Scientific name

Porcellio magnificus

Schmalfuss recognises Porcellio magnificus Dollfus, 1892 as a species and associates the former name Porcellio hoffmannseggi magnificus with it. [1]

Origin

The catalogue places this species in the Almería region of south-eastern Spain. [1] This does not prove its presence throughout the Iberian Peninsula.

  • Large Porcellio
  • Almería
  • Elongated uropods

Distribution and nomenclature from the natural history catalogue; commercial keeping explicitly attributed. Dimensions including appendages remain separate from body dimensions; no validated breeding protocol.

At a glance

A species from the Almería region, distinct from Porcellio hoffmannseggii. The long uropods explain some of the large dimensions stated [1][2].

DOCUMENTED SIZE25–30 mm stated
Another measurement >55 mm with uropods; different methods [2][3].
LIFESPANTo be documented
No supported individual lifespan in the selected sources.
LIFESTYLETerrestrial
Does not roll into a ball according to the commercial guide [3].

Adult size

Scuttle & Squeak describes adults of 25–30 mm or more. Richard’s Inverts gives over 55 mm for some old males including the uropods: the measurement method differs. [2][3]

Lifespan

No numerical lifespan retained: the sources accessed do not present individual follow-up from which to establish it.

Lifestyle

Scuttle & Squeak describes a terrestrial animal with a broad body, unable to roll into a ball. [3]

Housing

SETUP AND SHELTERS

Ventilated box — Leaves and bark, one moist end and a less-moist remainder in the Scuttle & Squeak guide [3].

Scuttle & Squeak proposes a ventilated box with leaves and bark, one end of which remains moist while the rest is less moist. [3]

Care parameters

BREEDER REFERENCE

18–26 °C — Richard’s Inverts practice, not physiological limits [2].

ANOTHER PRACTICE

20–25 °C — Scuttle & Squeak; a distinct commercial reference point [3].

Humidity

Localised shelter — Scuttle & Squeak maintains a moist shelter and advises against uniformly waterlogged soil [3].

Temperature

18–26 °C at Richard’s Inverts [2] Scuttle & Squeak proposes 20–25 °C. These are two captive reference points, not measured physiological limits. [3]

Ventilation

Sustained air circulation [2] The recommendation for a less-moist environment concerns the keeper’s husbandry; it does not mean an entirely dried-out substrate.

Feeding

DIET AND CALCIUM

Leaves and decomposed wood, a calcium source and supplements in the commercial guides; no experimental ration retained [2][3].

Scope of this profile

Distribution and nomenclature from the natural history catalogue; commercial keeping explicitly attributed. Dimensions including appendages remain separate from body dimensions; no validated breeding protocol.

Appendages that change the comparison

The long uropods of older males explain part of the spectacular dimensions stated by Richard’s Inverts. [2] Separating body length from total length avoids a false difference between a profile stating a few centimetres and an advert giving a much larger figure. A sale size does not, by itself, indicate the animal’s exact age.

Base diet and supplements

Richard’s Inverts describes consumption of dead leaves and decomposed wood, with a calcium source and fish food. [2]

Scuttle & Squeak also proposes vegetables and protein, with fresh leftovers removed. [3]

These commercial menus do not constitute an experimentally validated nutritional formula.

Providing several conditions within one box

Scuttle & Squeak recommends a moist refuge and advises against uniformly waterlogged soil. [3]

Moisture beneath a shelter and humidity in the air describe distinct environments: a single measurement does not replace checking the gradient.

Breeding: observations, not a production yield

Scuttle & Squeak reports moderate colony growth and eggs carried in a marsupium, the brood pouch. [3]

This commercial account does not provide data from which to calculate production. No number of juveniles by a given date is promised.

What prior experience?

Richard’s Inverts rates keeping as difficult, compared with intermediate at Scuttle & Squeak. [2][3]

These assessments are not standardised scores. Ask for the colony’s previous conditions and check that the setup can reproduce them before acquisition.

Checklist

  • Ask for traceable provenance.
  • Compare sizes measured in the same way.
  • Provide a moist refuge and a less-moist area.

Observations to record

  • Maintaining the gradient
  • Replenishing leaves
  • Young observed

The app provides individual animal records. Check which features are available for your animal in the released version.

Sources

Document-based overview; not a substitute for veterinary advice.

  1. Schmalfuss — World catalog of terrestrial isopods, entrées P. magnificus et P. hoffmannseggi magnificus
    Source accessed
  2. Richard’s Inverts — Giant Magnificent Isopod, Porcellio magnificus
    Source accessed
  3. Scuttle & Squeak — Porcellio magnificus, guide de maintien
    Source accessed