03/30/2026
Even Josh's Frogs is using their platform to correct hobbyists and keepers alike.
Why can't others?
There's literally no reason to still be seeing vendors and retailers selling Grammastola quirogai (that are still being imported) as "rare" (protected) Brazilian black aka Grammastola pulchra. ..unless of course you enjoy furthering misinformation and ripping your customers off..
For many years, the tarantula hobby labeled most large, jet black Grammostola from the Brazil-Uruguay border region as Grammostola pulchra. A 2016 taxonomic study by Montes de Oca, Guillermo D'Elía, and Fernando Pérez-Miles helped clarify that many of these spiders were actually Grammostola quirogai. Researchers found that most black Grammostola exported for the pet trade came from Uruguay, the native range of G. quirogai, rather than southern Brazil, where the true Grammostola pulchra occurs. Their work showed that the spider widely sold in the hobby as G. pulchra more closely matched the description of G. quirogai. Later research also provided a clearer description of the true G. pulchra. Unlike the large, velvety black spider familiar to hobbyists, it appears to be smaller and lighter in color, often showing a brownish gray tone with yellowish or gray tipped hairs. Some keepers believe that true G. pulchra may occasionally appear in the trade labeled as Grammostola sp. “Formosa.” In general, G. quirogai grows larger and more robust, often exceeding a 6 inch leg span, and displays the deep, jet-black coloration the hobby associates with the “Brazilian Black.” The true G. pulchra is typically smaller and shows a more silver or brown sheen. Aside from genetic testing, the most reliable way to distinguish the two species is by examining the tibial hooks and palpal bulbs of mature males. Here we have a young male, around four years old. His name is Voltaire and we now know him to be a Uruguayan Black Beauty Tarantula, known scientifically as Grammostola quirogai.
Credit - Jayzun Boget, Curator of Arachnids at Josh's Frogs