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Genus Dolomedes - Fishing Spiders

Not Only Leopards Have Spots - Dolomedes tenebrosus - female Camoflage Spider - Dolomedes albineus Dolomedes tenebrosus? - Dolomedes tenebrosus Nursery Web Spiders - Dolomedes scriptus Id help needed - wolf spider ? - Dolomedes scriptus Dolomedes tenebrosus - Dolomedes Dolomedes vittatus Fishing Spider - Dolomedes tenebrosus - female
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)
8 species in BugGuide's range.
Arrangement of eyes, apparently typical of family:

The transverse suture of the lorum is distinct and v-notched in genus. This feature sets it apart from the other two genera of this family.

Overview of the typical patterns & coloring of Dolomedes species:

D. albineus - seems to be extra hairy, look for the white band along the 'face', may also have a white carapace.

D. gertschi - need more info.

D. okefinokensis - the adult females are the largest of the genus, need more info.

D. scriptus - look for White 'W' mark

D. striatus - looks somewhat similar to P. brevipes, need more info

D. tenebrosus - this species is the one found most often away from water.

D. triton - Pretty distinct spots on abdomen and carapace pattern is distinct.

D. vittatus - Look for the very dark mark on the carapace.
Widespread primarily in the east.
Also restricted locally in the west.

Exact distribution within these countries will be added when time permits.

Ranges from Carico, 1973(1)
albineus - Southeastern US
gertschi - AZ, NM
okefinokensis - FL, GA
scriptus - Across most of the eastern US & southeastern Canada.
striatus - Northeastern US & southeastern Canada
tenebrosus - Across most of the eastern US & southeastern Canada.
triton - Widespread in the east, but also in the west & all of Canada & southern Alaska.
vittatus - Across most of the eastern US & southeastern Canada.
Aquatic and moderately moist forest habitats.
Mostly aquatic insects. They have also been known to occasionally catch small fish, hence the common name "Fishing Spider".
Print References
Spiders of North America: an identification manual, by Ubick et al.(2)
Works Cited
1.The Neartic Species of the Genus Dolomedes (Araneae: Pisauridae)
James Edwin Carico. 1973. Bulletin of the Museum of Comparative Zoology, Harvard University, Vol. 144, No. 7 Cambridge, Mass., March 13.
2.Spiders of North America: An Identification Manual
D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds). 2005. American Arachnological Society.