Lasiocyano sazimai, popularly known as the Brazilian Blue or Sazima's Tarantula, is a monotypic genus of tarantula celebrated for its striking iridescent blue coloration. 
 
Biological Profile
Scientific Name: Lasiocyano sazimai (formerly Pterinopelma sazimai).
Discovery: First described in 2011 by Rogério Bertani and colleagues; it was the first Brazilian species to appear on the "Top 10 New Species" list in 2012.
Etymology: The genus name is derived from the Ancient Greek for "hairy" (lasios) and "blue" (kyanos). The species name honours Brazilian zoologist Ivan Sazima.
Appearance: They possess a deep metallic blue exoskeleton, often appearing black or grey in low light or during pre-moult. Their abdomen typically features reddish or mahogany hairs.
Size: Adults reach a leg span of approximately 12–14 cm (4.7–5.5 inches), though some sources report up to 17 cm. 
 
Natural Habitat and Ecology
Origin: Endemic to an "ecological island" in the Chapada Diamantina National Park in Bahia, Brazil.
Environment: They live in high-altitude (above 900m) rocky grasslands and savannas (campo rupestre) characterized by extreme temperature fluctuations and heavy seasonal rainfall.
Lifestyle: They are opportunistic burrowers, spending most of their time in silk-lined retreats under rocks or in self-dug burrows to regulate temperature.
Conservation: Currently considered endangered due to habitat loss and illegal smuggling for the pet trade. 
 
Captive Care for 2026
In the pet hobby, L. sazimai is considered an intermediate species due to its skittish nature. 
Enclosure: A terrestrial setup with at least 4–6 inches of moisture-retentive substrate (e.g., coconut coir) to allow for burrowing.
Conditions:
Temperature: 24°C – 29°C (75°F – 85°F) with a slight night-time drop.
Humidity: 60% – 70%. Keeping one corner of the substrate damp is generally sufficient.
Diet: Live insects such as crickets, roaches, and mealworms fed once weekly for adults.
Temperament: Generally skittish and quick to bolt. If threatened, they may kick urticating hairs or adopt a threat pose. Handling is strongly discouraged.