Dolomedes tenebrosus
(Dark Fishing Spider)

Picture ID 175765

Picture of Dolomedes tenebrosus (Dark Fishing Spider)

Comments & ID Thoughts

I have never! I was thinking a type of wolf spider? But in 42 years I've never seen markings or size like this! Central mississippi. Found in hvac intake shaft.

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TangledWeb

She’s Dolomedes tenebrosus, a Dark Fishing Spider. She’s a beauty with lots of orange in her markings. She had a egg sack. Her abdomen is small and her posterior is angled in a way that happens after female spiders release their eggs. In other words, her egg sac is missing an the hatchlings may emerge somewhere in the HVAC system. They have eyes that refract light ( eyeshine) like deer eyes. A bright spot light or flashlight in the dark may show little blue dots of light. It’s up to you if you want to try to rescue them. A… Read more »

greenvilleeee

True! Dolomedes tenebrosus. And thank you for further info, respectably in regards to the blue refraction.

TangledWeb

I didn’t see those big hairs before! I broke out my huge 425 page , “Spiders of North America – an identification manual.” My parents did not enjoy buying it for me as birthday gift. Lots of black and white line drawings of spider genitals. The hooks on the legs are “macrosetae.” There are 3 per leg. I don’t know what they are for. The hairs on a Fishing Spider, in general create air bubbles on them when the spider dives under water. We’re actually using Physics class here! It’s similar to bubbles forming on dust particles on the inside… Read more »

greenvilleeee

Pisauridae – Dolomedes sp

TangledWeb

Please remember to read what the photo submitters write and what other volunteers write. It takes many of us a while to get in that habit. I realized that sometimes the submitter already knows what the spider is and it would shorten my research time if I start with what they wrote.

greenvilleeee

Ok, thanks!!

Additional Pictures

Picture of Dolomedes tenebrosus (Dark Fishing Spider) Enlarge Picture
Picture of Dolomedes tenebrosus (Dark Fishing Spider) Enlarge Picture
Picture of Dolomedes tenebrosus (Dark Fishing Spider) Enlarge Picture
Picture of Dolomedes tenebrosus (Dark Fishing Spider) Enlarge Picture