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Venezuelan Suntiger

Psalmopoeus irminia

The leaping shadow of the jungle. A breathtakingly gorgeous, sleek arboreal tarantula fiercely contrasting deep velvety black against brilliant neon-orange tiger stripes (chevrons) and vibrant bright-orange 'socks'. Highly coveted for its beauty but deeply respected and feared for its explosive teleporting speed, lack of urticating hairs, and wildly defensive, heavily venomous attitude. A strict 'look but do not touch' species for experienced keepers.

Family
Theraphosidae
Origin
Venezuela e Guyana (Foreste pluviali)
Origin
Amazon, Orinoco, and Guianas
Tank use
Used in 0 tanks

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Species challenges
Temperature

24 °C - 28 °C

pH

n/a

Water type

Freshwater

Humidity

70 % - 85 %

Substrate depth

8 cm

Description

Geographical Origin and Habitat: A heavily specialized, strictly arboreal species natively dominating the incredibly dense, dripping wet tropical rainforests and humid jungle canopies stretching across Venezuela and Guyana. They survive the brutal jungle predators by retreating high up into towering vertical tree crevices, deep hollows, or massive bromeliad leaves, meticulously constructing elaborate 'dirt curtains' (thick silk heavily camouflaged with woven mud and chewed bark) to perfectly disguise the entrance to their aerial fortress.

Taxonomy and Genetics: Theraphosidae family, commanding the beautifully aggressive *Psalmopoeus* genus. Together with its sister genera (*Tapinauchenius* and *Ephebopus*), it represents a profound, highly dangerous biological anomaly for New World (American) tarantulas: they possess absolutely zero urticating (itchy) hairs on their abdomens. Evolutionarily compensating for this lack of ranged defense, they developed extremely potent, medically significant neurotoxic venom, terrifying, blinding teleportation speed, and an incredibly irritable, fiercely confrontational 'Old World' attitude.

Behavior and Habits: An absolute lightning-fast, highly explosive, shadowy assassin. Strictly photophobic (hating bright light) and deeply nocturnal, they will spend the entire daylight completely hermetically sealed inside their dark dirt-curtain tube. Under the cover of total darkness, they will sit menacingly at the dark portal entrance, waiting to ambush. Their temperament is famously, fiercely defensive and highly high-strung: if suddenly disturbed or cornered without a secure retreat, they will violently explode upwards into a terrifying 'threat pose', audibly hiss (stridulate), and deliver lightning-fast, aggressive repeated strikes (multi-strikes) while frequently executing massive, unpredictable leaps straight into the air.

Morphology and Sexual Dimorphism: Visually, an absolute, breathtaking masterpiece of dark, dangerous beauty. The massive, thick-legged adult females (comfortably reaching a heavy, long 5.5 to 6-inch / 14-16 cm arboreal leg-span) are heavily coated in a solid, deep, dense velvety pitch-black. The tips of their massive legs glow with blinding, bright neon-orange 'socks' (flashes), while the entire abdomen is violently striped in a glowing, highly vibrant orange tiger zig-zag (chevron) pattern. Upon reaching ultimate maturity, adult males undergo a tragic, complete aesthetic wipeout: they brutally lose all their stunning black and orange contrasting beauty, morphing completely into a faded, spindly, dull, dusty-grey, unrecognizable, skinny shadow frantically seeking a mate before exhausting themselves and dying rapidly.

Care and observations

Terrarium Setup: An uncompromising, strictly vertical, towering arboreal enclosure setup (absolute minimum 8x8x16 inches, ideally 12x12x18 inches / 30x30x45 cm for an adult female). The ground substrate is nearly irrelevant to the arboreal spider, serving purely as a heavily crucial humidity-holding reservoir (provide 3-4 inches / 8-10 cm of deeply moist coco coir mixed with damp sphagnum moss). The absolute critical life-support feature is heavily anchoring massive, extremely tall, hollow cork bark tubes or thick vertical wooden slabs securely upright against the glass, offering the spider a high, dark, elevated vertical crevice to construct its massive dirt-curtain silk funnel. Glue or heavily magnetize a small, elevated water dish high up on the glass walls, allowing the proud arboreal queen to drink safely in the clean canopy without ever stepping on the dirty ground.

Lighting and Heating: Lovers of the deeply shaded, oppressively hot, suffocating Venezuelan tropical rainforest. They will violently panic, blindly fleeing from harsh, bright, direct incandescent heat lamps that lethally bake them alive trapped inside their silk tubes. They absolutely thrive at highly stable, wonderfully warm tropical temperatures firmly hovering between 77-82°F (25-28°C), while effortlessly enduring normal winter apartment nighttime drops down to 68°F (20°C). Any supplementary heat MUST strictly be provided via side-mounted, highly controlled, gentle radiant heat pads.

Humidity and Hydration: They strictly require the incredibly high, warm humidity of the dense South American jungle, heavily demanding an ambient environment hovering securely between 75-85%, BUT they are instantly, lethally susceptible to stagnant, fetid, suffocating swamp air. You MUST provide 'clean, heavily ventilated moisture'. Keep the very bottom, deep substrate heavily damp and dark-wet, while strictly guaranteeing massive, wide-open top mesh airflow to brutally combat and entirely eradicate the horrifying, fast-spreading, suffocating lethal white molds and deadly fungal respiratory infections that quickly rot their lungs. Lightly mist the web and high glass occasionally.

Feeding and Supplementation: Insanely fast, highly acrobatic, violently explosive ambush demons. They hunt by dangling or waiting silently, detecting the aerodynamic vibrations of passing prey, then violently exploding outward in a chaotic blur, frequently leaping aggressively through the air, injecting potent paralyzing venom, and dragging the heavily struggling prey brutally back into the high dark hollow. Feed a fully grown, massive adult female exactly ONE huge adult Dubia roach or heavy locust strictly delivered via very long feeding tongs exactly once every 14 days to prevent massive, lethally morbid abdominal obesity, which would cause the massive heavy spider to heavily fall and violently burst its fragile abdomen on the dirt below. Use very long tongs to furiously extract all ignored, discarded, sucked-dry insect bolus garbage within 24 hours to eradicate deadly red mite plagues.

Handling and Safety: ABSOLUTE, UNCOMPROMISING, CRIMINAL PROHIBITION OF FREE-HANDLING. They do NOT possess warning itchy hairs; their primary defense is a MEDICALLY SIGNIFICANT, highly venomous bite. A bite will instantly inject potent neurotoxins causing severe, agonizing, burning pain, heavy sweating, racing heart palpitations, and deep, radiating, crippling muscle cramps and skeletal spasms lasting for days or weeks. If cornered, they will violently rear up into a terrifying 'threat pose', hiss loudly (stridulation), and aggressively strike with massive fangs. Their teleporting, ballistic speed and unpredictable jumping ability are impossible for human reflexes to catch. All rehousing MUST be meticulously, nervously planned using heavy-duty, very long forceps (12-inch tongs), large clear plastic catch-cups, and extreme, unwavering calm respect from an advanced, highly experienced keeper.

Terrestrial invertebrate profile

Diet
Carnivoro
Humidity
70 % - 85 %
Temperature
26 °C
Sociality
Solitario
Venom level
HighlyVenomous
Substrate depth
8 cm

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.