Description
Named after a park in Vietnam, Cyriopagopus sp. “Bach Ma” seems to have staying power when it comes to catching hobbyist interest. The phenomenon is not easy to explain given a rather dull spider with patterned shades of grey and brown–not to mention the steady stream of new undescribed southeast Asian fossorial species against which it’s had to compete. Nonetheless we’re lucky such cornerstone species exist. We appreciate the chance to observe and study them.
Although undescribed means knowledge is limited, we know C. sp.”Bach Ma” is an obligate burrower of medium size, a classic ambush predator. In captivity you may find yours sitting at its burrow entrance, forelegs and pedipalps visible, ready to jump-catch passing prey.
Captive C. sp. “Bach Ma” like water but not wetness. For spiderlings, start with substrate that’s slightly dampened: 1 part water to 10 parts dry substrate. Limit ventilation enough to allow humidity to build. Room temperature (68-72F) is fine. Warmer temperatures to 80F will accelerate growth but also cause substrate to dry faster. Consider adding a water dish as insurance against dehydration.
Juveniles and adult tarantulas are more drought tolerant than spiderlings. As your pet grows, allow its substrate to dry some from time to time, as you would for a houseplant. A water dish and/or occasional spritzing can help with humidification/hydration.
Photos: 1-immature female; 2-one of the specimens for sale
Care highlights:
- slightly dampened substrate for spiderlings
- elevated humidity (75-90% RH) +/- water dish support
- room temperature (68-72F) up to 80F
- consider forest litter and plantings for enrichment
- older instars tend to do better with less enclosure moisture









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