Distribution of Estonian Oniscidea. Red denotes studied specimens (1984–2020), blue = literature data 1970–1993, yellow = literature data 1927–1930 A Ligidium hypnorum B Trichoniscus pusillus C Hyloniscus riparius D Haplophthalmus mengii E Platyarthrus hoffmannseggii F Trachelipus rathkii G Porcellio scaber H Porcellio spinicornis I Cylisticus convexus J Oniscus asellus K Armadillidium opacum L Armadillidium pictum M Armadillidium pulchellum N Armadillidium zenckeri O Armadillidium vulgare. Porcellionides pruinosus has been omitted since the published source mentions no specific localities.