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Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Insect Relatives - Less than 1/4 inch long > Yellow sac spiders

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Yellow sac spiders

Cheiracanthiumspp.

Yellow sac spiders

Jeff Hahn, University of Minnesota


Description: 1/5 - 2/5 inch long (not including the legs). Yellow to greenish abdomen, cephalothorax (first body section) is darker. The first pair of legs are long. Does not build webs but does construct tube-like silken retreats.

Where/When: Can be found in any room in home. Tube-like silken retreats are commonly constructed high on walls at ceilings. Present spring and summer, although can be found indoors all year.

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