What to expect
Costa Rican Orange Mouths come from Costa Rica and are kept as arboreal tarantulas. Adults reach about 13–15 cm (5–6 in), with fast growth. In the UK hobby, the species is currently best described as uncommon.
Do not expect every Costa Rican Orange Mouth 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
Costa Rican Orange Mouths are arboreal, so the enclosure should provide useful height, an upright cork retreat and several places for webbing to attach. A tall empty box is not enough; the spider needs structure in the upper half of the enclosure and a retreat it can settle into.
For juveniles, scale the enclosure to the spider rather than the eventual adult size. As Psalmopoeus reduncus grows, increase the enclosure height and the room around the retreat while keeping the water dish and door easy to reach without tearing through the main web.
Temperature and room placement
A practical temperature range for Psalmopoeus reduncus is 22–27°C. 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 Psalmopoeus reduncus, 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 Costa Rican Orange Mouths, the moisture approach is straightforward. Maintain moderate moisture with strong ventilation and a water dish. 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 Psalmopoeus reduncus 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 Costa Rican Orange Mouths 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 Psalmopoeus reduncus begins refusing prey and spends more time hidden, premoult is one of the first normal explanations to consider.
Growth and moulting
Growth in Psalmopoeus reduncus is fast. Young Costa Rican Orange Mouths generally moult more often than large juveniles and adults, and appetite often changes as a moult approaches.
During premoult in Psalmopoeus reduncus, 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
Individual Costa Rican Orange Mouths vary in how they respond to disturbance, so work around the behaviour of the spider you actually keep. Use long tools when useful and have a catch cup ready for rehousing.
Handling is unnecessary for routine care. Even a normally steady Costa Rican Orange Mouth can react quickly to vibration or a sudden movement, and keeping the spider inside a secure enclosure is safer for both keeper and animal.
Male and female lifespan
Male Psalmopoeus reduncus are generally expected to live roughly 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 Psalmopoeus reduncus 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, Costa Rican Orange Mouths are currently classed as uncommon. 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.
When buying a Costa Rican Orange Mouth, confirm the scientific name as well as the common name. Common names can be reused or changed in the hobby, while Psalmopoeus reduncus is the more reliable identifier for care records and future reference.
Long-term care
Long-term care for Psalmopoeus reduncus 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 Costa Rican Orange Mouth 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.