Western Lynx Spider
( Oxyopes scalaris )


2006-0513-01100146-ARA00582-Oxyopes_scalaris[1148h37s,F,A,plant-hemlock-leaf]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Oxyopes scalaris
(Hentz ,1845 )
Common Name:Western Lynx Spider
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Family:Oxyopidae
Genus:Oxyopes
Taxon Code:ARA00582
ITIS/TSN:885523

LOCATION DETAILS
Location Name
Dimond Park, Dimond Park, 3860 Hanly Rd, Oakland
County:Alameda County
ECI Site#:CA01100146

RECOGNITION
Recognition
These may have a thick brown line on the ventral surface of the femurs, but this is not to be confused with the 'distinct black line'.
Description
Legs: Long and strongly spiked. These may have a thick brown line on the ventral surface of the femurs, but this is not to be confused with the distinct black line. Eyes: In a 2-4-2 arrangement. Unlike many spiders, sexes of this spider are similar in markings and size. In the Bay Area, the spiders are dorsally brownish with variable brownish markings. The face has a medial white stripe which extends to the back of the carapace. Abdomen: Ovular or triangular, ending with a posterior point.
Body Length
Male: 8-12 mm. Female: 8-13 mm.
Similar Taxa
Salticids can be separated based on the eye configuration: the enlarged eyes in Salticidae are the anterior median eyes, while in the Oxyopidae the posterior medial eyes are enlarged, resulting in two eyes occurring ventral to the enlarged eyes.

BIOLOGY
While hunting the spider is known to jump up to 2 cm into the air to catch prey. Its its excellent vision allows it to hunt at any time of the day, or in the night when it is also active.
Food
Other spiders, and insects.
Habitat
Prefers grass and shrub habitats. The spider does not create a web structure, but lives atop plants and trees, especially on flowers, ambushing insects and, most notably, other spiders. This spider lives atop flowers, plants and trees. Many are active both day and night. Their vision is acute, they use spiked legs to catch and hold prey and they may jump 2 cm into the air to catch prey
Range
This spider occurs across the U.S. and south into Mexico, but is most concentrated in California.
Development
Some oxyopids may produce several egg sacs, while others only one. Lynx's are very protective of their egg sacs, guarding them avidly. Many will not eat while guarding eggs, and often die of starvation as a result. Detailed research has been performed on the maternal habits of the North American green lynx.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Species Oxyopes scalaris - Western Lynx Spider. (http://bugguide.net/node/view/15151). Accessed July 15, 2016. .
ITIS.
Guide to Common Spiders of Bakersfield, California, California State University, Bakersfield (http://www.csub.edu/~ckloock/SpiderGuide/Key.pdf)


.