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Home » Guide » Arthropods (Arthropoda) » Crustaceans (Crustacea) » Malacostracans (Malacostraca) » Marsupial Crustaceans (Peracarida) » Isopods (Isopoda) » Scutocoxifera » Woodlice (Oniscidea) » Holoverticata » Orthogonopoda » Crinocheta » Trachelipodidae » Trachelipus » Rathke's Woodlouse (Trachelipus rathkii)
Photo#89299
Woodlice - Trachelipus rathkii
Copyright © 2006 tom murray

Woodlice - Trachelipus rathkii
Harvard, Worcester County, Massachusetts, USA
December 2, 2006
Size: 4mm
Found in leaf litter.
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Contributed by tom murray on 2 December, 2006 - 10:38pm
Last updated 12 January, 2007 - 7:16am

Thanks Ferenc!
The 2 T. rathkii show different ages of the bug, so that makes it easier to recognize next time I see one.
… tom murray, 12 January, 2007 - 7:16am login or register to post comments

rathkii
Hi! This one belongs to the species Trachelipus rathkii, family Trachelipodidae. Although most of the identification marks are invisible on the picture, note the row of white patches on the margins of tergites, and the dark stripe on the back. Porcellio scaber is quite similar, but the order of patches (if there's any)are less organized compared to T. rathkii. It's widespread across Europe, but present in the USA too.

Best wishes, Ferenc
… Ferenc Vilisics, 12 January, 2007 - 3:19am login or register to post comments

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