Home / Sicariidae Spiders / Arizona Brown Spider (Loxosceles arizonica)

Arizona Brown Spider (Loxosceles arizonica)

The Arizona brown spider is a member of the Sicariidae family. As its name suggests, it is found primarily in the state of Arizona.

Scientific Classification

Arizona Brown Spider

Physical Description and Identification

Adults

Size: 0.83 cm (0.33 in)

Color: They are yellowish to light brown in color.

Other Characteristic Features: There are brown or violet markings on their head, similar to that of a violin.

Loxosceles arizonica

Eggs

The sacs where the eggs are laid are yellow.

Spiderlings

After hatching, they leave their original web.

The Web

As they primarily hunt their prey, they generally do not construct elaborate webbing.

Is the Arizona Brown Spider Venomous

Like all other Sicariidae species, their venom has the capability of necrotizing tissue. However, they generally only bite if threatened or to hunt prey.

Arizona Brown Spider Pictures

Quick Facts

Lifespan 1-2 years
Distribution United States (Arizona, California, New Mexico, and Texas) and Mexico
Habitat Arid and semi-arid regions
Common Predators Wolf spiders and praying mantis
Diet Ants, especially carpenter ants

Did You Know

  • American arachnologist Willis John Gertsch and American zoologist Stanley B. Mulaik first described this spider in 1940.

Image Source: bugguide.net, inaturalist.org, bloximages.chicago2.vip.townnews.com

The Arizona brown spider is a member of the Sicariidae family. As its name suggests, it is found primarily in the state of Arizona.

Arizona Brown Spider

Physical Description and Identification

Adults

Size: 0.83 cm (0.33 in)

Color: They are yellowish to light brown in color.

Other Characteristic Features: There are brown or violet markings on their head, similar to that of a violin.

Loxosceles arizonica

Eggs

The sacs where the eggs are laid are yellow.

Spiderlings

After hatching, they leave their original web.

The Web

As they primarily hunt their prey, they generally do not construct elaborate webbing.

Is the Arizona Brown Spider Venomous

Like all other Sicariidae species, their venom has the capability of necrotizing tissue. However, they generally only bite if threatened or to hunt prey.

Arizona Brown Spider Pictures

Quick Facts

Lifespan 1-2 years
Distribution United States (Arizona, California, New Mexico, and Texas) and Mexico
Habitat Arid and semi-arid regions
Common Predators Wolf spiders and praying mantis
Diet Ants, especially carpenter ants

Did You Know

  • American arachnologist Willis John Gertsch and American zoologist Stanley B. Mulaik first described this spider in 1940.

Image Source: bugguide.net, inaturalist.org, bloximages.chicago2.vip.townnews.com