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Species Dolomedes triton - Six-spotted Fishing Spider

Large Spider - Dolomedes triton Six-spotted Fishing Spider - Dolomedes triton Dolomedes triton Water Spider - Dolomedes triton Six Spotted Fishing Spider? - Dolomedes triton - female Dolomedes triton - Six-spotted Fishing Spider - Dolomedes triton Six-spotted Fishing Spider (Dolomedes triton)? - Dolomedes triton - female Tiny Lycosid ID request - Dolomedes triton
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Pisauridae (Nursery Web Spiders)
Genus Dolomedes (Fishing Spiders)
No Taxon (fimbriatus group)
Species triton (Six-spotted Fishing Spider)
Synonyms and other taxonomic changes
Explanation of Names
Dolomedes triton (Walckenaer, 1837)

Greek (τριτων): named after the minor sea god, son of Poseidon.

The common name "six-spotted fishing spider" comes from the 6 dark spots on the sternum, not the spots (usually 10) visible on the dorsal abdomen.
The abdomen has a series of small paired white and/or light blue spots. The sternum is marked with six large black spots.(1) However, those black spots sometimes blend together, as seen in the image below.

This species and D. striatus appear to have striped femurs. While all other species have banded femurs. ~ Lynette 10/15/11

For additional ID guidance, please see the genus page.
Thoughout the United States and southern Canada, although seldom encountered in the Rockies and Great Plains. (1)
See Also
D. triton is also often confused with pirate wolf spiders:
Print References
Carico, J. E., 1973. The Nearctic species of the genus Dolomedes (Araneae: Pisauridae). Bulletin Museum of Comparative Zoology Harvard 144: 435-488. (Species Description Here)
Walckenaer, C. A. (1837). Histoire naturelle des insectes. Aptères. Roret. (Original Description)
Internet References - Images and information.
Works Cited
1.How to Know the Spiders
B. J. Kaston. 1978. WCB/McGraw-Hill.