What's the difference between a Grammostola rosea and a Grammostola cala?

[Hydrazine]

Sadly, the Grammostola genus, like a lot of arachnids, is not considered "cute" for the main bulk of human population, nor endangered, medically significant or with any other significance except for the hobby, hence its research (read research FUNDING) is not prioritized. I'm afraid the rest of the world can't understand the importance of taxonomy in the hobby like we do and there are less and less people in the world who'd do it FOR SCIENCE! or because they are interested in the subject themselves..and those who do have trouble getting a grant for it for the aforementioned reasons.

Guess we have to wait till an AB or other website member (or members) lose patience, get a degree in the proper field and do it themselves (or raise children who do so)

 

[netr]

A cursory search on the following didn't turn up a great deal, although the search process on this site is an art to be honed. It would be interesting to read some confirmed reports from anyone (from hobbyist to breeder to arachnologist) on having ever 'crossbred' G. rosea colour forms (if indeed there are colour forms, rather than, as Stan has earlier suggested, individuals variously spanning a certain range of colouration), and of course on the resulting offspring. I'm not what you'd call scientifically educated and can't pretend the remotest expertise on the subject of tarantula classification and taxonomy, so I scarcely feel entitled to any judgement on this at all. But for what it's worth (and here I pass the point of having any idea what I'm talking about) I'd feel more comfortable about the forms representing the same species if we observed more such colour variation among tarantulas in general. Like everyone else, I'd love to know what's special about G. rosea!

I recently bought a subadult male rose (and a lovely fellow he is too) to pair with my female when the time comes. Purchased as a subadult from a pet shop a decade ago, I'm going to guess she wasn't the result of captive breeding. The handsome new stud, bought on my behalf from an expo, who knows. Without complete certainty about either individual there's nothing useful to the issue to be gained from the breeding, but all the same, since they're both 'NCF', I'll be very interested to see what (if anything) crawls out of the sac.