Chilobrachys dyscolus sp. “Vietnam” is a striking Old World fossorial tarantula known for its deep metallic blue sheen, especially visible on freshly moulted adults and subadults. Native to Vietnam’s warm, humid tropical forests, this species inhabits deep burrows in compact soil, emerging at night to hunt. Like most Chilobrachys, it is fast, alert, and highly defensive, relying on speed and threat postures rather than retreat. Its combination of iridescent colouration and bold behaviour has made it one of the most recognisable members of the genus.
 
In captivity, this species is hardy but suited to experienced keepers due to its speed and willingness to stand its ground. Slings and juveniles grow quickly when kept warm, and they construct elaborate web tunnels and burrow systems if given sufficient depth. Adults are highly secretive, spending most of their time underground, but will web extensively and often create impressive silk curtains at the burrow entrance. Feeding responses are strong and often dramatic, with prey taken quickly and dragged into the burrow.
 
Husbandry focuses on providing a deep, stable substrate and a warm, humid microclimate. A terrestrial fossorial enclosure with 15–20 cm of compacted substrate allows for proper burrow construction. Temperatures of 24–28°C suit them well, with humidity around 70–80%, maintained through occasional watering of one side of the enclosure rather than misting. Cross‑ventilation is important to prevent stagnant air. A water dish should always be present, even though the species rarely emerges to drink. With the right setup, Chilobrachys dyscolus sp. “Vietnam” becomes a robust, long‑lived display of intricate webbing and classic Old World behaviour.