A Common Rough Woodlouse in Harford Co., Maryland (1/19/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Caroline Co., Maryland (1/1/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Baltimore Co., Maryland (12/16/2018).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (3/8/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (11/24/2017). Determined by Tristan Ombrelle/BugGuide.

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Queen Anne's Co., Maryland (1/1/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Caroline Co., Maryland (1/1/2020).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Prince George's Co., Maryland (9/23/2017). (c) Katja Schulz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 695116 - Psn: 25)

Common Rough Woodlouse in Prince George's Co., Maryland (9/23/2017). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

A Common Rough Woodlouse in Calvert Co., Maryland (3/4/2017).

View Record Details Photo by Bill Hubick MBP List

A Common Rough Woodlouse in Frederick Co., Maryland (12/25/2019).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (1/5/2020).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Prince George's Co., Maryland (9/23/2017). (c) Katja Schulz, some rights reserved (CC BY).

View Record Details Photo by Katja Schulz via iNaturalist MBP List

A Common Rough Woodlouse in Calvert Co., Maryland (3/4/2017).

View Record Details Photo by Bill Hubick MBP List

A Common Rough Woodlouse in Cecil Co., Maryland (1/24/2019). Verified by Ken Wolgemuth/BugGuide.

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Kent Co., Maryland (8/6/2021).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Washington Co., Maryland (7/31/2022).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in St. Mary's Co., Maryland (5/23/2023).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (12/8/2018).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Baltimore Co., Maryland (6/4/2022). (c) Jim Moore (Maryland), some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 582583 - Psn: 52)

Common Rough Woodlouse in Baltimore Co., Maryland (6/4/2022). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC).

View Record Details Photo by Jim Moore MBP List

Common Rough Woodlouse in Dorchester Co., Maryland (2/25/2023). (c) Jim Brighton, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 748658 - Psn: 52)

Common Rough Woodlouse in Dorchester Co., Maryland (2/25/2023). (c) Jim Brighton, some rights reserved (CC BY-NC).

View Record Details Photo by Jim Brighton MBP List

A Common Rough Woodlouse in Charles Co., Maryland (6/17/2023).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Prince George's Co., Maryland (3/8/2015). Determined by Eric C. Maxwell/BugGuide.

View Record Details Photo by Jesse Christopherson MBP List

A Common Rough Woodlouse in Harford Co., Maryland (5/4/2018).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (7/27/2019).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Dorchester Co., Maryland (3/23/2021).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Charles Co., Maryland (8/24/2022).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Montgomery Co., Maryland (4/14/2023).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Baltimore Co., Maryland (1/12/2019). Determined by hisserdude/BugGuide.

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Anne Arundel Co., Maryland (5/19/2018).

View Record Details Photo by Bill Hubick MBP List

A Common Rough Woodlouse in Garrett Co., Maryland (5/12/2023).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Anne Arundel Co., Maryland (2/6/2017). (c) Bill Hubick, all rights reserved. (Photo ID: 1161355 - Psn: 65)

View Record Details Photo by Bill Hubick MBP List

Common Rough Woodlice in Baltimore Co., Maryland (5/18/2022).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Prince George's Co., Maryland (3/8/2015). Determined by Eric C. Maxwell/BugGuide.

View Record Details Photo by Jesse Christopherson MBP List

A Common Rough Woodlouse in Harford Co., Maryland (2/23/2020).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Calvert Co., Maryland (3/11/2025). (c) Jim Brighton, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1214577 - Psn: 78)

Common Rough Woodlouse in Calvert Co., Maryland (3/11/2025). (c) Jim Brighton, some rights reserved (CC BY-NC).

View Record Details Photo by Jim Brighton MBP List

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020).

View Record Details Photo by Dave Webb MBP List

A Common Rough Woodlouse in Harford Co., Maryland (6/25/2018).

View Record Details Photo by Dave Webb MBP List

Common Rough Woodlouse in Baltimore Co., Maryland (10/29/2022). (c) A van den Beemt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 675930 - Psn: 95)

Common Rough Woodlouse in Baltimore Co., Maryland (10/29/2022). (c) A van den Beemt, some rights reserved (CC BY-NC).

View Record Details Photo by Adrienne van den Beemt MBP List

Common Rough Woodlouse in Baltimore Co., Maryland (10/29/2022). (c) A van den Beemt, some rights reserved (CC BY-NC).

View Record Details Photo by Adrienne van den Beemt MBP List

Map Snapshot

90 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

Status

Originally from Europe. Listed in the Global Invasive Species Database.

Seasonality Summary

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Resources

View at iNaturalist Search Google Images Search MBP Facebook posts

View images at BugGuide

Citations

No citations linked for this taxon yet.

MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/. Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

A Common Rough Woodlouse in Harford Co., Maryland (1/19/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Caroline Co., Maryland (1/1/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Baltimore Co., Maryland (12/16/2018). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (3/8/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (11/24/2017). Determined by Tristan Ombrelle/BugGuide. View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Queen Anne's Co., Maryland (1/1/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Caroline Co., Maryland (1/1/2020). View Record Details Media by Dave Webb.

Common Rough Woodlouse in Prince George's Co., Maryland (9/23/2017). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

A Common Rough Woodlouse in Calvert Co., Maryland (3/4/2017). View Record Details Media by Bill Hubick.

A Common Rough Woodlouse in Frederick Co., Maryland (12/25/2019). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (1/5/2020). View Record Details Media by Dave Webb.

Common Rough Woodlouse in Prince George's Co., Maryland (9/23/2017). (c) Katja Schulz, some rights reserved (CC BY). View Record Details Media by Katja Schulz via iNaturalist.

A Common Rough Woodlouse in Calvert Co., Maryland (3/4/2017). View Record Details Media by Bill Hubick.

A Common Rough Woodlouse in Cecil Co., Maryland (1/24/2019). Verified by Ken Wolgemuth/BugGuide. View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Kent Co., Maryland (8/6/2021). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Washington Co., Maryland (7/31/2022). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in St. Mary's Co., Maryland (5/23/2023). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (12/8/2018). View Record Details Media by Dave Webb.

Common Rough Woodlouse in Baltimore Co., Maryland (6/4/2022). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC). View Record Details Media by Jim Moore.

Common Rough Woodlouse in Dorchester Co., Maryland (2/25/2023). (c) Jim Brighton, some rights reserved (CC BY-NC). View Record Details Media by Jim Brighton.

A Common Rough Woodlouse in Charles Co., Maryland (6/17/2023). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Prince George's Co., Maryland (3/8/2015). Determined by Eric C. Maxwell/BugGuide. View Record Details Media by Jesse Christopherson.

A Common Rough Woodlouse in Harford Co., Maryland (5/4/2018). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (7/27/2019). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Dorchester Co., Maryland (3/23/2021). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Charles Co., Maryland (8/24/2022). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Montgomery Co., Maryland (4/14/2023). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Baltimore Co., Maryland (1/12/2019). Determined by hisserdude/BugGuide. View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Anne Arundel Co., Maryland (5/19/2018). View Record Details Media by Bill Hubick.

A Common Rough Woodlouse in Garrett Co., Maryland (5/12/2023). View Record Details Media by Dave Webb.

Common Rough Woodlice in Baltimore Co., Maryland (5/18/2022). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Prince George's Co., Maryland (3/8/2015). Determined by Eric C. Maxwell/BugGuide. View Record Details Media by Jesse Christopherson.

A Common Rough Woodlouse in Harford Co., Maryland (2/23/2020). View Record Details Media by Dave Webb.

Common Rough Woodlouse in Calvert Co., Maryland (3/11/2025). (c) Jim Brighton, some rights reserved (CC BY-NC). View Record Details Media by Jim Brighton.

A Common Rough Woodlouse in Harford Co., Maryland (1/11/2020). View Record Details Media by Dave Webb.

A Common Rough Woodlouse in Harford Co., Maryland (6/25/2018). View Record Details Media by Dave Webb.

Common Rough Woodlouse in Baltimore Co., Maryland (10/29/2022). (c) A van den Beemt, some rights reserved (CC BY-NC). View Record Details Media by Adrienne van den Beemt.