Extension > Garden > Diagnose a problem > What insect is this? > General/curiosity insects > Insect relatives 1 inch and larger > Fishing spider
Fishing spider
Dolomedes tenebrosus
Jeff Hahn, University of Minnesota Extension
Jeff Hahn, University of Minnesota Extension
Description: 1 1/4 inches long; including the legs up to 3 1/2 inches long. Varying shades of brown. Markings on the abdomen are variable but three chevron markings are usually visible. Legs are banded.
Where/When: Associated with water, such as ponds, swamps, and slow-moving streams. However, can also be found a distance away from water sources. Active spring and summer.
Significance: Beneficial as a predator on insects and occasionally small vertebrate animals, like tadpoles and small fish. Despite size, does not harm people.
More information on Fishing spiders