The Trinidad Chevron Tarantula (Psalmopoeus cambridgei) is a large, fast-growing arboreal spider endemic to the tropical forests of Trinidad. It is a popular species among hobbyists for its striking appearance and active hunting behavior. 
 
Appearance
Coloration: Adults typically have an olive-green or brownish fuzzy appearance.
Markings: They are named for the dark, V-shaped chevron pattern on their abdomen. They also possess distinctive bright orange flashes on the tips of their legs (metatarsi and tarsi).
Size: This is the largest species in the Psalmopoeus genus, reaching a leg span of 6–7 inches (15–18 cm).
Sexual Dimorphism: Males are often smaller, less colourful, and possess prominent "brush" hairs on their legs. 
 
Behaviour and Temperament
Defensive Nature: While they lack the irritating (urticating) hairs found on many New World tarantulas, they compensate with speed and a more potent venom. They are known to be skittish and may throw up a "threat posture" or bolt if disturbed.
Hunting: They are aggressive feeders with a high metabolism, readily taking down crickets, roaches, and even small lizards in the wild.
Webbing: As arboreal spiders, they construct elaborate silken tube retreats, often behind cork bark or within foliage. 
 
Care and Husbandry
Enclosure: Requires a vertically oriented terrarium (minimum 12x12x18 inches for adults) with plenty of climbing surfaces like cork bark and artificial plants.
Temperature: Thrives between 24–27°C (75–80°F).
Humidity: Needs moderate to high humidity (around 70–80%), maintained through regular misting and a moist substrate like coconut fibre.
Experience Level: Generally recommended for intermediate keepers due to their extreme speed and unpredictable temperament.