Genus Guide

Native across Europe and the Mediterranean; many species are widespread in temperate regions and several are common in the North American hobby through captive lines.

Primarily European and Mediterranean in origin; several species are among the most widely kept conglobating isopods worldwide.

Cosmopolitan — found on every continent in human-associated and natural habitats; among the most widespread isopod genera on Earth.

Southeast Asian origin for most hobby species; tropical humidity and limestone-rich substrates define wild habitats.

Cosmopolitan soil springtails; Folsomia candida is a standard temperate cleanup crew in labs and terrariums worldwide.

Tropical and subtropical regions, especially South and Southeast Asia; heat-tolerant compared with temperate springtails.