What's That Bug? does not endorse extermination

scary spider
Hello, I’ve been looking on the web for about an hour now trying to identify this spider that I found today in a wooded area in Maryland. It’s size(3 to 3 1/2 inches or so sprawled out) and menacing appearance scared me today when I turned over a board. Can you please identify this for me? When I tried to scare it off of the board ( I didn’t want to squash it), it released a white substance out of its rear at me.
Thanks for your help,
Sid

Hi Sid,
Your photograph of a Fishing Spider from the genus Dolomedes is pretty great. These awesome spiders are actually capable of walking on water and then diving below the surface where they can remain more than 30 minutes. Sometimes they even catch small fish, hence the common name. They are also called Nursery Web Spiders because of the maternal behavior the females exhibit. Though large, they are not dangerous to humans. Your species is most probably Dolomedes tenebrosus or Dark Dolomedes. It is one of the largest species.

What's That Bug? does not endorse extermination
Location: Maryland

2 Responses to Fishing Spider

  1. Devin McDonald says:

    100% D. Tenebrosus. Dark Fishing spider. We currently have 2 females, one is rather large, both carrying egg sacs. The large female we named Cali was rescued. She was trapped I’m another spider Web halfway up our house.

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