An Elm Cockscomb Aphid gall on elm in Allegany Co., Maryland (5/31/2014).

Photo by Richard Orr MBP List

An Elm Cockscomb Aphid in Allegany Co., Maryland (5/31/2014).

Photo by Richard Orr MBP List

Elm Cockscomb Aphid in Washington Co., Maryland (5/28/2017). (c) Mark Etheridge, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 346589 - Psn: 52)

Elm Cockscomb Aphid in Washington Co., Maryland (5/28/2017). (c) Mark Etheridge, some rights reserved (CC BY-NC).

View Record Details Photo by Mark Etheridge MBP List

Elm Cockscomb Aphid galls in Allegany Co., Maryland (5/21/2018).

View Record Details Photo by Andy Gougherty MBP List

An Elm Cockscomb Aphid gall in Washington Co., Maryland (6/3/2017).

View Record Details Photo by Rick Borchelt MBP List

Elm Cockscomb Aphid in Howard Co., Maryland (6/27/2018).

View Record Details Photo by Sue Muller MBP List

Elm Cockscomb Aphid in Allegany Co., Maryland (7/21/2019). (c) Andy Gougherty, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 294157 - Psn: 145)

Elm Cockscomb Aphid in Allegany Co., Maryland (7/21/2019). (c) Andy Gougherty, some rights reserved (CC BY-NC).

View Record Details Photo by Andy Gougherty via iNaturalist MBP List

Elm Cockscomb Aphid in Anne Arundel Co., Maryland (6/25/2021). (c) Timothy Reichard, all rights reserved. (Photo ID: 525514 - Psn: 145)

View Record Details Photo by Timothy Reichard MBP List

Elm Cockscomb Aphid in Anne Arundel Co., Maryland (6/25/2021). (c) Timothy Reichard, all rights reserved. (Photo ID: 525515 - Psn: 155)

View Record Details Photo by Timothy Reichard MBP List

Elm Cockscomb Aphid in Anne Arundel Co., Maryland (6/25/2021). (c) Timothy Reichard, all rights reserved. (Photo ID: 525516 - Psn: 166)

View Record Details Photo by Timothy Reichard MBP List

Elm Cockscomb Aphid in Carroll Co., Maryland (6/8/2024). (c) Matthew Beziat, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1038205 - Psn: 166)

Elm Cockscomb Aphid in Carroll Co., Maryland (6/8/2024). (c) Matthew Beziat, some rights reserved (CC BY-NC).

View Record Details Photo by Matthew Beziat MBP List

Elm Cockscomb Aphid in Harford Co., Maryland (6/10/2022). (c) skollar, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 586921 - Psn: 168)

Elm Cockscomb Aphid in Harford Co., Maryland (6/10/2022). (c) skollar, some rights reserved (CC BY-NC).

View Record Details Photo by skollar via iNaturalist MBP List

Elm Cockscomb Aphid in Charles Co., Maryland (4/29/2023). (c) Deborah Barber, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 796625 - Psn: 188)

Elm Cockscomb Aphid in Charles Co., Maryland (4/29/2023). (c) Deborah Barber, some rights reserved (CC BY-NC).

View Record Details Photo by Deborah Barber via iNaturalist MBP List

Elm Cockscomb Aphid galls in Montgomery Co., Maryland (5/27/2017).

View Record Details Photo by Rick Borchelt MBP List

Elm Cockscomb Aphid in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. (Photo ID: 842129 - Psn: 208)

View Record Details Photo by Kyle Klotz MBP List

Elm Cockscomb Aphid in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. (Photo ID: 842128 - Psn: 210)

View Record Details Photo by Kyle Klotz MBP List

Elm Cockscomb Aphid in Anne Arundel Co., Maryland (6/25/2021). (c) Timothy Reichard, all rights reserved. (Photo ID: 525517 - Psn: 225)

View Record Details Photo by Timothy Reichard MBP List

Map Snapshot

42 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

Relationships

Use elms as host plants.

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

An Elm Cockscomb Aphid gall on elm in Allegany Co., Maryland (5/31/2014). Media by Richard Orr.

An Elm Cockscomb Aphid in Allegany Co., Maryland (5/31/2014). Media by Richard Orr.

Elm Cockscomb Aphid in Washington Co., Maryland (5/28/2017). (c) Mark Etheridge, some rights reserved (CC BY-NC). View Record Details Media by Mark Etheridge.

Elm Cockscomb Aphid galls in Allegany Co., Maryland (5/21/2018). View Record Details Media by Andy Gougherty.

An Elm Cockscomb Aphid gall in Washington Co., Maryland (6/3/2017). View Record Details Media by Rick Borchelt.

Elm Cockscomb Aphid in Howard Co., Maryland (6/27/2018). View Record Details Media by Sue Muller.

Elm Cockscomb Aphid in Allegany Co., Maryland (7/21/2019). (c) Andy Gougherty, some rights reserved (CC BY-NC). View Record Details Media by Andy Gougherty via iNaturalist.

Elm Cockscomb Aphid in Carroll Co., Maryland (6/8/2024). (c) Matthew Beziat, some rights reserved (CC BY-NC). View Record Details Media by Matthew Beziat.

Elm Cockscomb Aphid in Harford Co., Maryland (6/10/2022). (c) skollar, some rights reserved (CC BY-NC). View Record Details Media by skollar via iNaturalist.

Elm Cockscomb Aphid in Charles Co., Maryland (4/29/2023). (c) Deborah Barber, some rights reserved (CC BY-NC). View Record Details Media by Deborah Barber via iNaturalist.

Elm Cockscomb Aphid galls in Montgomery Co., Maryland (5/27/2017). View Record Details Media by Rick Borchelt.