Triangular-Front Woodlouse

Geographical Origin and Habitat: Endemic to the island of Corfu (Ionian Islands, Greece) and the western Peloponnese. It inhabits dry rocky slopes, sun-exposed screes, and limestone crevices in typical Mediterranean environments characterized by high ventilation and low summer rainfall, where it finds shelter from extreme aridity.

Taxonomy and Genetics: It is a terrestrial isopod crustacean belonging to the family Armadillidiidae. Characterized by a wide, slightly flattened body (known as the 'skirted' type). It is distinguished by the prominent and distinctly triangular scutellum (the frontal plate of the head), from which the specific name frontetriangulum derives.

Behavior and Habits: Predominantly nocturnal and shy species. During the day it shelters deep under flat limestone rocks or in dry soil to avoid dehydration. It has rather slow movements and is inclined to roll up (volvation) if disturbed, although its flattened morphology makes the closure less spherical than other species.

Morphology: Dusty-grey or clay-grey carapace, often decorated with patches or longitudinal stripes of yellow-ochre or cream, arranged in neat rows along the dorsal segments. It reaches a maximum size of approximately 1.8 centimeters. There is no clear external sexual dimorphism, except for slight differences in the structure of the pleopods in adult males.

Terrarium Setup: Requires a well-ventilated terrarium with mesh walls or generous cross-ventilation holes to prevent air stagnation. The ideal substrate consists of a mix of clayey soil and sand, enriched with fragments of limestone rock, bark, and an abundant surface layer of dry leaves (preferably oak or beech) which serve as both food and shelter.

Lighting and Heating: Keep at moderate room temperature, optimal between 23 and 26 °C (73-79 °F). Does not require specific lighting systems; indirect daylight is sufficient. Absolutely avoid direct heat sources or heating lamps that could excessively dry out the air in the terrarium.

Humidity and Hydration: Xerophilic species requiring a predominantly dry environment. The relative humidity must be kept low, between 30% and 50%. It is essential that approximately 80-90% of the substrate remains completely dry, leaving only a small damp area (about 10-20% of the surface) covered with constantly moist sphagnum moss. Excessive humidity and condensation are fatal.

Feeding and Supplementation: Feeds mainly on dry leaves and rotting wood, which must always be present. Supplement the diet with a constant source of calcium (cuttlebone or powdered limestone) essential for molting and the strength of the carapace, and with occasional protein inputs (such as fish flake food, gammarus, or brewer's yeast) to stimulate reproduction.

Compatibility: Breeding in species-only terrariums is highly recommended. Having rather slow growth and reproduction rates, it easily suffers competition from more prolific isopods or predators. It is not suitable as a bioactive cleaner for humid tropical terrariums.

Health and Common Diseases: The main risks are related to humidity stagnation and poor ventilation, which cause bacterial or fungal infections of the carapace (mycosis) and high mortality during molting. An environment that is too dry can likewise cause death from dehydration if the moist corner is missing.