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"Grammostola pulchra" (?)

Material:
Skin of an immature male, Carapace length 6,7 mm.
Labeled as Grammostola pulchra.

Description (only main features):
Urticating setae only type IV present.
Femur IV retrolateral without a pad of plumose setae.
Leg I Trochanteral stridulatory bristles absent.
Leg I Coxal stridulatory bristles present.
Labial cuspules > 50.

Diagnosis:
Based on the these features the specimen belongs into the subfamiliy Theraphosinae, Tribus Grammostolini. Differs from the most Genera within the Grammostolini due the larger number of labial cuspules (<15 all, except Grammostola, Homoeomma, Tmesiphanthes).
All presente features fits into the diagnosis of the genus Grammostola, but due to the lack of other characteristics, especially sexual organs, a reliable determination of the genus is not possible.

Remarks:
This specimen of an immature male differs from Grammostola pulchra by the shape of the spiniform seta on the prolateral coxae, which is more slender and long.
Pittella et. al. (2023) describe for Grammostola pulchra the spiniform setae on the prolateral coxae as "short broad-based".

References:

• Cooke JA, Roth VD, Miller F. (1972). The Urticating Hairs of Theraphosidae. Am Mus Novit. 2498:1–43.
• Pérez-Miles, F., Lucas, S. M., Silva Jr., P. I. da & Bertani, R. (1996). Systematic revision and cladistic analysis of Theraphosinae (Araneae: Theraphosidae). Mygalomorph 1: 33-68.
• Pittella RS, Bassa PG, Zefa E, Bianchi FM. Using the Integrative Approach to Update a Gap of One Century: Redescription and New Distribution Records of the South American Tarantulas Grammostola pulchra (Araneae: Mygalomorphae: Theraphosidae). Zool Stud. 2023 Apr 6;62:e5. doi: 10.6620/ZS.2023.62-05. PMID: 37124869; PMCID: PMC10131071.
• Turner et al. (2017) Re-evaluating conservation priorities of New World tarantulas (Araneae: Theraphosidae) in a molecular framework indicates non-monophyly of the genera, Aphonopelma and Brachypelma