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Chilobrachys dyscolus , also known as “Asian smokey earth tiger” or “Burma chocolate brown”, is a remarkable and stunning bird spider due to its coloration and anatomy from Myanmar, Malaysia, Vietnam and India (source). Sometimes you’ll notice people talking about the “Vietnam blue”, which is referred to Chilobrachys dyscolus blue form, commonly known as Chilobrachys sp. blue vietnam. This specific species is native to South Vietnam. However the “chocolate” in her common name makes you think different, the spider swaps color from chocolatebrown to black (blue) post-molt. Mother Nature keeps surprising.

Scientific classification

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Subphylum: Chelicerata
  • Class: Arachnida
  • Order: Araneae
  • Infraorder: Mygalomorphae
  • Family: Theraphosidae
  • Genus: Chilobrachys


Chilobrachys hardwicki is endemic to eastern India, this species is found in Shahjahanpur in the north and Bilaspur in the south at an altitude of less than 500 m. The extent of occurrence encompassing known and inferred distribution is around 125,000 km², while the area of occupancy is more than 20,000 km². In Bihar: Dharhara in Monghyr, Sahibgunge, Chakardharpur in Singbhum in Chota Nagpur, Gmatia in Birbhum (Gravely 1915); Chattisgarh: Bilaspur (Pocock 1900); Jharkhand: Hazaribagh (Gravely 1935); Uttar Pradesh: Shahjahanpur in Burdwan (Pocock 1900); West Bengal: Murshidabad.

Habitat and Ecology

The species was found in degraded dry deciduous and moist evergreen forests. There have been reports of its occurrence around coal mine areas (B.K. Biswas pers. comm.). Burrows are on flat ground. There is no information on breeding biology, behaviour and ecology of the spider. No local use is known for this species. The species is in international pet trade.

Chilobrachys images

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