Species profile

Psednocnemis brachyramosa Care Guide

Psednocnemis brachyramosa, usually known in the hobby as the Malay Purple Femur, is an Old World fossorial tarantula from Peninsular Malaysia. Adults reach around 12–14 cm and growth is moderate. Good care comes down to matching the enclosure to the species' natural lifestyle, keeping fresh water available and making small adjustments from what the spider actually does.

Common names: Malay Purple Femur, Malaysian Purple Femur

Older / hobby names: Coremiocnemis brachyramosa

Psednocnemis brachyramosa
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At a glance

Quick facts

World
Old World
Origin
Peninsular Malaysia
Lifestyle
Fossorial
UK hobby rarity
Rare
Maximum size
Around 12–14 cm
Growth rate
Moderate
Male lifespan
Around 3–4 years
Female lifespan
Around 10–12 years
Temperament
Secretive, fast and defensive when uncovered
Venom
Old World venom may be medically significant; bites should receive medical assessment
Temperature
22–27 °C; stable warmth and ventilation
Moisture / humidity
Deep substrate with a moderately moisture-retentive lower layer, drying surface and water
CITES
Not CITES-listed
Lifestyle note
A Malaysian burrower transferred from Coremiocnemis to Psednocnemis; deep substrate and secure access are central to care.

What to expect

Malay Purple Femurs come from Peninsular Malaysia and are kept as fossorial tarantulas. Adults reach around 12–14 cm, with moderate growth. In the UK hobby, the species is currently best described as rare.

Do not expect every Malay Purple Femur to behave identically. Appetite, retreat use, webbing and confidence in the open can vary between individuals, so use the species' normal lifestyle as a guide and adjust to the behaviour of the individual spider.

Enclosure setup

Malay Purple Femurs are fossorial, so deep, compactable substrate is more important than a large open floor. Give the spider enough depth to build a stable burrow, with a piece of cork or a starter tunnel if you want to give it an obvious place to begin.

Once a Malay Purple Femur has established a burrow, leave it alone unless there is a genuine husbandry problem. Moved soil, webbing around the entrance and long periods out of sight are normal for a fossorial tarantula.

Temperature and room placement

A practical temperature range for Psednocnemis brachyramosa is 22–27 °C; stable warmth and ventilation. Stable room conditions are more useful than chasing a precise number every hour. Check the shelf where the enclosure actually sits, especially during very warm weather and through winter.

For Psednocnemis brachyramosa, keep the enclosure away from direct sunlight, radiators and electronics that create local hot spots. Do not attach a heat mat directly to the enclosure; if the room is genuinely too cold, warming the room is easier to control than creating one concentrated hot surface.

Moisture, water and ventilation

For Malay Purple Femurs, the moisture approach is straightforward. Use deep substrate with a moderately moisture-retentive lower layer, drying surface and water. You do not need every part of the substrate to be equally wet, and persistent condensation or a stale smell usually means the enclosure is staying too damp.

Keep a clean water dish available for Psednocnemis brachyramosa once the spider is large enough to use one safely. Smaller juvenile enclosures can dry faster than adult setups, so adjust how often you add water to the actual drying rate rather than following a fixed calendar.

Feeding

Feed Malay Purple Femurs according to their size, appetite and abdomen rather than a fixed weekly schedule. Use established feeder insects that the spider can overpower without a long struggle, and remove live prey if it is ignored.

Young spiders usually eat more regularly while they are growing. Adults can go much longer between meals. If Psednocnemis brachyramosa begins refusing prey and spends more time hidden, premoult is one of the first normal explanations to consider.

Growth and moulting

Growth in Psednocnemis brachyramosa is moderate. Young Malay Purple Femurs generally moult more often than large juveniles and adults, and appetite often changes as a moult approaches.

During premoult in Psednocnemis brachyramosa, remove live prey and keep fresh water available. After a moult, leave the spider undisturbed until the new exoskeleton has hardened and the fangs have darkened before offering food again.

Temperament and safe maintenance

Malay Purple Femurs should be treated as hands-off animals. Use long tools for maintenance, keep a catch cup ready when rehousing and assume the spider may move quickly when the enclosure is opened.

Do not use handling as part of routine care. With an Old World species such as Psednocnemis brachyramosa, good enclosure design matters because it lets you refill water, remove leftovers and carry out maintenance without forcing close contact.

Male and female lifespan

Male Psednocnemis brachyramosa are generally expected to live around 3–4 years, while females can live 10–12 years. These are broad captive ranges, not exact lifespans, and individual growth history can shift maturity earlier or later.

Female Psednocnemis brachyramosa continue moulting after maturity. A mature male eventually reaches his ultimate moult and may become more active around the enclosure while feeding less often. Keep moult dates if you want a clearer picture of age, growth and sex over time.

UK availability and naming

In the UK hobby, Malay Purple Femurs are currently classed as rare. Availability can change quickly between specialist stock lists, captive-produced batches and show weekends, so treat that label as a guide rather than a promise that a particular size or sex will always be easy to find.

Older hobby material may use the name Coremiocnemis brachyramosa. Keep older labels in your records if they came with the animal, but use Psednocnemis brachyramosa when checking current husbandry or taxonomy.

Long-term care

Long-term care for Psednocnemis brachyramosa is mostly about consistency. Keep the enclosure secure, maintain fresh water, feed sensibly, respect the spider's retreat and make changes only when the setup stops working for the animal.

Rehouse a Malay Purple Femur when the existing enclosure has genuinely become cramped or awkward to maintain, not simply because the spider touches the walls. Prepare the new enclosure completely before moving the spider so the transfer itself can be kept short and controlled.