Borneo Neon Blue-Leg Tarantula (Birupes simoroxigorum) 

Among the tarantulas for sale at The Defiant Forest, the Borneo Neon Blue-Leg Tarantula (Birupes simoroxigorum) is one of the most spectacular and sought-after tarantulas in the hobby. Famous for its intense electric blue legs and dark contrasting body, this rare arboreal species has quickly gained legendary status among tarantula enthusiasts and collectors.

Discovered relatively recently in the rainforests of Borneo, the Borneo Neon Blue-Leg Tarantula belongs to a group of fast-moving Old World tarantulas that inhabit tree cavities and forest vegetation. Its brilliant coloration and elegant arboreal body structure make Birupes simoroxigorum one of the most visually striking tarantulas ever introduced into the hobby.

Because of its speed and defensive tendencies typical of Old World arboreal species, this tarantula is generally recommended for experienced keepers.

Species Overview

Scientific Name: Birupes simoroxigorum
Common Name: Borneo Neon Blue-Leg Tarantula
Type: Arboreal (tree-dwelling species)
Origin: Borneo, Southeast Asia
Adult Leg Span: 5–6 inches
Temperament: Fast and defensive
Growth Rate: Moderate
Lifespan: Females 12–15+ years, males shorter

Natural History

In the wild, Birupes simoroxigorum inhabits tropical rainforest environments in Borneo where it spends most of its life in trees. These tarantulas build silk retreats inside hollow branches, bark crevices, and natural tree cavities.

The Borneo Neon Blue-Leg Tarantula typically remains hidden within these silk-lined retreats during the day, emerging at night to hunt insects and other small prey. The humid rainforest environment of Borneo provides warm temperatures, dense vegetation, and high humidity levels that should be replicated in captivity.

Like many Old World arboreal tarantulas, this species relies on speed and agility rather than defensive hairs for protection.

Appearance

The Borneo Neon Blue-Leg Tarantula is admired for its breathtaking coloration.

Typical features include:

• brilliant neon blue legs

• dark carapace and abdomen providing strong contrast

• long slender legs adapted for climbing

• elegant arboreal body structure

The vivid blue coloration becomes especially intense after molting, making freshly molted individuals particularly impressive.

Collectors interested in other Blue species:

• Gooty Sapphire Ornamental Tarantula (Poecilotheria metallica)

• Brazilian Blue Tarantula (Pterinopelma sazimai)

• Socotra Island Blue Baboon Tarantula (Monocentropus balfouri)

• Sabah Blue Earth Tiger Tarantula (Phormingochilus sp.)

Temperament

Birupes simoroxigorum is an extremely fast and alert species typical of Old World arboreal tarantulas. When disturbed, it will usually retreat rapidly into its webbed hide or move quickly across vertical surfaces.

Because this species lacks urticating hairs, it may rely on defensive behavior if heavily provoked. For this reason, the Borneo Neon Blue-Leg Tarantula is best suited for keepers experienced with fast-moving arboreal species.

Enclosure Setup

As an arboreal species, the Borneo Neon Blue-Leg Tarantula requires a tall enclosure that provides vertical climbing space.

A suitable enclosure should include:

• vertical cork bark or hollow wood for retreats

• moderate to high humidity

• excellent ventilation

• anchor points for webbing

• a shallow water dish

Providing vertical structures allows the tarantula to construct silk retreats similar to those found in tree cavities in its natural habitat.

Feeding

Like most tarantulas, Birupes simoroxigorum feeds primarily on insects such as crickets, roaches, and other appropriately sized feeder insects.

Juveniles may be fed once or twice per week, while adult specimens typically feed every 7–14 days depending on size and feeding response.

This species is known for its fast feeding strikes and strong hunting response.

Molting and Growth

Tarantulas grow through a process known as molting, where they shed their old exoskeleton and emerge slightly larger.

Prior to molting, the spider may refuse food and remain inside its retreat. After molting, the tarantula should be left undisturbed while its new exoskeleton and fangs harden.

Following molts, the bright blue coloration of Birupes simoroxigorum often becomes even more vivid.

Why Keep the Borneo Neon Blue-Leg Tarantula?

The Borneo Neon Blue-Leg Tarantula (Birupes simoroxigorum) is highly prized among tarantula collectors for several reasons:

• breathtaking neon blue leg coloration

• rare and recently described species

• elegant arboreal body structure

• fascinating climbing and webbing behavior

For experienced keepers seeking one of the most visually impressive tarantulas in the hobby, the Borneo Neon Blue-Leg Tarantula is an extraordinary addition to any tarantula collection.

Learn More About Tarantula Care

If you're new to keeping tarantulas, see our complete Tarantula Care Guide to learn about enclosure setup, feeding schedules, molting, and species selection.

You can also browse our full selection of Tarantulas for Sale to discover other fascinating tarantula species available at The Defiant Forest.