Psalmopoeus reduncus is a species for those who appreciate arboreal tarantulas for their dynamism, quick reactions and web-based hiding places. This spider thrives in vertical structures, readily builds tunnels near bark and is capable of hunting from ambush in a flash. It is voracious, active and fascinating to watch, but as befits a tree-dwelling sprinter – it can be skittish and requires a calm environment. The ideal choice after your first experiences with tarantulas, once you’ve got a feel for working with a terrarium and aren’t taken by surprise by a sudden sprint.

Detailed description of the species

Psalmopoeus reduncus is native to Central America and leads a typically arboreal lifestyle. In the wild, it makes use of cracks in the bark, cavities in the wood and spaces near tree trunks. In a terrarium, its behaviour is very straightforward: it selects a vertical piece of bark or a cork tube, wraps it in a web and creates a tunnel inside. It is this tunnel that becomes its base – the spider sits deep inside, and when it senses the movement of a prey item, it can literally ‘spring out’ and pull its prey into its hiding place in a fraction of a second.

Adult females reach a leg span of approximately 13–15 cm. Their appearance is striking, with the typical “Psalmopoeus” colouration: a darker base with lighter accents, which stands out well against bark and cobwebs. This is a species that may be less “show-stopping” on a day-to-day basis, as it often stays in its tunnel, but if you provide the right décor and give it time, its web structures can look truly stunning.

Temperament: quick and skittish. Psalmopoeus reduncus prefers to retreat to a hiding place rather than face an open confrontation, but can become agitated when stressed. For this reason, it is not a tarantula to be handled or picked up, but one best observed in a well-prepared, vertical terrarium.

Advantages of Psalmopoeus reduncus

• Vertical tree-dwelling lifestyle

  It makes excellent use of bark, cork tubes and vertical decorations. Ideal for ‘vertical’ terrariums.

• Spider’s tunnel and hideout

  He creates distinctive structures that are visually appealing and showcase natural behaviour.

• Spectacular feeding

  Watching them make quick ambushes and snatch their prey into the tunnel is great fun.

• Enjoy your meal

  This species usually has a very healthy appetite, which makes it easier to breed and raise.

• The perfect ‘next step’

  If you’ve already tried the classic ground-based variety, this strain offers a new experience and a different growing atmosphere.

Breeding conditions in practice

Terrarium:

• at least 20x20x30 cm for an adult, although a larger size would be even better,

• the most important factors are height and vertical elements,

• A vertical bark or cork tube must be securely positioned – without this, the spider will not display its full range of behaviours.

Substrate:

• 3–6 cm of coconut peat or a similar growing medium,

• The soil retains moisture, but the surface should not be constantly wet.

Humidity and ventilation:

• aim for 70–80 per cent, but with very good ventilation,

• avoid condensation on the windows and stuffiness,

• a bowl of water always available.

Feeding:

• feeders suited to the size of the spider,

• This species usually eats heartily, but reduce its food intake before moulting,

• Don’t leave large, aggressive feeders in the terrarium overnight.

Service:

• Always open the terrarium calmly and with a plan,

• use longer tweezers and tools,

• Remember, this is a fast spider – sudden movements = stress and a dash.

Who is Psalmopoeus reduncus for?

• for those who already have the basics and want to move on to tree-dwelling species,

• for breeders who enjoy spiderweb tunnels and ambush hunting,

• for those who prefer to observe spiders and their behaviour rather than come into direct contact with them.

If you’re looking for a tree-dwelling tarantula that will build a tunnel near the bark, hunt energetically and really bring a vertical dimension to your setup, Psalmopoeus reduncus is an excellent choice. Add it to your basket, prepare a stable vertical hiding place and ensure good ventilation, and you’ll have a species capable of turning an ordinary terrarium into a small arena of fast-paced action.

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