Central American Giant Tailless Whipspiders (Phrynus whitei)

Central American Giant Tailless Whipspiders (Phrynus whitei) — Introduction & Overview

Meet the Central American Giant Tailless Whipspider (Phrynus whitei), the living embodiment of “did my enclosure just grow a boss fight?” These amblypygids look like flat, two-dimensional crab-spiders with absurdly long “whip” legs they use as sensory antennae, and spiky raptorial arms for lightning-fast prey grabs. By day, they press themselves into impossibly thin crevices; by night, they unfold into an elegant, alien silhouette, gently sweeping the air like a living radar dish. For MYCO-EMPORIUMS and Myco-EMPers who love weird, gentle, high-intel arthropods, this species is all about eerie motion, quiet drama, and deep respect.

Why Keep This Species

  • Iconic “horror movie” profile that clings to vertical bark and moves with slow, deliberate, alien grace.
  • Relatively hardy once dialed in, with simple feeding needs and low mess, as long as humidity and hides stay on point.
  • Fantastic for teaching real arthropod behavior, sensory biology, and nocturnal hunting without relying on venom or aggression.

Keeper Profile

  • Best for Intermediate Myco-EMPers comfortable managing humidity, microclimates, and hands-off display invertebrates.
  • Handling expectations: strictly hands-off; use catch cups and tools only, never bare-handed “bonding sessions”.
  • Microclimate vibe: cool to mildly warm (around low- to mid-70s °F) with high humidity and strong vertical climbing and hiding options.

Keeper’s Summary

A single Central American Giant Tailless Whipspider (Phrynus whitei) thrives in a tall, well-ventilated enclosure with plenty of vertical cork bark, narrow crevices, and a moist, stable microclimate. Think: at least 12" tall with deep, slightly damp substrate, constant access to a shallow water dish, and humidity in the “jungle night” zone. Feed appropriate-sized crickets or roaches about once a week, and keep the experience strictly observe-don’t-handle. Pro tip: give them multiple stacked cork flats forming tight wedges; once they feel that “pressed on both sides” safety, they’ll relax and reward you with glorious late-night patrols under a dim red light.

🐾 Central American Giant Tailless Whipspider — Phrynus whitei

  • Common Name(s): Central American Giant Tailless Whipspider, Giant Tailless Whip Spider, Giant Amblypygid
  • Scientific Name: Phrynus whitei
  • Native To: Humid forests, caves, and rock/wood crevices in Central America (e.g., Costa Rica, Nicaragua, Honduras and surrounding regions)
  • Adult Size: Body length roughly 1–1.5" (2.5–3.5 cm); leg span commonly 4–6" (10–15 cm), with first pair of “whip” legs extending even farther
  • Life Span: Typically 5–10+ years in captivity with proper conditions; females often outlive males
  • Difficulty: Intermediate; humidity-sensitive, shy, and strictly display-only, but robust once the environment is dialed in



Characteristics & Temperament

Central American Giant Tailless Whipspiders (Phrynus whitei) live their best sitcom life as shy, nocturnal wall-ninjas. By daylight they flatten into bark crevices like living paper; after dark, they unfold and sweep their hypersensitive whip-legs in eerie, radar-like arcs. When an EMPORIUM walks by, they switch to “freeze-frame mode” or “crab-walk hyperspeed” depending on mood. Once settled, they patrol their bark highways with slow, alien elegance.

Appearance

Coloration: Dark chocolate to soot-black with leg joint highlights and faint banding.
Body Form: Ultra-flattened, disc-like body; long sideways legs; oversized raptorial pedipalps.
UV Reaction: No fluorescence—matte, shadow-creature aesthetic under blacklight.

Temperament

Personality: Shy, evasive, highly sensitive to touch and airflow.
Activity: Nocturnal/crepuscular; prime time is lights-off.
Feeding: Ambush/opportunistic—rapid pedipalp strikes.

Social Housing

Solitary for all standard Myco-EMPers. Communal attempts require huge spaces and still risk stress or cannibalism.

Quick Traits

UV Responsive: No — matte shadowform Activity: Medium–High at night Social: Solitary (experimental communal only for experts) Handling: Observe-Not-Disturb / Gentle Grip, No Slip

Keeper Notes

  • Stress signs: staying low on substrate, hiding nonstop, frantic pacing, repeated prey drops, dehydration wrinkles.
  • Confidence tips: vertical hides, stable humidity, low traffic, dim lighting, cool cave ambience.
  • Display advice: textured cork walls = visible night patrols without stressing your LIVE SPECIMEN.

Care Requirements

Core setup and environmental targets to keep [Scientific Name] thriving. Replace the bracketed fields with accurate species values.

Enclosure Setup

Type: [Arboreal/Terrestrial/Burrowing/Paludarium].
Minimum Size: [Tank dimensions or gallons].
Safety: Secure lid/locking front; cross-ventilation; cable-managed heat sources.

  • Size: [e.g., 18″×18″×18″ / 20L]
  • Lid: [Secure mesh / locking front]
  • Hides: [Cork rounds / slabs / leaf litter / rock caves]
  • Enrichment: [Branches / bark / anchor points / clutter]

Substrate

Blend: [Soil/moss/sand/clay mix].
Depth: [Depth].
Purpose: [Burrowing / humidity buffering / traction].

Habitat

  • Water: [Dish / misting / drip — safety notes]
  • Décor: [Logs / cork / plants / rocks / climbing structures]
  • Behavior Fit: [Climber/Burrower/Web-builder/etc.]

Environment Targets Set & Monitor

Temp: [°F/°C]
Aim for [low–high °F] with a soft night dip.
Humidity: [%]
Maintain [min–max %RH] with airflow.

Lighting

[Ambient only / UVB optional / UVB recommended] with a [12L:12D] cycle.

Food & Water

  • Juveniles: [Prey size + frequency]
  • Adults: [Prey size/variety + schedule]
  • Hydration: [Water dish / misting / droplets]
  • Best Feeding Time: [Night/Dusk/etc.]

Cleaning

  • Spot Clean: Remove prey, waste, mold.
  • Deep Clean: Change substrate every [X] months.
Safety: Use tools (tongs/cups). Avoid direct handling unless species allows it.
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