Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Judy Gallagher, some rights reserved (CC BY-SA).

Slippery Elm Gall Aphid in Caroline Co., Maryland (5/27/2025). (c) Sylvan Kaufman, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Anne Arundel Co., Maryland (6/14/2024). (c) karenmcdonald, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Caroline Co., Maryland (5/27/2025). (c) Sylvan Kaufman, some rights reserved (CC BY-NC).

Slippery Elm Gall Aphid in Caroline Co., Maryland (5/27/2025). (c) Sylvan Kaufman, some rights reserved (CC BY-NC).

9 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.

Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Ashley M Bradford, some rights reserved (CC BY-NC). View Record Details Media by Ashley Bradford.

Slippery Elm Gall Aphid in Garrett Co., Maryland (6/10/2023). (c) Judy Gallagher, some rights reserved (CC BY-SA). View Record Details Media by Judy Gallagher.

Slippery Elm Gall Aphid in Caroline Co., Maryland (5/27/2025). (c) Sylvan Kaufman, some rights reserved (CC BY-NC). View Record Details Media by Sylvan Kaufman via iNaturalist.

Slippery Elm Gall Aphid in Anne Arundel Co., Maryland (6/14/2024). (c) karenmcdonald, some rights reserved (CC BY-NC). View Record Details Media by karenmcdonald via iNaturalist.

Slippery Elm Gall Aphid in Caroline Co., Maryland (5/27/2025). (c) Sylvan Kaufman, some rights reserved (CC BY-NC). View Record Details Media by Sylvan Kaufman via iNaturalist.