A Black Onion Fly in Anne Arundel Co., Maryland (8/3/2013).

Photo by Jim Brighton MBP List

A Black Onion Fly in Frederick Co., Maryland (7/8/2014).

View Record Details Photo by Bonnie Ott MBP List

A Black Onion Fly in Prince George's Co., Maryland (5/16/2012). Verified by Ken Wolgemuth/BugGuide.

View Record Details Photo by Barbara Thurlow MBP List

Black Onion Fly in Carroll Co., Maryland (5/18/2019). (c) Peter Coffey, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 260116 - Psn: 38)

Black Onion Fly in Carroll Co., Maryland (5/18/2019). (c) Peter Coffey, some rights reserved (CC BY-NC).

View Record Details Photo by Peter Coffey via iNaturalist MBP List

A Black Onion Fly in Harford Co., Maryland (9/27/2014).

View Record Details Photo by Joshua Jones MBP List

A Black Onion Fly in Carroll Co., Maryland (5/17/2011).

View Record Details Photo by Anna Letaw MBP List

Black Onion Fly in Harford Co., Maryland (6/9/2017). (c) Josh Emm, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 686010 - Psn: 45)

Black Onion Fly in Harford Co., Maryland (6/9/2017). (c) Josh Emm, some rights reserved (CC BY-NC).

View Record Details Photo by Josh Emm MBP List

Black Onion Fly in Baltimore Co., Maryland (7/28/2024). (c) Frode Jacobsen, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1075770 - Psn: 45)

Black Onion Fly in Baltimore Co., Maryland (7/28/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC).

View Record Details Photo by Frode Jacobsen MBP List

Black Onion Fly in Prince George's Co., Maryland (8/19/2023). (c) Adrienne van den Beemt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 1191186 - Psn: 45)

Black Onion Fly in Prince George's Co., Maryland (8/19/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY).

View Record Details Photo by Adrienne van den Beemt MBP List

Black Onion Fly in Prince George's Co., Maryland (6/19/2023). (c) Adrienne van den Beemt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by/4.0/'>CC BY</a>). (Photo ID: 1191731 - Psn: 54)

Black Onion Fly in Prince George's Co., Maryland (6/19/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY).

View Record Details Photo by Adrienne van den Beemt MBP List

A Black Onion Fly in Harford Co., Maryland (10/3/2014).

View Record Details Photo by Joshua Jones MBP List

Black Onion Fly in Queen Anne's Co., Maryland (7/14/2020). (c) dansmall, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 188914 - Psn: 55)

Black Onion Fly in Queen Anne's Co., Maryland (7/14/2020). (c) dansmall, some rights reserved (CC BY-NC).

View Record Details Photo by Dan Small MBP List

Black Onion Fly in Caroline Co., Maryland (6/1/2024). (c) Judy Gallagher, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-sa/4.0/'>CC BY-SA</a>). (Photo ID: 1099429 - Psn: 55)

Black Onion Fly in Caroline Co., Maryland (6/1/2024). (c) Judy Gallagher, some rights reserved (CC BY-SA).

View Record Details Photo by Judy Gallagher MBP List

A Black Onion Fly in Howard Co., Maryland (9/22/2012).

Photo by Nancy Magnusson MBP List

Black Onion Fly in Harford Co., Maryland (8/5/2017).

View Record Details Photo by Dave Webb MBP List

A Black Onion Fly in Baltimore City, Maryland (5/17/2007). Determined by Stephen Luk/BugGuide.

View Record Details Photo by Thomas Wilson MBP List

A Black Onion Fly captured in Maryland. Photographed by Wayne Boo.

Photo by USGS PWRC MBP List

A female Black Onion Fly in Prince George's Co., Maryland (6/18/2013). Photo by Wayne Boo, Photoshopping by Dejen Mengis.

View Record Details Photo by USGS PWRC MBP List

A female Black Onion Fly in Prince George's Co., Maryland (6/18/2013).

View Record Details Photo by USGS PWRC MBP List

A Black Onion Fly in Harford Co., Maryland (6/9/2017).

View Record Details Photo by Josh Emm MBP List

Map Snapshot

75 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 Black Onion Fly in Anne Arundel Co., Maryland (8/3/2013). Media by Jim Brighton.

A Black Onion Fly in Frederick Co., Maryland (7/8/2014). View Record Details Media by Bonnie Ott.

A Black Onion Fly in Prince George's Co., Maryland (5/16/2012). Verified by Ken Wolgemuth/BugGuide. View Record Details Media by Barbara Thurlow.

Black Onion Fly in Carroll Co., Maryland (5/18/2019). (c) Peter Coffey, some rights reserved (CC BY-NC). View Record Details Media by Peter Coffey via iNaturalist.

A Black Onion Fly in Harford Co., Maryland (9/27/2014). View Record Details Media by Joshua Jones.

A Black Onion Fly in Carroll Co., Maryland (5/17/2011). View Record Details Media by Anna Letaw.

Black Onion Fly in Harford Co., Maryland (6/9/2017). (c) Josh Emm, some rights reserved (CC BY-NC). View Record Details Media by Josh Emm.

Black Onion Fly in Baltimore Co., Maryland (7/28/2024). (c) Frode Jacobsen, some rights reserved (CC BY-NC). View Record Details Media by Frode Jacobsen.

Black Onion Fly in Prince George's Co., Maryland (8/19/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY). View Record Details Media by Adrienne van den Beemt.

Black Onion Fly in Prince George's Co., Maryland (6/19/2023). (c) Adrienne van den Beemt, some rights reserved (CC BY). View Record Details Media by Adrienne van den Beemt.

A Black Onion Fly in Harford Co., Maryland (10/3/2014). View Record Details Media by Joshua Jones.

Black Onion Fly in Queen Anne's Co., Maryland (7/14/2020). (c) dansmall, some rights reserved (CC BY-NC). View Record Details Media by Dan Small.

Black Onion Fly in Caroline Co., Maryland (6/1/2024). (c) Judy Gallagher, some rights reserved (CC BY-SA). View Record Details Media by Judy Gallagher.

A Black Onion Fly in Howard Co., Maryland (9/22/2012). Media by Nancy Magnusson.

Black Onion Fly in Harford Co., Maryland (8/5/2017). View Record Details Media by Dave Webb.

A Black Onion Fly in Baltimore City, Maryland (5/17/2007). Determined by Stephen Luk/BugGuide. View Record Details Media by Thomas Wilson.

A Black Onion Fly captured in Maryland. Photographed by Wayne Boo. Media by USGS PWRC.

A female Black Onion Fly in Prince George's Co., Maryland (6/18/2013). Photo by Wayne Boo, Photoshopping by Dejen Mengis. View Record Details Media by USGS PWRC.

A female Black Onion Fly in Prince George's Co., Maryland (6/18/2013). View Record Details Media by USGS PWRC.

A Black Onion Fly in Harford Co., Maryland (6/9/2017). View Record Details Media by Josh Emm.