Proporcellio vulcanius

Differs from congeneric species by subtle morphological characters of the male pleopods, particularly the structure of the first and second pleopods used in copulation. Distinguished from the common genus Porcellio by the reduced or absent pleopodal lungs, reflecting adaptation to drier conditions. Identification to species level requires examination of genital appendages and often geographic context.

Terrestrial; occupies drier microhabitats than many woodlice due to reduced dependence on pleopodal respiration. Specific substrate preferences are poorly documented but likely include rocky crevices, soil litter, and anthropogenic habitats in Mediterranean or warm-temperate regions.

Recorded from Europe and northern Asia (excluding China). The distribution appears fragmented with concentrations likely in southern Europe, potentially including volcanic regions suggested by the species epithet.

Functions as a detritivore in soil and litter communities, contributing to decomposition and nutrient cycling. As a member of the edaphic fauna, serves as prey for various small vertebrates and invertebrates.

No documented direct economic or medical significance. May occasionally occur in synanthropic habitats. Presence in iNaturalist with 146 observations indicates some citizen science documentation, primarily from European observers.

• Porcellio scaberCommon European woodlice with which it shares family Porcellionidae; differs in possessing well-developed pleopodal lungs and generally broader ecological tolerance.
• Proporcellio gracilisCongeneric species with similar reduced respiratory structures; separation requires detailed examination of male pleopod morphology.

• isopod
• woodlouse
• terrestrial crustacean
• Porcellionidae
• detritivore

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy