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

Yellow sac spider

Cheiracanthiumspp.

Jeff Hahn, University of Minnesota

Description: 1/5 to 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.

More information on Yellow sac spider