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Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Insect Relatives - 1/4 to 3/4 inch long > Common house spider

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Common house spider

Parasteatoda tepidariorum

Common house spider

Paula Sullivan


Description: 1/4 inch long (not including the legs). Brown and tan with a rounded, teardrop shaped abdomen. The abdomen has vague chevron markings on it. Builds tangled looking webs; typically hangs upside down in webs.

Where/When: Found in many protected sites in and around buildings. Most common during spring and summer but can be found indoors all year.

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