unofficial Jeff C picture thread

[phil]

Hi Timo
although i have mentioned colour i have not soley based my findings on that, i have also noted SAB's and protuberance variants.
interesting photo of a w/c with the small protuberance and double SAB, in one way that is a good thing, being W/C it may show that the C.brachycephalus "hobby" that exhibit double SAB's may not be hybrids at all, other than a few as seen with varying SAB's from one eggsac as I posted.
If the SAB is a stable feature within Ceratogyrus species as it is with C.meridionalis, bechuanicus / darlingi and marshalli, having looked at the original paper for C.brachycephalus there is description of a large anterior facing protuberance peaking just posterior to the ocular tubercle and it also indicates a single SAB, unfortunately i do not have the De Wet & Dippenaar-Schoeman paper and i would also like to see the description for C.sanderi, but if C.brachycephalus does have a stable single SAB and long pointed anterior facing protuberance, and C.sanderi have a stable small plug / slightly raised anterior facing protuberance and double SAB, based soley on SAB and protuberance i think that would place your W/C specimen in the sanderi "group" and not the brachycephalus, perhaps a sanderi colour variant but again, this all depends on the stabillity of the features we are discussing perhaps a redescription is over due to clear this up A job for our Mr Gallon I think................

 

[T.Raab]

Hi Phil,

like we talked yesterday. I'm not sure abou the ID of the spider i posted above. I also know (if that Info is OK) that it was a W/C Female. I marked this specimen after death few weeks ago as Ceratogyrus "brachycephalus" based on the incertitude ID.
I will try to manage this Strand Paper and if i get it, i can translate it to you in english (like you know Strand was a german guy ).
I will also copy the Ceratogyrus Revision from 1991 for you and will send it to you.

 

[Ulwembu]

First of all, I've never taken pictures of horn variations of Ceratogyrus in nature. I did take pictures of several horn variations of captive specimens years ago so I guess that's where the comments come from.

Secondly, the ceratogyrus revision of 1991 is incomplete and not up to date anymore as you know Timo... Same as Strand paper...

 

[T.Raab]

Hi Thomas,

yes the revision of 1991 and Strands Paper are not the best, but at the moment the only reference about brachycephalus/sanderi. Its not so wrong to take a look what they wrote and compare.
Like we (Phil and myself) wrote above, its time that this "difficult" group will revised by Gallon.

I also know (if that Info is OK) that it was a W/C Female. I marked this specimen after death few weeks ago as Ceratogyrus "brachycephalus" based on the incertitude ID.

I got now some weeks ago info about this specimen and got the collecting locality what was in Zambia. This specimen and the locality will got to Gallon for further studies.

 

[Michael Jacobi]

Going back to Jeff's ultimate male C. brachycephalus (hobby form or whatever you wish to call it) and its mating with my female - I finally was able to get the slides scanned and posted nine photos in my mating thread at: http://www.arachnoboards.com/ab/showthread.php?p=662981.

Cheers, Michael