Spider id

[Saltfishlover]

Just found this on a chalice frag. I dip, so caught it. Any idea what kind of spider it is, what does it eat? Lifecycle?

 

[Reefer Matt Verified Media Partner]

Just found this on a chalice frag. I dip, so caught it. Any idea what kind of spider it is, what does it eat? Lifecycle?

Bumping this for you.

 

[kyreefville]

Dang spiders where did you get the frag?

 

[Saltfishlover]

Lets just say "close friends" I don't really want to shame anyone just yet. 4 came off during dip though

 

[jofy]

was it on zoanthids?

 

[Saltfishlover]

Nope, a chalice. It's definitely not a zoa spider. Hoping none slipped in the tank, that's why I'm trying to id for life cycle and egg laying

 

[VintageReefer]

@ISpeakForTheSeas any idea?

 

[Saltfishlover]

Closest I see is Acan eating spiders. It's kind of like what a dead wolf spider looks like, pretty transparent. The one in the pic was the largest. Dip used was potassium chloride and it killed it almost instantly

 

[DaJMasta]

While I don't think there are many people that know more than a few kinds of sea spiders, you may also need to get some magnification on it to really try and figure it out.

The safest assumption? If they were living on a chalice, they're a chalice corallivore.

 

[Saltfishlover]

I don't have it anymore to magnify it unfortunately. For scale that is inside a 10ml glass pipette with 1ml graduated marks visible in the background. I'll keep dipping chalices

 

[ISpeakForTheSeas]

@ISpeakForTheSeas any idea?

Sea Spider ID can be pretty tough and I don't get to do it very often (probably a good thing), but pics of the body parts around the proboscis would be needed for specifics. Also, OP, if you find any carrying eggs/babies, info on that is sometimes useful for ID as well (it can sometimes help tell if the specimen is male or female).

I can't see the proboscis at all in the pic, but each sea spider has a proboscis; from there, they can also have any or all of the following, sometimes dependent on sex:

-Chelifores
-Palps
-Ovigers

(For examples/explanations of what those are and where to find them):

Phylogenomic Resolution of Sea Spider Diversification through Integration of Multiple Data Classes

Despite significant advances in invertebrate phylogenomics over the past decade, the higher-level phylogeny of Pycnogonida (sea spiders) remains elusive. Due to the inaccessibility of some small-bodied lineages, few phylogenetic studies have sampled all ...

www.ncbi.nlm.nih.gov

Depending on which of the above are present on a pycnogonid (a sea spider), we can narrow it down to a taxonomic family. I don't remember offhand how to narrow it down to genus/species from there, but I could figure it out again if needed.

 

[goody]

Looks very similar to what I had come in on a frag awhile back.

Spider looking critter id please

I put some of my euphyllia and goniopora in a holding tank before moving to my new build. I knew I had red planaria, so I was using FWE. Bought a couple euphyllia and put in the tank also because there were flatworms in the bag. Decided to do a hydrogen peroxide dip on my gonis which have...

www.reef2reef.com

 

[Saltfishlover]

Looks very similar to what I had come in on a frag awhile back.

Spider looking critter id please

I put some of my euphyllia and goniopora in a holding tank before moving to my new build. I knew I had red planaria, so I was using FWE. Bought a couple euphyllia and put in the tank also because there were flatworms in the bag. Decided to do a hydrogen peroxide dip on my gonis which have...

www.reef2reef.com

That is exactly what the ones I had looked like. Except for some reason one was missing a leg. I didn't see any with eggs and no babies seemed to fall off in the dip. It was super fast to kill in a potassium chloride dip.