Keeper guide

How Fast Does Darth Maul Tarantula Grow? — Psalmopoeus victori Growth Rate

Psalmopoeus victori, commonly known as the Darth Maul Tarantula, has a fast growth rate. Young spiders usually moult more often than large juveniles and adults, but no two Darth Maul Tarantulas grow at exactly the same speed.

At a glance

Quick facts

World
New World
Origin
Mexico
Lifestyle
Arboreal
UK hobby rarity
Uncommon
Maximum size
About 12–14 cm (4.75–5.5 in)
Growth rate
Fast
Male lifespan
Roughly 3–4 years
Female lifespan
Often 10–12 years
Temperament
Quick, reactive and best treated as a hands-off species
Venom
Venomous; bites may be more consequential than those of typical beginner terrestrial species
Temperature
21–26°C
Moisture / humidity
Moderate moisture with good cross-ventilation and a water dish
CITES
Check current CITES rules before cross-border trade

How fast does it grow?

Darth Maul Tarantulas are generally described as fast growers. That gives a useful expectation for Psalmopoeus victori, but it is not a promise that every sling will reach the same size at the same age.

Adult Psalmopoeus victori reach about 12–14 cm (4.75–5.5 in). The time taken to get there depends on sex, feeding, temperature and ordinary individual variation.

Moult intervals change with age

Small Darth Maul Tarantulas often moult more frequently because they are growing rapidly. As Psalmopoeus victori gets larger, the interval between moults normally becomes longer.

Do not treat a longer interval in an older Darth Maul Tarantula as a problem by itself. Look at appetite, body condition, retreat use and the spider's previous moult pattern.

Feeding and temperature

Feeding influences how quickly Psalmopoeus victori grows, but there is no benefit in keeping the abdomen constantly overfilled. Offer suitable meals and let appetite guide the interval.

A practical temperature range for Psalmopoeus victori is 21–26°C. Stable conditions are preferable to pushing the temperature upward in an attempt to force faster growth.

Male and female growth

Male Psalmopoeus victori usually mature sooner and have a shorter lifespan of about roughly 3–4 years, while females can live 10–12 years. That difference means two similar-sized juveniles may eventually follow very different timelines.

Sex cannot be judged reliably from growth speed alone. Use a suitable moult when possible instead of assuming a faster-growing Darth Maul Tarantula must be male.

Tracking growth

Record moult dates for Psalmopoeus victori and note approximate size when rehousing. You do not need precise measurements after every moult; a simple record is enough to show whether the spider is growing steadily.

Photographs taken after a Darth Maul Tarantula has hardened can also help show changes over time, provided the spider is not disturbed simply to get a measurement.

When growth means rehousing

Rehouse a Darth Maul Tarantula when its current enclosure no longer gives enough retreat space, substrate or safe access for maintenance. Do not move Psalmopoeus victori after every moult automatically.

Prepare the larger enclosure before the transfer. The goal is to keep each stage of Psalmopoeus victori's growth in housing that is secure and practical, not to race toward the adult enclosure.