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Pillbugs
Armadillidium
Armadillidium () is a genus of the small terrestrial crustacean known as the woodlouse. It is one of 18 genera nested within the family Armadillidiidae. Armadillidium is also one of the groups commonly known as pill woodlice, leg pebbles, pill bugs, roly-poly, or potato bugs, and are often confused with pill millipedes such as Glomeris marginata. They are characterised by their ability to roll into a ball ("volvation") when disturbed.
With a penchant for damp and dark places, species in the Armadillidium genus can typically be found under rocks, in leaf litter, and in or around the soil. Aided by their dorsoventrally flattened body and small size – usually growing no bigger than 2.5 cm – these pill bugs are able to squeeze into tight cracks and are common household pests as a result.
60 branches of this genus, most-observed first
Common Pill Woodlouse
speciesArmadillidium vulgare
Nosy Pill Woodlouse
speciesArmadillidium nasatum
Versicolored Pill Woodlouse
speciesArmadillidium versicolor
Southern Pill Woodlouse
speciesArmadillidium depressum
Granulated Pill Woodlouse
speciesArmadillidium granulatum
Arcangeli's Pill Woodlouse
speciesArmadillidium arcangelii
Painted Pill Woodlouse
speciesArmadillidium pictum
Clown Isopod
speciesArmadillidium klugii
Beautiful Pill Woodlouse
speciesArmadillidium pulchellum
Zebra Isopod
speciesArmadillidium maculatum
Armadillidium sordidum
complexArmadillidium sordidum
Armadillidium simoni
complexArmadillidium simoni
Pallas's Pill Woodlouse
speciesArmadillidium pallasii
Opaque Pill Woodlouse
speciesArmadillidium opacum
White Pill Woodlouse
speciesArmadillidium album
Gestro's Pill Woodlouse
speciesArmadillidium gestroi
Peracca's Pill Woodlouse
speciesArmadillidium peraccae
Marmorated Pill Woodlouse
speciesArmadillidium marmoratum
Zencker's Pill Woodlouse
speciesArmadillidium zenckeri
Ameglio's Pill Woodlouse
speciesArmadillidium ameglioi
Bay-colored Pill Woodlouse
speciesArmadillidium badium
Insular Pill Woodlouse
speciesArmadillidium insulanum
Armadillidium tirolense
speciesArmadillidium tirolense
Corfu's Pill Woodlouse
speciesArmadillidium corcyraeum
Five-spotted Pill Woodlouse
speciesArmadillidium quinquepustulatum
Werner's Pill Woodlouse
speciesArmadillidium werneri
Triangle-faced Pill Woodlouse
speciesArmadillidium frontetriangulum
Serrated Pill Woodlouse
speciesArmadillidium serratum
Decorated Pill Woodlouse
speciesArmadillidium decorum
Attican Pill Woodlouse
speciesArmadillidium atticum
Fallacious Pill Woodlouse
speciesArmadillidium fallax
Sandstone pill woodlouse
speciesArmadillidium scaberrimum
Armadillidium azerbaidzhanum
speciesArmadillidium azerbaidzhanum
Furcated Pill Woodlouse
speciesArmadillidium furcatum
Armadillidium galiciense
speciesArmadillidium galiciense
Armadillidium schmalfussi
speciesArmadillidium schmalfussi
Armadillidium brentanum
speciesArmadillidium brentanum
Pleurarmadillidium
subgenusPleurarmadillidium
Armadillidium germanicum
speciesArmadillidium germanicum
Armadillidium odhneri
speciesArmadillidium odhneri
Mount Xerovouni Pill Woodlouse
speciesArmadillidium xerovunense
Stone-roving Pill Woodlouse
speciesArmadillidium saxivagum
Armadillidium marmorivagum
speciesArmadillidium marmorivagum
Armadillidium flavoscutatum
speciesArmadillidium flavoscutatum
Bicurved Pill Woodlouse
speciesArmadillidium bicurvatum
Ruffo's Pill Woodlouse
speciesArmadillidium ruffoi
Calabrian Nosy Pill Woodlouse
speciesArmadillidium calabricum
Peloponnesian Pill Woodlouse
speciesArmadillidium peloponnesiacum
Arcadian Pill Woodlouse
speciesArmadillidium arcadicum
Border-faced Pill Woodlouse
speciesArmadillidium frontemarginatum
Armadillidium boukorninense
speciesArmadillidium boukorninense
Traian's Pill Woodlouse
speciesArmadillidium traiani
Epirotican Pill Woodlouse
speciesArmadillidium epiroticum
Sfenthourakis's Pill Woodlouse
speciesArmadillidium sfenthourakisi
Aegean Pill Woodlouse
speciesArmadillidium aegaeum
Stagno's Pill Woodlouse
speciesArmadillidium stagnoense
Kefalonian Pill Woodlouse
speciesArmadillidium cephalonicum
Cytherean Pill Woodlouse
speciesArmadillidium cythereium
Digging Pill Woodlouse
speciesArmadillidium fossuligerum
Ioannina Pill Woodlouse
speciesArmadillidium janinense
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Armadillidium in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 48295.