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  • The brown recluse spider is a solitary creature that prefers shelters and small crevices
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  • Females are double the size of males. They don’t eat males unless no other food is available
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  • Wolf spider females carry their egg sacs with them. Spiderlings stay with their mother on her back
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    seek help
  • Camel spiders are not spiders. When approached it will make a hissing warning sound
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  • Tarantulas are nocturnal animals. They can grow very large and are often shown at exhibitions
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  • 4-5 times as many people are killed by horses than spider bites in the US
  • Brown widow spiders live at the east coast in the USA - they have a beautiful hourglass as coloration

About

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Redback Jumping Spider

By Anders Nielsen, Ph.d.

Redback jumping spiders (Phiddippus johnsoni) are common in California. It is one of the most often encountered jumping spiders in North America.

Many people believe that the redback jumping spider is particularly dangerous to humans due to its red back which is definitely not the case. The name Johnson Jumper has been suggested as an alternative, and as it a jumping spider, the name is probably less confusing.

Topic: Yellow Sac S.
Are spiders insects?

Habitat

Redback jumping spiders prefer to stay in their tubular, silky nests beneath debris, wood, or anywhere undisturbed on the ground. Since the redback jumping spider is a sight hunter, it stays in its nest during nights and when the conditions for seeing prey are poor.


Topic: Spider Bites
Camel Spider

Diet

They eat prey almost up to their own size. The average size of their prey is, however, about half their own size. They feed on a number of different invertebrates, such as caterpillars, moths, and flies. They also eat spiders, most in the form of the larger females eating males.

Topic: Venom
Brown Widow Spiders

Appearance

Jumping spiders are hairy and grow to approximately three quarters of an inch in length. The size of individual spiders shows great variability. The back of a Johnson spider is distinctly red, with a black strip if it is a female. The rest of the body is usually entirely black.

Topic: Spider Videos
Spider Webs

Bites

The bite from a redback jumping spider isn't fatal. The bite results in swelling and pain at the bite site. The pain and swelling usually lasts for several days. Some people experience other symptoms as well from a redback jumping spider bite. The spider belongs to the Salticidae family.

Topic: Worlds Biggest S.
Wolf Spiders

The jumping spider is not considered as dangerous as many other spiders since its venom is not as toxic as, for instance, the venom of black widows. Bacterial infections around the site of a wound should, however, be avoided at all costs.

Topic: Hobo Spider
Black Widow S.

Life Cycle

Before mating, the male walks toward the female, then backs away. He performs a kind of zigzag dance, and some males are reported to produce a sound by twitching their abdomens while dancing. Sometimes the male is killed after mating. This behavior is referred to as sexual cannibalism.

Topic: Arachnophobia
Brown Recluse S.

A Typical Sight Hunter

Phidippus johnsoni is a typical sight hunter—both when it comes to prey and mating.

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