Brachypelma klaasi • 7/8″


Brachypelma klaasi (Mexican pink beauty), captive bred, endemic to coastal, southwest Mexico. A medium-large fossorial, hardy, held in high esteem by hobbyists, and growing to 5+”. Recommended for all experience levels.



Brachypelma klaasi has been popular since its description in 1994. It is a member of the red-leg group living on the coastal slopes [1] of Mexico’s Pacific ranges. B. klassi is restricted to Pacific slopes in the state of Jalisco, with some extension north into Nayarit and south into Colima. In Nayarit and Colima, B. klaasi is sympatric with B. emilia and B. hamorii, respectively [2]. The coastal forests of Nayarit, Jalisco, and Colima are together called Jalisco dry forest [3].

Bright green along the Pacific coast corresponds to areas of Jalisco dry forest and Brachypelma klaasi endemism.

Texts describe B. klaasi inhabiting Jalisco coastal forests of the Sierra Madre Occidental in Jalisco (SMO). Strictly speaking, the SMO ends and a younger volcanic group constitutes the Jalisco coastal range [4]. This younger range is the western reach of the Trans-Mexican Volcanic Belt (TMVB). Jalisco’s Volcán de Colima erupted in 2013, 2014, and 2015 and is Mexico’s most active volcano.

The TMVB has biogeographical implications for Jalisco’s western slope inhabitants:

“The convergence of the Sierra Madre Occidental and the Trans-volcanic belt physiographical provinces make this a particularly diverse dry forest. The Jalisco dry forests house almost 1200 species of plants (Lott et al. 1987), of which 16% are endemic” [3].

B. klaasi too is endemic to Jalisco dry forest. Local volcanic orogeny set the stage. The resulting climate is tropical subhumid, Köppen classification Aw–tropical savanna with wet summer/fall and dry winter/spring. Warm temperatures and seasonal rains support deciduous forest, dry scrub, and B. klaasi.

South of the TMVB, the Sierra Madre del Sur begins. One enters B. hamorii territory.

Mendoza and Francke found B. klaasi in oak forest at higher elevations, and deciduous forest and coastal thorn scrub at lower elevations. They found specimens in both modified and self-excavated burrows [2]. In 2011 Eddy Hijmensen compiled data on B. klaasi, including photographs of habitat and B. klassi in situ, which continue to be useful.

In captivity, B. klaasi places no particular demands on the keeper. When disturbed it releases urticating hairs. Juveniles and larger specimens are drought tolerant. Spiderlings, as always, need closer attention to prevent drying out.

[1] Rojo, R. (2004). Las tarántulas de México: Pequeños gigantes incomprendidos. Conabio Biodiversitas 56: 7–11.

[2] Mendoza, J. & Francke, O. (2020). Systematic revision of Mexican threatened tarantulas Brachypelma (Araneae: Theraphosidae: Theraphosinae), with a description of a new genus, and implications on the conservation. Zoological Journal of the Linnean Society 188(1): 82-147.

[3] World Wildlife Fund: Places/Ecoregions/Terrestrial Eco Regions/Tropical and subtropical dry broadleaf forests/Jalisco dry forests.

[4] Knight, C., Hu, H., Glascock, M., & Nelson, S. (2017). Obsidian  sub-sources at the Zaragoza-Oyameles quarry in Puebla, Mexico: Similarities with Altotonga and their distribution throughout Mesoamerica. Latin American Antiquity. 28. 1-20.

Additional information

Weight 0.01 lbs
Dimensions 1 × 0.5 × 0.5 in