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

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29


Previous events
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Crustaceans (Crustacea) » Malacostracans (Malacostraca) » Marsupial Crustaceans (Peracarida) » Isopods (Isopoda) » Scutocoxifera » Woodlice (Oniscidea) » Holoverticata » Orthogonopoda » Crinocheta » Porcellionidae » Porcellio » Giant Canyon Woodlouse (Porcellio dilatatus)
Photo#188447
Porcellio dilatatus
Copyright © 2008 Giant Isopod

Porcellio dilatatus
San Francisco Bay Area, California, USA
June 6, 2008
Size: 15mm
I believe this is Porcellio dilatatus. There is not yet a category for this species on your site.
You can find more photos of this individual and others in the Porcellio dilatatus gallery
tag · login or register to post comments
Contributed by Dr. Bio on 6 June, 2008 - 8:15pm
Last updated 13 September, 2008 - 6:46am

Moved
Moved from Woodlice. Thanks, Ferenc - I have copied your comments to the guide page.
… Hannah Nendick-Mason, 22 July, 2008 - 1:41pm login or register to post comments

Main (visible) characteristic
Main (visible) characteristics of the species:

- wide oval shape (wider and bigger than a usual P. scaber specimen)
- brownish color with typical lighter pattern (compare this with those under P. scaber on bugguide)
- 2 flagellae on each antenna (like every Porcellio)
- 2 pairs of bright white "lungs" on ventral side (like every Porcellio)
- well developed middle lobe on the head, but rounded rather than pointy
- and the most helpful: the shape of the telson is elongated with rounded tip and not pointy-triangle (e.g. that of P. scaber)
… Ferenc Vilisics, 22 July, 2008 - 8:46am login or register to post comments

What are the features that distinguish this species?
An editor will make a page if you can provide the information. There is also a section in Forums here for such page requests. Otherwise they risk being buried in ID Request.
… Hannah Nendick-Mason, 6 June, 2008 - 9:12pm login or register to post comments

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact