<em>Ancistrocerus campestris</em> in Kent Co., Maryland (9/6/2020). (c) pcowartrickmanphoto, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 219157 - Psn: 14)

Ancistrocerus campestris in Kent Co., Maryland (9/6/2020). (c) pcowartrickmanphoto, some rights reserved (CC BY-NC).

View Record Details Photo by Pamela Cowart-Rickman MBP List

A male <em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (9/7/2015). Verified by Matthias Buck/BugGuide. (Photo ID: 41857 - Psn: 15)

A male Ancistrocerus campestris in Montgomery Co., Maryland (9/7/2015). Verified by Matthias Buck/BugGuide.

View Record Details Photo by Steve Scholnick MBP List

<em>Ancistrocerus campestris</em> in Anne Arundel Co., Maryland (9/19/2020). Verified by Matthias Buck/BugGuide. (Photo ID: 526776 - Psn: 20)

Ancistrocerus campestris in Anne Arundel Co., Maryland (9/19/2020). Verified by Matthias Buck/BugGuide.

View Record Details Photo by Jim Moore MBP List

Ancistrocerus campestris in Kent Co., Maryland (9/6/2020). (c) pcowartrickmanphoto, some rights reserved (CC BY-NC).

View Record Details Photo by Pamela Cowart-Rickman MBP List

<em>Ancistrocerus campestris</em> in Prince George's Co., Maryland (8/24/2019). (c) Sergei Drovetski, all rights reserved. (Photo ID: 265723 - Psn: 34)

View Record Details Photo by Sergei Drovetski MBP List

An <em>Ancistrocerus capestris</em> in Talbot Co., Maryland (10/3/2009). (Photo ID: 2787 - Psn: 40)

An Ancistrocerus capestris in Talbot Co., Maryland (10/3/2009).

Photo by Jim Brighton MBP List

A female <em>Ancistrocerus campestris</em> in Prince George's Co., Maryland (10/1/2014). Determined by Matthias Buck/BugGuide. (Photo ID: 22500 - Psn: 40)

A female Ancistrocerus campestris in Prince George's Co., Maryland (10/1/2014). Determined by Matthias Buck/BugGuide.

View Record Details Photo by George Harley MBP List

<em>Ancistrocerus campestris</em> in Prince George's Co., Maryland (9/15/2018). (c) Jenny Glenn, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 198669 - Psn: 42)

Ancistrocerus campestris in Prince George's Co., Maryland (9/15/2018). (c) Jenny Glenn, some rights reserved (CC BY-NC).

View Record Details Photo by Jenny Glenn via iNaturalist MBP List

<em>Ancistrocerus campestris</em> in Baltimore Co., Maryland (9/3/2021). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 532410 - Psn: 44)

Ancistrocerus campestris in Baltimore Co., Maryland (9/3/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

<em>Ancistrocerus campestris</em> in Anne Arundel Co., Maryland (5/19/2024). (c) Zachary Dankowicz, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1037669 - Psn: 44)

Ancistrocerus campestris in Anne Arundel Co., Maryland (5/19/2024). (c) Zachary Dankowicz, some rights reserved (CC BY-NC).

View Record Details Photo by Zachary Dankowicz via iNaturalist MBP List

A male <em>Ancistrocerus campestris</em> in Baltimore City, Maryland (10/26/2009). Determined by Richard Vernier/BugGuide. (Photo ID: 43661 - Psn: 45)

A male Ancistrocerus campestris in Baltimore City, Maryland (10/26/2009). Determined by Richard Vernier/BugGuide.

View Record Details Photo by Thomas Wilson MBP List

Ancistrocerus campestris in Baltimore Co., Maryland (9/3/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

<em>Ancistrocerus campestris</em> in Prince George's Co., Maryland (8/20/2023). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 882466 - Psn: 45)

Ancistrocerus campestris in Prince George's Co., Maryland (8/20/2023). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

<em>Ancistrocerus campestris</em> in Baltimore Co., Maryland (9/14/2019). Determined by B. Dagley/BugGuide. (Photo ID: 644813 - Psn: 50)

Ancistrocerus campestris in Baltimore Co., Maryland (9/14/2019). Determined by B. Dagley/BugGuide.

View Record Details Photo by Pauline Horn MBP List

Ancistrocerus campestris in Anne Arundel Co., Maryland (5/19/2024). (c) Zachary Dankowicz, some rights reserved (CC BY-NC).

View Record Details Photo by Zachary Dankowicz via iNaturalist MBP List

<em>Ancistrocerus campestris</em> in Anne Arundel Co., Maryland (6/18/2020). (c) Timothy Reichard, all rights reserved. (Photo ID: 236068 - Psn: 55)

View Record Details Photo by Timothy Reichard MBP List

<em>Ancistrocerus campestris</em> in Frederick Co., Maryland (9/9/2017). (c) Mark Etheridge, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 359412 - Psn: 55)

Ancistrocerus campestris in Frederick Co., Maryland (9/9/2017). (c) Mark Etheridge, some rights reserved (CC BY-NC).

View Record Details Photo by Mark Etheridge MBP List

<em>Ancistrocerus campestris</em> in Charles Co., Maryland (10/10/2021). (c) Jim Brighton, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 465246 - Psn: 55)

Ancistrocerus campestris in Charles Co., Maryland (10/10/2021). (c) Jim Brighton, some rights reserved (CC BY-NC).

View Record Details Photo by Jim Brighton MBP List

<em>Ancistrocerus campestris</em> in Carroll Co., Maryland (7/30/2021). Determined by B. Dagley/BugGuide. (Photo ID: 754240 - Psn: 55)

Ancistrocerus campestris in Carroll Co., Maryland (7/30/2021). Determined by B. Dagley/BugGuide.

View Record Details Photo by Barbara Speckart MBP List

Ancistrocerus campestris in Prince George's Co., Maryland (8/20/2023). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

<em>Ancistrocerus campestris</em> in Garrett Co., Maryland (6/15/2024). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1048053 - Psn: 55)

Ancistrocerus campestris in Garrett Co., Maryland (6/15/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) (Photo ID: 1403603 - Psn: 55)

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC)

View Record Details Photo by Jim Moore MBP List

<em>Ancistrocerus campestris</em> in Garrett Co., Maryland (7/28/2019). (c) catchang, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 198834 - Psn: 62)

Ancistrocerus campestris in Garrett Co., Maryland (7/28/2019). (c) catchang, some rights reserved (CC BY-NC).

View Record Details Photo by catchang via iNaturalist MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) (Photo ID: 1403602 - Psn: 64)

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC)

View Record Details Photo by Jim Moore MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (10/27/2020). (c) Jane Hartman, all rights reserved. (Photo ID: 307276 - Psn: 65)

View Record Details Photo by Jane Hartman MBP List

An <em>Ancistrocerus campestris</em> in Baltimore City, Maryland (10/14/2020). (Photo ID: 307441 - Psn: 65)

An Ancistrocerus campestris in Baltimore City, Maryland (10/14/2020).

View Record Details Photo by Pauline Horn MBP List

<em>Ancistrocerus campestris</em> in Anne Arundel Co., Maryland (6/18/2020). (c) Timothy Reichard, all rights reserved. (Photo ID: 236066 - Psn: 66)

View Record Details Photo by Timothy Reichard MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (8/30/2020). (c) Jane Hartman, all rights reserved. (Photo ID: 305767 - Psn: 66)

View Record Details Photo by Jane Hartman MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) (Photo ID: 1403605 - Psn: 66)

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC)

View Record Details Photo by Jim Moore MBP List

<em>Ancistrocerus campestris</em> in Montgomery Co., Maryland (8/28/2025). (c) Carla Morris, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1338904 - Psn: 200)

Ancistrocerus campestris in Montgomery Co., Maryland (8/28/2025). (c) Carla Morris, some rights reserved (CC BY-NC).

View Record Details Photo by cammfl via iNaturalist MBP List

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

Ancistrocerus campestris in Kent Co., Maryland (9/6/2020). (c) pcowartrickmanphoto, some rights reserved (CC BY-NC). View Record Details Media by Pamela Cowart-Rickman.

A male Ancistrocerus campestris in Montgomery Co., Maryland (9/7/2015). Verified by Matthias Buck/BugGuide. View Record Details Media by Steve Scholnick.

Ancistrocerus campestris in Anne Arundel Co., Maryland (9/19/2020). Verified by Matthias Buck/BugGuide. View Record Details Media by Jim Moore.

Ancistrocerus campestris in Kent Co., Maryland (9/6/2020). (c) pcowartrickmanphoto, some rights reserved (CC BY-NC). View Record Details Media by Pamela Cowart-Rickman.

An Ancistrocerus capestris in Talbot Co., Maryland (10/3/2009). Media by Jim Brighton.

A female Ancistrocerus campestris in Prince George's Co., Maryland (10/1/2014). Determined by Matthias Buck/BugGuide. View Record Details Media by George Harley.

Ancistrocerus campestris in Prince George's Co., Maryland (9/15/2018). (c) Jenny Glenn, some rights reserved (CC BY-NC). View Record Details Media by Jenny Glenn via iNaturalist.

Ancistrocerus campestris in Baltimore Co., Maryland (9/3/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Ancistrocerus campestris in Anne Arundel Co., Maryland (5/19/2024). (c) Zachary Dankowicz, some rights reserved (CC BY-NC). View Record Details Media by Zachary Dankowicz via iNaturalist.

A male Ancistrocerus campestris in Baltimore City, Maryland (10/26/2009). Determined by Richard Vernier/BugGuide. View Record Details Media by Thomas Wilson.

Ancistrocerus campestris in Baltimore Co., Maryland (9/3/2021). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Ancistrocerus campestris in Prince George's Co., Maryland (8/20/2023). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Ancistrocerus campestris in Baltimore Co., Maryland (9/14/2019). Determined by B. Dagley/BugGuide. View Record Details Media by Pauline Horn.

Ancistrocerus campestris in Anne Arundel Co., Maryland (5/19/2024). (c) Zachary Dankowicz, some rights reserved (CC BY-NC). View Record Details Media by Zachary Dankowicz via iNaturalist.

Ancistrocerus campestris in Frederick Co., Maryland (9/9/2017). (c) Mark Etheridge, some rights reserved (CC BY-NC). View Record Details Media by Mark Etheridge.

Ancistrocerus campestris in Charles Co., Maryland (10/10/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). View Record Details Media by Jim Brighton.

Ancistrocerus campestris in Carroll Co., Maryland (7/30/2021). Determined by B. Dagley/BugGuide. View Record Details Media by Barbara Speckart.

Ancistrocerus campestris in Prince George's Co., Maryland (8/20/2023). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Ancistrocerus campestris in Garrett Co., Maryland (6/15/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) View Record Details Media by Jim Moore.

Ancistrocerus campestris in Garrett Co., Maryland (7/28/2019). (c) catchang, some rights reserved (CC BY-NC). View Record Details Media by catchang via iNaturalist.

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) View Record Details Media by Jim Moore.

An Ancistrocerus campestris in Baltimore City, Maryland (10/14/2020). View Record Details Media by Pauline Horn.

Ancistrocerus campestris in Montgomery Co., Maryland (10/7/2025). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC) View Record Details Media by Jim Moore.

Ancistrocerus campestris in Montgomery Co., Maryland (8/28/2025). (c) Carla Morris, some rights reserved (CC BY-NC). View Record Details Media by cammfl via iNaturalist.

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Ancistrocerus campestris

Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	Pancrustacea
Class:	Insecta
Order:	Hymenoptera
Family:	Vespidae
Genus:	Ancistrocerus
Species:	A. campestris
Binomial name
*Ancistrocerus campestris* (de Saussure, 1853)

Ancistrocerus campestris is a species of potter wasp. Adults grow up to 10 mm (0.394 in) in length.^[1] Quickly identified by the coloration on the rear of its thorax which is reminiscent of a smiley face. Preys on the caterpillars of Amphisbatidae and Gelechiidae.