Daring Jumping Spider
( Phidippus audax )


2013-0426-01100121-ARA00465-Phidippus_audax[1129h07s,F,A,plant-flower]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Phidippus audax
(Hentz ,1845 )
Common Name:Daring Jumping Spider
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Family:Salticidae
Subfamily:Subfamily Dendryphantinae
Genus:Phidippus
Taxon Code:ARA00465
ITIS/TSN:886506

LOCATION DETAILS
Location Name
Oakland, Oakland, 7101 Edgewater Dr., Oakland
County:Alameda County
ECI Site#:CA01100121

RECOGNITION
Description
Recognition: Four morphs: 1) Typical: The majority of P. audax specimens are black with three white spots. Note the iridescent scales and flat (without gloss) black patches on the abdomen. These markings help distinguish audax from similar species such as P. regius. 2) Atypical: The adult P. audax with three orange or red spots are more unusual, especially from areas other than North FL. It is common for juveniles to have orange markings. Carapace bands are also uncommon. 3) Bryantae: I am not sure of what the bryantae form of P. audax looked like originally, but it is my understanding that it's very similiar to this specimen from TN. The white and orange specimens from north FL are probably the most highly evolved as far as pattern goes. There is little information concerning the color and pattern variations of P. audax throughout the United States. 4) Fused spots: This form is common in North Florida, but I do not know it's extent elsewhere. It is likely they occur in other states, but probably not so highly developed. The chelicerae are iridescent green.
Body Length
Males: 4-15 mm. Females: 4-18 mm.
Similar Taxa
While P. audax may include orange markings, banded legs will distinguish it from P. johnsoni.
Colors
Base color: black, Color1: black Color2: white Color3: sometimes orange

BIOLOGY
Habitat
The natural habitats of bold jumping spiders are are grasslands, prairies, and open woodlands. They also occur in agricultural habitat, especially old fields, and are frequently found in backyards and gardens.
Range
California and most of America north of Mexico.
Development
Bold jumpers mature in spring, mate in late spring or early summer, then females produce multiple egg sacs over the summer. A female may produce as many as 6 clutches of eggs, each containing 30-170 eggs. Average fecundity is about 200 eggs per female.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Species Phidippus audax - Bold Jumper. (http://bugguide.net/node/view/2006). Accessed March 12, 2016. .
ITIS.
Phidippus audax, Animal Diversity Web (http://animaldiversity.org/accounts/Phidippus_audax/)


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