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Sac Spider


Actual Size: ¼ – ⅜”

Characteristics: Tan legs and head, yellow abdomen.

Legs: 8

Habitat: Lives outdoors in gardens and organic debris, but will access homes in fall to seek warmth. Builds webs where walls meet other walls or ceilings.


  • Earns its name by building small tubes or sac-like nests.
  • Often mistaken for the brown recluse, but lacks the fiddle on its back.
  • Although their bite can be painful, it is not medically significant except for allergic individuals.

Sac Spiders in The Salina

The sac spider is common in homes in Salina and is easily mistaken for the brown recluse because it is similar in shape, but the sac spider lacks the “fiddle” pattern of the brown recluse. Sometimes referred to as a “yellow sac spider”, these spiders are often pale yellow in color and have even been known to have a hint or tinge of green. Similar to most spiders, sac spiders prefer to stay away from human contact and typically only find their way indoors by accident. For the most part, sac spiders prefer to feed on a variety of types of spiders along with other garden insects.

Sac Spider Habitat

Outdoor sac spiders can be seen in gardens, under vegetation, bark, rolled leaves, and organic debris. Sac spiders are often shipped in agricultural products such as grapes and can make their way inside homes on produce. It is common to see sac spiders inside a home as they seek warmth from dropping fall temperatures outdoors. Sac spiders can easily climb slick surfaces and will construct silk retreats wherever walls meet other walls or ceilings.

Sac Spider Behaviors, Threats, or Dangers

Sac spiders are nocturnal hunting spiders. Their bite can be misdiagnosed as a brown recluse spider bite as similar injuries develop but are much less severe. It can be highly painful, but it is not medically significant except for allergic individuals. If you suspect that you have been bitten by a spider, seek medical attention if symptoms persist or intensify.

If you need help with sac spiders, contact your local spider exterminators.

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