Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Cylisticus convexus - Curly Woodlouse

Curly Woodlouse - Cylisticus convexus Unknown Sowbug/Isopod - Cylisticus convexus Isopod - Cylisticus convexus Wood Louse? Sowbug? - Cylisticus convexus Woodlouse - Cylisticus convexus Isopoda > Cylisticidae > Cylisticus - Cylisticus convexus Wood Louse  - Cylisticus convexus Wood Louse  - Cylisticus convexus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Peracarida (Peracarida (Amphipods and Isopods))
Order Isopoda (Isopods)
Suborder Oniscidea (Woodlice)
Infraorder Holoverticata
No Taxon (Orthogonopoda)
No Taxon (Crinocheta)
Family Cylisticidae
Genus Cylisticus
Species convexus (Curly Woodlouse)
8-15 mm
capable of rolling into a ball; dorsal surface dark, glossy, grayish-black, marked with pale translucent streaks; uropods extend beyond terminal abdominal segment; abdomen not abruptly narrower than thorax; flagellum of second antennae with 2 articles; banding of antennae absent or inconspicuous; tergites 3, 4, and 5 narrower than other tergites; 5 pairs of white lungs on underside of tail
native to Europe, adventive in NA and now widespread in the eastern half of the continent from NF to SD(1)(2)(3)
on the ground around homes or other buildings; nocturnal
dead vegetation such as wood and leaf litter
Works Cited
1.Checklist of the terrestrial isopods of the New World (Crustacea, Isopoda, Oniscidea)
Leistikow A., Wägele J.W. 1999. Rev. Bras. Zool. 16: 1-72.
2.The terrestrial isopods of Nebraska (Crustacea: Isopoda)
W.F. Rapp. 2001. Transactions of the Nebraska Academy of Sciences 27.
3.Wright J. (1997) Pillbugs