My G porteri (?) I got yesterday

Identified as porteri via color of the femurs


MM sp north (or so i have been told)


rosea (red color form - some say that it is the only color form but i don't know.....)


Not a great quality pic but believed to be sp north due to pink stripes on the femurs.


I also have another one that i am unsure because supposedly according to some the red color form is the only form of rosea so it cant be rosea, soesn't look like porteri or sp. north, not sp concepcion and i don't think it is sp maule....



Hopefully i have helped to make you just as confused as i am on the topic.

@Theneil you sure have haha, mine resembles the last one, the one you're not sure about. Hopefully someone else can shed some light on this. Kinda has that vague pink/purple-ish tint on its carapace, but the rest of the body is pretty much brown.

porteri, and rosea will have the purple/pink on the carapace as well, just not near as PINK as the sp north (based on my specimens)

@Theneil I did some research, and the grammostolas I found that resembled mine and yours the most were g vachoni, and g inermis. Look them up and tell me what you think.

My bet is on the g vachoni.

Bump, also look up G. chalcothrix, an even better candidate.

Are those 3 even available in the hobby?

@The Grym Reaper I have no idea, I'm just trying to figure what kind of tarantula I've purchased.
I read the the g. vachoni is pretty much endangered, don't know about the other two.

There are some people on this forum in some of the older threads who've purchased/had the g. chalcothrix.

@dariopathic i will take a looknout of interest, however i am no taxonomist and i am not qualified to ID any species. LOL

Also, i think the chilean tarantulas are one of if not the first brought into the pet trade in mass numbers and are probably one of the most mislabeled groups in the hobby, so if those other sp. come from nearby localities, i wouldn't be even remotely suprised if there are some that were broght into the hobby as G. rosea or porteri not knowing that they were different sp.

Also, it is my underatanding that technically color is not even supposed to be used to properly identify a species, as there can be great variation in color sometimes or different coloring of the same species from different areas.

I think the features used to identify/describe species are (including but not limited to):

Shape of spermathecae/palpal emboli

Ratio of width to length of carapace

shape/arrangement of thr ocular tubicle(spelling?)

Ratio of lengths of leg segments and legs to eachother

amount of scopula found on each leg and the placement of it

Type of Urticating hairs present (when applicable)

And i am sure there are many, many more other features as well. I don't know if patterning is an acceptable tool to use or not, though i do know it is used for Poecilotheria sp.

Additional photos: