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Home » Guide » Arthropods (Arthropoda) » Crustaceans (Crustacea) » Malacostracans (Malacostraca) » Peracarida (Amphipods and Isopods) (Peracarida) » Isopods (Isopoda) » Woodlice (Oniscidea) » Holoverticata » Orthogonopoda » Synocheta » Trichoniscidae » Hyloniscus » Hyloniscus riparius
Photo#410868
Woodlouse - Hyloniscus riparius
Copyright © 2010 Graham Montgomery

Woodlouse - Hyloniscus riparius
Alton, Madison County, Illinois, USA
June 11, 2010
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Contributed by Graham Montgomery on 14 June, 2010 - 10:19am
Last updated 31 October, 2015 - 3:12pm

Moved
Moved from Trichoniscus pusillus. Not sure how this ended up in T. pusillus, this animal definitely just has one ocellus per eye, as is characteristic of the genus Hyloniscus. H. riparius was introduced to North America 60-70ish years ago, and is spreading rapidly. It has been demonstrated to outcompete T. pusillus wherever the two overlap, at least in NY, and probably well outside that state as well.
… Eric C. Maxwell, 31 October, 2015 - 3:12pm login or register to post comments

Moved
Moved from Woodlice.
… v belov, 15 November, 2010 - 7:36am login or register to post comments

Trichoniscus pusillus
Trichoniscus spp. have 3 black ocelli in each eye which can be seen here - excellent photo! The sharply tapered terminal segment of the antennae and wdely splayed uropods are typical of most Trichoniscidae. T. pusillus is a common European introduction in eastern USA, typically found in damp woodland litter.
… Jonathan Wright, 14 November, 2010 - 11:05pm login or register to post comments

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