A very large terrestrial tarantula from northern South America that uses ground shelter and excavated retreats. Its scale makes secure footing and deep substrate especially important.
Species profile · Current resident
Theraphosa apophysis
Meet Siuzi
Siuzi is the Theraphosa apophysis currently in my care. Her portrait shows the powerful chelicerae and dense sensory hairs of one of the world’s largest tarantula genera.
Scientific nameTheraphosa apophysis
FamilyTheraphosidae
Native rangeColombia, Venezuela and Brazil
TaxonomyAccepted species
SexConfirmed female
In the wild
Natural history.
Young animals can show pinkish tones on the legs, while the adult form becomes darker and heavier. Size is impressive, but the close portraits reveal equally distinctive hairs and mouthparts.
Siuzi has a spacious terrestrial setup, deep substrate, a retreat, water, and close condition monitoring. Her documented health case remains an individual case study, not a universal diagnosis.
Taxonomy and range
Theraphosa apophysis is an accepted giant theraphosid recorded from Colombia, Venezuela, and Brazil. It was described in 1991 under Pseudotheraphosa and later transferred to Theraphosa, which explains the older combination still found in some sources.
Burrows, shelter, and activity
Adult females are associated with fossorial retreats in lowland leaf litter. Recent field work documented an adult female at a ground burrow and later climbing roughly twelve metres into a tree, an important reminder that ‘terrestrial’ describes the usual centre of life rather than a physical inability to climb.
Feeding ecology
A large-bodied ambush predator can take a wide range of invertebrate prey, and occasional vertebrate predation has been recorded in giant tarantulas. Those unusual events are natural-history observations, not a captive feeding target; appropriately sized invertebrates remain the relevant collection record.
Defence, senses, and movement
Size is only one part of the defensive system. Theraphosa can retreat, stridulate, posture, and release strongly irritating urticating hairs; the last of these makes face and eye protection during enclosure work particularly important.
In my care
Meet Siuzi.
Siuzi is the individual behind this profile. Her feeding record and the documented health case on the Introvertebrates channel create a particularly detailed personal history that sits alongside, but does not replace, verified species information.
From Instagram
Posts & reels.
From the channel
Related viewing.
Introvertebrates on YouTube
When mold grows on a tarantula: A case study with Siuzi
A detailed, individual case study documenting Siuzi and the response to an unusual health concern.
Personal observations
From the Codex.
Introvertebrates Codex
Siuzi · keeper record
A privacy-safe summary of this resident’s time in care, feeding outcomes, molts, and measurements. These are observations from the Introvertebrates collection, not species-wide averages.
Awaiting a privacy-reviewed Codex export. No invented statistics are shown.
Never published here: raw notes, record IDs, seller or breeder details, enclosure identifiers, local file paths, or exact private event dates.
Continue exploring
Related profiles.
Read further
Sources.
- World Spider Catalog — Theraphosa apophysisView the source.
- Ecology and Evolution — natural orientation and climbing observations in tarantulasView the source.