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Spider BG507 - Cheiracanthium

Spider BG507 - Cheiracanthium
Baton Rouge, La Crete Lane at I10, East Baton Rouge Parish, Louisiana, USA
October 14, 2006
Size: body length 5.3 mm.

Images of this individual: tag all
Spider BG507 - Cheiracanthium Spider BG507 - Cheiracanthium Spider BG507 - Cheiracanthium Spider BG507 - Cheiracanthium

Moved back to Cheiracanthium =}
Moved from Strotarchus.

Becoming confused...
I was taking a closer look at our Strotarchus section... I left a comment on this other one the Stricklands submitted, which looks exactly like this one, making me think this may also just be Cheiracanthium inclusum.

I feel like the black pigmentation around the anterior median eyes is just making them appear larger than they really are (easier to see when viewing the full-sized close-up (1000x906) of the eyes). I sure wish we had a couple voucher images of Strotarchus piscatorius to see just how large the AME should be in that species. To make things even more difficult, S. planeticus is said to have "considerably smaller AME," according to Edwards 1958(1).

Also, Kaston 1938[cite:698390,13] says in Strotarchus piscatorius, the clypeus would be a lot taller (it should be 2/3 the diameter of the AME) & then again in Edwards 1958(1) it says "clypeus high" in the genus description for Strotarchus. This one hardly has a clypeus at all.

I'm becoming real confused about these.

"clypeus high"
Strotarchus has clypeus high. Very nice catch Mandy. I did some google searching and was able to find a bunch of great photos of Strotarchus piscatorius. See here. LR JXX3k Eyes anteri... is the one that shows the clypeus.

Tell me again how are you separating Cheiracanthium inclusum from C. mildei? Are you using outside vs. inside habitat?

Strotarchus pics
Awesome!! I was excited to finally see a verified one! I'm going to add a link to those pics on the genus page. We should keep those handy.

I don't really use the habitat to separate the two Cheiracanthium, I never thought that was a very reliable thing to use since both species have been found in both habitats. Sometimes I use the bright yellow color as a good indicator that it's probably C. inclusum, but that's still not always reliable. In this case, I suggested C. inclusum because I was thinking this is exactly like the other one the Stricklands submitted, which had the epigyne pic for verification that it was C. inclusum (there's a link to their other one in my above comment).


eye arrangement
This image is being used in the eye arrangement article, thanks!

Probably Strotarchus, not Cheiracanthium

This really nice set of photos of what is probably a Strotarchus piscatorius, not Cheiracanthium. The anterior median eyes are distinctly larger than the other eyes, one of the few consistent differences (other than the genitalia). A male would be very obvious because Strotarchus has a very long projection on the cymbium of the palp. This is clear with a naked eye view!

The eye difference is pretty clear in this photo so I think we should move it to Strotarchus.
Strotarchus piscatorius (Hentz, 1847) Family Miturgidae [same place where Cheiracanthium is currently classified]

These two genera were long classified in the Clubionidae.


Strotarchus, etc.
Many thanks for the detailed information on the ID of our specimen.
I think this may be another candidate for Strotarchus.

Strotarchus/Cheiracanthium confusion
I stand corrected, I have others in my collection that will need closer inspection, Thank You Sincerely Richard.

Really confused now?!
So it is Cheiracanthium, not Strotarchus?

It's hard to follow the comments, but if you look at the dates it helps. The last we could figure out they clypeus here proves it's Cheiracanthium.

Thanks Richard
I see there are two species in this genus, my SONA says that piscatorius is found along the eastern coast and planeticus is southern (TX to AZ). Do you think with range info we can place this as planeticus?

Also, can you tell me what the description for Cheiracanthium eye arrangement is so that I can write a clear description on how to tell Cheiracanthium from Strotarchus using the eyes on the guide page? Thanks.