Ybyrapora

Dominik Alexander
Nov 2, 2025
2 min read

Ybyrapora is a small genus of arboreal tarantulas in the family Theraphosidae, endemic to Brazil’s Atlantic rainforest. It was formally established in 2017 by Fukushima & Bertani as part of a major taxonomic revision of the old “catch-all” genus Avicularia, where several distinct lineages were split off into new genera, including Ybyrapora.

The genus currently includes three species—Ybyrapora diversipes, Y. gamba, and Y. sooretama—all originally described in Avicularia and later transferred once their unique morphology and distribution were clarified. These spiders are generally smaller than many other aviculariines and are characterized by features such as strongly curved, weakly hardened spermathecae in females and a reduced or absent tibial apophysis in males, along with dramatic color changes as they mature.

All known Ybyrapora species are tree-dwelling, living in vegetation from Bahia south to Rio de Janeiro in the Atlantic Forest biome. The genus name is derived from the Tupi language and roughly translates to “tree dweller,” a direct nod to their arboreal lifestyle.

Genus and species: Ybyrapora diversipes

Common name: Amazon Sapphire

Given name: Oakley

Y. diversipes is an arboreal species native to Brazil. This species has beautiful coloration with blues, greens, purples, reds and oranges. Adults can reach 5 inches. They are considered to be fast and skittish.

Habitat: Amazon rainforest regions where it constructs webs in crevices and foliage.

Husbandry Notes:

Enclosure: 3x3x5

Sex: Undetermined

Life stage: Sling

Size: Approximately 1.25 in

Growth: Steady

Disposition: Fast and twitchy

Eating habits: Have not witnessed a takedown

Misc: Generally visible with a sling personality