Xenesthis sp. “Bright”
This one’s a stunner. Xenesthis sp. “Bright” is a large, vivid, heavy-bodied tarantula from Colombia with a bold contrast of dark velvety legs and a brilliant copper-toned carapace. The kind of spider you remember. These are not just big—they’re captivating.
Care Details
- Temperature: 72°F to 78°F is ideal. Avoid higher temps—this species prefers it slightly cooler than most.
- Humidity: Aim for 75–80%. I lightly moisten one side of the enclosure and let the other stay dry. This balance works well.
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Housing:
- Category: Terrestrial
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Babies: A 1 oz to 4 oz deli container with needle-poked ventilation works perfectly.
– I offer free containers at checkout, but you must request it during checkout. If you don’t ask, it will not be included. - Juveniles/Sub-adults: A small enclosure that’s 2–3x the spider’s leg span.
- Adults: A large terrestrial setup with deep substrate (at least 4 inches). These aren’t heavy burrowers, but they do like to feel secure and will move substrate around.
Diet
I give mine a steady rotation of crickets and roaches—Dubia, red runners, hissers. For slings, tiny crickets or pre-killed baby roaches are perfect.
If you can’t find prey small enough, crush the head and leave it inside—your tarantula will know what to do.
Always remove uneaten food after 24 hours to prevent mold.
You can offer a pinky mouse or feeder lizard every now and then as a high-protein treat—but don’t overdo it. Too much calcium can lead to compaction and digestive issues.
In-Depth Facts
- Latin name: Xenesthis sp. “Bright”
- Common name: Xenesthis Bright, Bright Xenesthis
- Locale: Colombia—specific locality not confirmed, but believed to be from central to southwestern regions
- Category: Terrestrial, moderate webber, not fossorial—though it may dig shallow scrapes or rearrange substrate
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Size:
- Females: 8 to 9 inches
- Males: 6 to 7 inches
- Urticating hairs: Yes—but very reluctant to use unless provoked
- Growth rate: Fast, especially if kept at the higher end of their preferred temp range and well-fed
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Lifespan:
- Females: 15+ years
- Males: Around 3–4 years
- Recommended for: Keepers who enjoy large, exotic New Worlds. Perfect for fans of Pamphobeteus, Theraphosa, or Sericopelma.
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Safety Disclaimer
Experiencing a tarantula bite is an extremely rare occurrence, and it's important to note that there have been no recorded fatalities due to a tarantula bite. The venom potency varies across species, with Old World tarantulas generally having stronger venom than their New World counterparts. Within the Old World category, the Poecilotheria genus is known for having particularly potent venom.
It's crucial to approach tarantulas with respect and understanding. If you happen to get bitten, which is unlikely, the key is to stay calm. In most cases, the discomfort is superficial and subsides within a few minutes to a few hours. However, bites from species with more potent venom may result in symptoms lasting up to a week. Remember, larger tarantulas tend to have more venom than smaller ones.
Please be aware that I cannot assume responsibility for bites. Tarantula handling should be done at your own risk. In my 11 years of experience with these creatures, I have only been bitten once, by a species with highly potent venom. While the experience was painful, the symptoms had completely disappeared after a week.
Handle tarantulas responsibly, and always prioritize your safety and the well-being of the tarantula.