Ceratogyrus wrote: Both light form and dark form have been recorded from the same eggcase in any way.
If I were to sell any, the buyers would be told that they are 2 'colour forms'.

How could they have been recorded in the same egg sack if they come from two different places and require different temperatures to survive and breed at? Where has this been documented? One thing I've learnt while growing up is that you always ask for proof.

Well luckily it is my decision to breed them or not to.
What if they dont get cooler temps? Do you keep all your spiders at the right temps even though they probably come from different continents in different hemisphere's? Do they get a few hours of sunlight everyday and water to match their natural habitat?
This is the same as the hybrid thread. If you don't want any dark form x light form subfuscas, just don't buy them. More for me.
If I do get success and decide to breed them, I will sell them as P.subfusca and mention that the mother was dark and the father was lighter. Most will probably be given to close friends any way.
There are numerous threads on arachnoboards and The BTS from successes with both forms in the same sac. As for proof, the breeding threads will just have to be believed. Or we can check my females offspring by the end of next year if its successful.

www.reptileforums.co.uk/forums/spiders-i...4382-p-subfusca.html

www.reptileforums.co.uk/forums/spiders-i...ighland-lowland.html

www.tarantulaslair.com/main/viewtopic.php?f=14&t=2871

www.arachnoboards.com/ab/showthread.php?...-LOWLAND-p.-subfusca

After reading these I guess you can choose for yourself. No one can seem to find the proof of the two different colour phases in one egg sack. It's up to the individual in the end though, if one things it will be helping the hobby in the end.

There have been too many debates on practically every forum about the 'highland' and 'lowland' form of P subfusca to come too a proper conclusion.....
I personally think that because the ventral markings (so supposedly crucial to pokie identification) are plain black, it's thrown a lot of people off. The dorsal markings (particularly on the opisthosoma), and on the carapace to some degree, plus the fact that their husbandry seems to show distinct differences, to me indicates that they are different species.....
Just my opinion and I guess we'll have to wait and see what transpires if they get more samples or get some DNA verification...time will tell

Taki wrote: I personally think that because the ventral markings (so supposedly crucial to pokie identification)

They are not supposedly crucial. They are VERY crucial for accurately identifying Poecilotheria species. Without them who knows what species you would put together. Leg patterning has always been the most accurate way to identify pokies and will be till everyone has their own private DNA lab in the basement.

Carapace and abdomen patterning are very similar in similarly sized specimens.
Lots of people have kept both light and dark form in the same room with no problems.
So till I hear any different with proof, they will be named and kept as the same species by me (As they currently are)

Obviously they are VERY important but you're missing my point, if the ventral markings are uniformly black, does that ensure that they are the same species??? Imo not