Dolomedes tenebrosus

[wolfs79]

May asked this before but has anyone ever had any luck finding dolomedes tenebrosus along a river?

I live by a medium sized river, and can easily find dolomedes scriptus a dozen in an hour so tenebrosus occasionally wander close to water?

The scriptus come out just as the sun goes down and the just sit on the rocks along the river.

I know dolomedes tenebrosus are usually found far away from water we do have trees along the river banks but as far as large forests really none around here.

I live in Minnesota and supposedly they are here I have seen plenty of pictures.

Should I look more on the trees along the river banks since they say tenebrosus likes to perch vertically vs scriptus enjoy the rocks

 

[Liquifin]

May asked this before but has anyone ever had any luck finding dolomedes tenebrosus along a river?

I live by a medium sized river, and can easily find dolomedes scriptus a dozen in an hour so tenebrosus occasionally wander close to water?

The scriptus come out just as the sun goes down and the just sit on the rocks along the river.

I know dolomedes tenebrosus are usually found far away from water we do have trees along the river banks but as far as large forests really none around here.

I live in Minnesota and supposedly they are here I have seen plenty of pictures.

Should I look more on the trees along the river banks since they say tenebrosus likes to perch vertically vs scriptus enjoy the rocks

I don't know when is it breeding season around your area, but in NC they're in awakening season. Soon next month will be breeding season, which is when they are very active. All fishing spiders are close to water when laying eggs or spawning. Don't look in the mornings, best to look in late afternoons or sunset when it's dark. They're nocturnal and at night all fishing spiders are out and about. In the wild they're pretty bad at hunting fish, with very little accuracy of hitting one. But they're fishing spiders nonetheless, they're not hard to find if you know what their active patterns are in your area.

 

[Ungoliant]

May asked this before but has anyone ever had any luck finding dolomedes tenebrosus along a river?

Should I look more on the trees along the river banks since they say tenebrosus likes to perch vertically vs scriptus enjoy the rocks

Most of the Dolomedes I've seen (except D. triton) are not in aquatic areas.

I find them at night on things like walls and trees.

This penultimate male D. albineus was hunting on a garbage can we use for storing scrap metal.

Penultimate Male Dolomedes albineus

• Ungoliant
• Jul 15, 2017
• 1
• albineus dolomedes dolomedes albineus fishing spider penultimate male pisauridae whitebanded fishing spider

I found this immature male whitebanded fishing spider (Dolomedes albineus) on top of one of our...

Penultimate Male Dolomedes albineus

• Ungoliant
• Jul 15, 2017
• albineus dolomedes dolomedes albineus fishing spider penultimate male pisauridae whitebanded fishing spider

I found this immature male whitebanded fishing spider (Dolomedes albineus) on top of one of our...

 

[wolfs79]

I don't know when is it breeding season around your area, but in NC they're in awakening season. Soon next month will be breeding season, which is when they are very active. All fishing spiders are close to water when laying eggs or spawning. Don't look in the mornings, best to look in late afternoons or sunset when it's dark. They're nocturnal and at night all fishing spiders are out and about. In the wild they're pretty bad at hunting fish, with very little accuracy of hitting one. But they're fishing spiders nonetheless, they're not hard to find if you know what their active patterns are in your area.

Thanks yeah I go out at dark and they are super easy to find the scriptus anyhow the tenebrosus have eluded me so far.

Thanks appreciate your replies

 

[wolfs79]

Caught this one few nights ago when it actually got warm out found by river on a rock I think it's getting ready to molt.

Just need to find some tenebrosus may need to head east where we have larger forests.





member: 127359"]I don't know when is it breeding season around your area, but in NC they're in awakening season. Soon next month will be breeding season, which is when they are very active. All fishing spiders are close to water when laying eggs or spawning. Don't look in the mornings, best to look in late afternoons or sunset when it's dark. They're nocturnal and at night all fishing spiders are out and about. In the wild they're pretty bad at hunting fish, with very little accuracy of hitting one. But they're fishing spiders nonetheless, they're not hard to find if you know what their active patterns are in your area.[/QUOTE]

I don't know when is it breeding season around your area, but in NC they're in awakening season. Soon next month will be breeding season, which is when they are very active. All fishing spiders are close to water when laying eggs or spawning. Don't look in the mornings, best to look in late afternoons or sunset when it's dark. They're nocturnal and at night all fishing spiders are out and about. In the wild they're pretty bad at hunting fish, with very little accuracy of hitting one. But they're fishing spiders nonetheless, they're not hard to find if you know what their active patterns are in your area.

 

[bond5294]

Isn't that a

Caught this one few nights ago when it actually got warm out found by river on a rock I think it's getting ready to molt.

Just need to find some tenebrosus may need to head east where we have larger forests.





member: 127359"]I don't know when is it breeding season around your area, but in NC they're in awakening season. Soon next month will be breeding season, which is when they are very active. All fishing spiders are close to water when laying eggs or spawning. Don't look in the mornings, best to look in late afternoons or sunset when it's dark. They're nocturnal and at night all fishing spiders are out and about. In the wild they're pretty bad at hunting fish, with very little accuracy of hitting one. But they're fishing spiders nonetheless, they're not hard to find if you know what their active patterns are in your area.

[/QUOTE]
Is that photo of a dolomedes scriptus? It looks very similar to a tenebrosus to me, how can you tell the difference between the two species?

 

[Ultum4Spiderz]

Isn't that a

Is that photo of a dolomedes scriptus? It looks very similar to a tenebrosus to me, how can you tell the difference between the two species?
[/QUOTE]
Last seen I don’t expect you’ll get a response unless the OP returns soon.Nov 20, 2023

 

[aaarg]

the well-defined and complete stripe along the middle of the cephalothorax/prosoma is what suggests scriptus rather than tenebrosus, though the two are sometimes hard to differentiate

bugguide's Dolomedes page is quite helpful:

Genus Dolomedes - Fishing Spiders

An online resource devoted to North American insects, spiders and their kin, offering identification, images, and information.

bugguide.net

 

[advan]

Check buildings close to water, i.e. boat houses, cabins etc. I have found them sitting out at night waiting for prey at 45F in the fall on Lake Vermilion. Look anywhere from the edge of the water source up to 300ft from it. When you are looking on trees, you need to look slowly as they blend in really well. Don't forget to check high up too. I've had climb a ladder to get some pics of them before.

 

[aaarg]

if you're out at night, shine a bright flashlight up a tree trunk - a lot of times you can see their eyeshine up pretty high!