A Thistle Tortoise Beetle in Montgomery Co., Maryland (4/17/2019).

View Record Details Photo by Steve Scholnick MBP List

A Thistle Tortoise Beetle in Frederick Co., Maryland (6/7/2017).

View Record Details Photo by Mark Etheridge MBP List

Thistle Tortoise Beetles in Frederick Co., Maryland (4/30/2017).

View Record Details Photo by Katie Woods MBP List

Mating Thistle Tortoise Beetles in Howard Co., Maryland (4/26/2014).

Photo by Ashley Bradford MBP List

Thistle Tortoise Beetle in Prince George's Co., Maryland (5/2/2022). (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: 560598 - Psn: 25)

Thistle Tortoise Beetle in Prince George's Co., Maryland (5/2/2022). (c) A van den Beemt, some rights reserved (CC BY-NC).

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Howard Co., Maryland (4/26/2014).

Photo by Ashley Bradford MBP List

Thistle Tortoise Beetle in Howard Co., Maryland (4/26/2014).

Photo by Ashley Bradford MBP List

A Thistle Tortoise Beetle in Montgomery Co., Maryland (5/4/2015).

View Record Details Photo by Steve Scholnick MBP List

A Thistle Tortoise Beetle in Anne Arundel Co., Maryland (6/6/2015).

View Record Details Photo by Bill Harms MBP List

A recently emerged Thistle Tortoise Beetle in Harford Co., Maryland (6/12/2016).

View Record Details Photo by Bob Cammarata MBP List

A Thistle Tortoise Beetle in Baltimore City, Maryland (1/6/2007).

View Record Details Photo by Thomas Wilson MBP List

Thistle Tortoise Beetles in Carroll Co., Maryland (7/6/2018).

View Record Details Photo by Bob Cammarata MBP List

Thistle Tortoise Beetle in Anne Arundel Co., Maryland (5/7/2016). (c) Timothy Reichard, all rights reserved. (Photo ID: 193624 - Psn: 45)

View Record Details Photo by Timothy Reichard MBP List

Thistle Tortoise Beetle in Carroll Co., Maryland (6/24/2018). (c) Peter Coffey, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 400074 - Psn: 45)

Thistle Tortoise Beetle in Carroll Co., Maryland (6/24/2018). (c) Peter Coffey, some rights reserved (CC BY-NC).

View Record Details Photo by Peter Coffey via iNaturalist MBP List

A Thistle Tortoise Beetle in Carroll Co., Maryland (6/24/2023). Verified by V. Belov/BugGuide.

View Record Details Photo by Barbara Speckart MBP List

Thistle Tortoise Beetle in Anne Arundel Co., Maryland (5/7/2016). (c) Timothy Reichard, all rights reserved. (Photo ID: 193625 - Psn: 46)

View Record Details Photo by Timothy Reichard MBP List

A Thistle Tortoise Beetle in Frederick Co., Maryland (4/16/2017).

View Record Details Photo by Andy Wilson MBP List

A Thistle Tortoise Beetle in Baltimore Co., Maryland (5/29/2018). Determined by Maggie Furta and Jeff Brown/BugGuide.

View Record Details Photo by Emily Stanley MBP List

Thistle Tortoise Beetle in Carroll Co., Maryland (7/17/2023). (c) Adrienne van den Beemt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 1191311 - Psn: 66)

Thistle Tortoise Beetle in Carroll Co., Maryland (7/17/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY).

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Howard Co., Maryland (6/14/2025). (c) Benjamin Burgunder, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>) (Photo ID: 1434326 - Psn: 66)

Thistle Tortoise Beetle in Howard Co., Maryland (6/14/2025). (c) Benjamin Burgunder, some rights reserved (CC BY)

View Record Details Photo by Benjamin Burgunder via iNaturalist MBP List

Thistle Tortoise Beetles (larva on left, pupa on right) on Bull Thistle in Washington Co., Maryland (6/21/2009).

View Record Details Photo by Bob Cammarata MBP List

A Thistle Tortoise Beetle larva in Talbot Co., Maryland (5/17/2015).

View Record Details Photo by USGS PWRC MBP List

Thistle Tortoise Beetle in Prince George's Co., Maryland (5/2/2022). (c) A van den Beemt, some rights reserved (CC BY-NC).

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Anne Arundel Co., Maryland (5/7/2016). (c) Timothy Reichard, all rights reserved. (Photo ID: 193626 - Psn: 96)

View Record Details Photo by Timothy Reichard MBP List

Thistle Tortoise Beetle exuvia in Harford Co., Maryland (6/12/2016).

View Record Details Photo by Bob Cammarata MBP List

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>) (Photo ID: 1484289 - Psn: 200)

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (CC BY)

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (CC BY)

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (CC BY)

View Record Details Photo by Adrienne van den Beemt MBP List

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (CC BY)

View Record Details Photo by Adrienne van den Beemt MBP List

Map Snapshot

46 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

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

A Thistle Tortoise Beetle in Montgomery Co., Maryland (4/17/2019). View Record Details Media by Steve Scholnick.

A Thistle Tortoise Beetle in Frederick Co., Maryland (6/7/2017). View Record Details Media by Mark Etheridge.

Thistle Tortoise Beetles in Frederick Co., Maryland (4/30/2017). View Record Details Media by Katie Woods.

Mating Thistle Tortoise Beetles in Howard Co., Maryland (4/26/2014). Media by Ashley Bradford.

Thistle Tortoise Beetle in Prince George's Co., Maryland (5/2/2022). (c) A van den Beemt, some rights reserved (CC BY-NC). View Record Details Media by Adrienne van den Beemt.

Thistle Tortoise Beetle in Howard Co., Maryland (4/26/2014). Media by Ashley Bradford.

A Thistle Tortoise Beetle in Montgomery Co., Maryland (5/4/2015). View Record Details Media by Steve Scholnick.

A Thistle Tortoise Beetle in Anne Arundel Co., Maryland (6/6/2015). View Record Details Media by Bill Harms.

A recently emerged Thistle Tortoise Beetle in Harford Co., Maryland (6/12/2016). View Record Details Media by Bob Cammarata.

A Thistle Tortoise Beetle in Baltimore City, Maryland (1/6/2007). View Record Details Media by Thomas Wilson.

Thistle Tortoise Beetles in Carroll Co., Maryland (7/6/2018). View Record Details Media by Bob Cammarata.

Thistle Tortoise Beetle in Carroll Co., Maryland (6/24/2018). (c) Peter Coffey, some rights reserved (CC BY-NC). View Record Details Media by Peter Coffey via iNaturalist.

A Thistle Tortoise Beetle in Carroll Co., Maryland (6/24/2023). Verified by V. Belov/BugGuide. View Record Details Media by Barbara Speckart.

A Thistle Tortoise Beetle in Frederick Co., Maryland (4/16/2017). View Record Details Media by Andy Wilson.

A Thistle Tortoise Beetle in Baltimore Co., Maryland (5/29/2018). Determined by Maggie Furta and Jeff Brown/BugGuide. View Record Details Media by Emily Stanley.

Thistle Tortoise Beetle in Carroll Co., Maryland (7/17/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY). View Record Details Media by Adrienne van den Beemt.

Thistle Tortoise Beetle in Howard Co., Maryland (6/14/2025). (c) Benjamin Burgunder, some rights reserved (CC BY) View Record Details Media by Benjamin Burgunder via iNaturalist.

Thistle Tortoise Beetles (larva on left, pupa on right) on Bull Thistle in Washington Co., Maryland (6/21/2009). View Record Details Media by Bob Cammarata.

A Thistle Tortoise Beetle larva in Talbot Co., Maryland (5/17/2015). View Record Details Media by USGS PWRC.

Thistle Tortoise Beetle in Prince George's Co., Maryland (5/2/2022). (c) A van den Beemt, some rights reserved (CC BY-NC). View Record Details Media by Adrienne van den Beemt.

Thistle Tortoise Beetle exuvia in Harford Co., Maryland (6/12/2016). View Record Details Media by Bob Cammarata.

Thistle Tortoise Beetle in Frederick Co., Maryland (4/11/2026). (c) Adrienne van den Beemt, some rights reserved (CC BY) View Record Details Media by Adrienne van den Beemt.