Costa Rican Orange Mouth (Psalmopoeus reduncus)

Native to the tropical forests of Costa Rica, Psalmopoeus reduncus is a striking arboreal tarantula known for its orange mouthparts and feisty temperament. Small but fast-growing, this species is often considered the “starter” Old World-style arboreal — even though it’s a New World species (without urticating hairs).

Quick Facts

Common Name: Costa Rican Orange Mouth

Scientific Name: Psalmopoeus reduncus

Origin: Costa Rica

Size: 4.5–5.5 inches (11–14 cm) leg span

Lifespan:

• Females: 10–12 years
• Males: 3–4 years

Temperament: Fast, bold, defensive when disturbed — not for handling

Coloration

Dark olive to chocolate brown body

Bright orange chelicerae (mouth area) — gives it the “Orange Mouth” name

Subtle greenish or bronze highlights on legs and carapace

Juveniles are lighter with orange hues that darken as they mature

Housing & Care

Enclosure Type: Arboreal — tall enclosure with climbing space

Substrate: 2–4 inches of moist substrate (coco fiber/topsoil mix)

Humidity: 70–80%

Temperature: 74–80°F (23–27°C)

Decor:

• Vertical cork bark tube or hollow log for retreat
• Branches and foliage for webbing and climbing
• Water dish near base

This species loves to web heavily inside its cork tube — expect a fortress of silk.

Feeding

Diet: Crickets, roaches, locusts, and mealworms

Feeding Schedule:

• Slings: 2–3x/week
• Juveniles: Weekly
• Adults: Every 10–14 days

Very enthusiastic feeders — lightning-fast strikes

Why Keep One?

Vivid orange mouthparts — a truly unique feature

Fast-growing and hardy

Excellent “intermediate” arboreal species before moving to Old Worlds

Webs beautifully and is often visible at night

Notes

Fast and defensive — will bolt rather than flick hairs

No urticating hairs; relies on speed and threat postures for defense

Not for handling or beginners

Keep secure — quick escape artists