I've recently bought this girl and they sold her as a "Thai Tiger Tarantula". I have not been able to find an exact scientific name matching the "Thai Tiger"and I have been mixed up trying to figure out if she is a Haplopelma Vonwirthi or a Haplopelma Longipes or even a Haplopelma Minax
Get rid of the thermometer and the hydrometer. You don't need them and they can actually throw you off. Humidity doesn't matter, the wetness of the substrate does. And temperature should just be room temperature. Whatever you're comfortable at, the spider will be comfortable at.
You'll never get an confirmed species from a specimen photo like these. The differences between these look alike species calls for much closer examination to identify. Even Volker Von Wirth (the guy that spider is named after) will tell you the same thing. The reason why it's likely Cyriopagopus (Haplopelma is currently invalid) vonwirthi is they are more common than the other species and they inhabit a gaint range compared to the other species, therefore more likely to be in wild caught imports.
A blurb from Soren replying to the 100's of threads like this one.
"We can say with some certainty that you have a Haplopelma belonging in the "minax-group" which consist of the following species: H. minax, H. albostriatum, H. vonwirthi, H. longipes and H. lividum.
So which one is it?
Well first we look at the legs. Is the lenght of leg 1 longer, shorter or equal to leg 4?
In H. minax, H. albostriatum, H. vonwirthi, it's more or less equal whereas in H. longipes and H. lividum leg 4 is noticeably longer and robust than leg I.
H. minax is a robust bodied and stocky legged species that is when freshly molted jet black with a mossy greencarapace and a velvety black abdomen without noticeable patterning and black spinnerets.
H. vonwirthi are dark grey (to almost black shortly after a molt) sometimes with a vague olivegreenish tinge to the carapace, often sports faint leg patterns in particular on the patella, have easily discernible abdominal patterning and often sports orangeish spinnerets.
"The description of H. vonwirthi is so vague,though, that in reality it can only be discerned that the spider in question is belonging in the minax-group of genus Haplopelma. If we assume that it is identical with what we know in the hobby as H. vonwirthi then according to Wirth the main taxonomic character to truly differentiate between H. vonwirthi and H. minax is the presence of plumose setae on the femur of H. vonwirthi.