How do you tell the difference between female and male woodlice?

To differentiate between female and male woodlice, you can look for the presence of a pouch called a "brood pouch" on the underside of the female, which is used for carrying eggs. Males typically have a more pronounced, elongated body shape and may possess larger, more prominent antennae. Additionally, male woodlice often have a pair of modified segments at the rear end, which are used for mating. Observing these features will help you identify woodlice by sex.