of a spider’s body, composed of the head region and the thoracic area fused together. Eyes, legs, and antennae are attached to this part.

 

chelicerae

The pair of stout mouthparts, corresponding to jaws, in arachnids and other arthropods in the subphylum Chelicerata.

 

palp

Short for pedipalp. A segmented, finger-like process of an arthropod; one is attached to each maxilla and two are attached to the labium. They function as sense organs in spiders and weapons in scorpions.

 

 

       

Visitor Photos

   
Share your photo of this arachnid.

Terry Hayes


… here's a beautiful jumping spider I saw last summer in my yard in Montrose MN.

  bold jumper   bold jumper
       
  bold jumper    

       
       

MinnesotaSeasons.com Photos

   
       
       

 

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Slideshows

   
  Bold Jumper (Phidippus audax)
Bill Keim
 
  Bold Jumper (Phidippus audax)  
     
  Phidippus audax (Bold Jumper)
Allen Chartier
 
  Phidippus audax (Bold Jumper)  

 

slideshow

     

Visitor Videos

   
Share your video of this arachnid.

     
     

Other Videos

 
  Phidippus audax jumping spider 4K
lucasberg
 
   
 
About

Published on May 28, 2014

phidippus audax jumping spider shot in 4K on a Sony FDR-A100.

Music is from the youtube creators library.

 
     
  Macro Video of an Adult Female Phidippus Audax Jumping Spider
Thomas Shahan
 
   
 
About

Uploaded on Nov 15, 2009

Found on a fence at a friend's ranch last June.

This is about as large as jumping spiders get (~15mm or so body length) but adult females vary in size and some Phidippus species can easily exceed 20mm body length.

Music is a cover of The Ronettes' 1963 hit, "Be My Baby" written by Phil Spector.

For more spider photography and videos, head on over to www.ThomasShahan.com

 
     
  Adult Male Phidippus audax Jumping Spider
Thomas Shahan
 
   
 
About

Uploaded on May 30, 2009

A pretty good sized adult male found in a dumpster.

 
     
  Macro Video of an Adult Female Phidippus audax Jumping Spider
Thomas Shahan
 
   
 
About

Uploaded on Jan 18, 2009

A macro video of a very large (15mm or so) adult female Phidippus audax jumping spider I found in a light fixture. Set to a recording I did back in December with a vintage Japanese Alvarez classical acoustic and a Kay Swingmaster hollowbody electric.

For my jumping spider and insect photos, go here:
http://www.flickr.com/photos/7539598@N04/

 
     
  Jumping Spiders Mating-Phidippus Audax
Torn80cj
 
   
 
About

Published on May 18, 2012

Two phidippus audax jumping spiders mate. The spider at the very end with the red spots is a very young phidippus audax, pretty much still a baby.

 
     

 

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Visitor Sightings

   
Share your sighting of this arachnid.

Terry Hayes
8/31/2015

Location: Montrose MN

… here's a beautiful jumping spider I saw last summer in my yard in Montrose MN.

I think it's a male due its smaller size (about 1/4") and the slight clubs on the palps.  The bright sun highlighted the gold on him.

bold jumper


     
     
 

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