A female Monkey Slug Moth in Frederick Co., Maryland (7/31/2018).

View Record Details Photo by Mark Etheridge MBP List

A female Monkey Slug Moth in Prince George's Co., Maryland (6/9/2015).

View Record Details Photo by TJ Walters MBP List

A male Monkey Slug Moth in Howard Co., Maryland (6/16/2014).

View Record Details Photo by Richard Orr MBP List

A male Monkey Slug Moth in Worcester Co., Maryland (7/29/2013).

View Record Details Photo by Scott Housten MBP List

A male Monkey Slug Moth in Worcester Co., Maryland (7/29/2013).

View Record Details Photo by Scott Housten MBP List

A male Monkey Slug Moth in Worcester Co., Maryland (7/29/2013).

View Record Details Photo by Scott Housten MBP List

Monkey Slug Moth in Washington Co., Maryland (7/3/2025). (c) Mark Etheridge, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1294094 - Psn: 45)

Monkey Slug Moth in Washington Co., Maryland (7/3/2025). (c) Mark Etheridge, some rights reserved (CC BY-NC).

View Record Details Photo by Mark Etheridge MBP List

Monkey Slug Moths mating in Howard Co., Maryland (7/12/2014). Female is on the left and male is on the right.

View Record Details Photo by Richard Orr MBP List

Monkey Slug Moths mating in Howard Co., Maryland (7/12/2014). Female is to the top and male to the bottom.

View Record Details Photo by Richard Orr MBP List

A Monkey Slug Moth caterpillar in Howard Co., Maryland (8/26/2010).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth caterpillar in Howard Co., Maryland (9/5/2013).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth larva in Howard Co., Maryland (7/22/2015).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth caterpillar in Howard Co., Maryland (9/6/2014).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth larva in Howard Co., Maryland (7/22/2015).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth larva in Howard Co., Maryland (7/29/2015).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth larva in St. Mary's Co., Maryland (10/5/2016).

View Record Details Photo by Bob Cammarata MBP List

A Monkey Slug Moth caterpillar in Montgomery Co., Maryland (9/7/2017).

View Record Details Photo by Bob Cammarata MBP List

A Monkey Slug Moth caterpillar on Wingstem in howard Co., Maryland (9/10/2013).

View Record Details Photo by Richard Orr MBP List

A Monkey Slug Moth in Prince George's Co., Maryland (9/23/2014).

View Record Details Photo by Hugh Vandervoort MBP List

A Monkey Slug Moth larva in Howard Co., Maryland (8/12/2017).

View Record Details Photo by Bill Hubick MBP List

A Monkey Slug caterpillar in Carroll Co., Maryland (9/13/2013).

View Record Details Photo by Anna Letaw MBP List

A Monkey Slug caterpillar in Carroll Co., Maryland (9/13/2013).

View Record Details Photo by Anna Letaw MBP List

The underside of a Monkey Slug Moth caterpillar in Howard Co., Maryland (9/16/2013).

View Record Details Photo by Bonnie Ott MBP List

A Monkey Slug Moth caterpillar and a <em>Conura</em> wasp in Howard Co., Maryland (8/12/2017). (Photo ID: 86083 - Psn: 110)

A Monkey Slug Moth caterpillar and a Conura wasp in Howard Co., Maryland (8/12/2017).

View Record Details Photo by Ashley Bradford MBP List

A Monkey Slug Moth caterpillar in Washington Co., Maryland (9/17/2013).

View Record Details Photo by Bonnie Ott MBP List

Monkey Slug Moth in Howard Co., Maryland (9/10/2022). (c) Judy Gallagher, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 654705 - Psn: 132)

Monkey Slug Moth in Howard Co., Maryland (9/10/2022). (c) Judy Gallagher, some rights reserved (CC BY-NC).

View Record Details Photo by Judy Gallagher MBP List

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Judy Gallagher, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-sa/4.0/'>CC BY-SA</a>). (Photo ID: 928393 - Psn: 132)

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Judy Gallagher, some rights reserved (CC BY-SA).

View Record Details Photo by Judy Gallagher MBP List

Monkey Slug Moth in Howard Co., Maryland (8/26/2024). (c) JSHunter, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1315728 - Psn: 132)

Monkey Slug Moth in Howard Co., Maryland (8/26/2024). (c) JSHunter, some rights reserved (CC BY-NC).

View Record Details Photo by JSHunter via iNaturalist MBP List

A Monkey Slug Moth caterpillar in Frederick Co., Maryland (9/9/2020).

View Record Details Photo by Bob Cammarata MBP List

Monkey Slug Moth in Howard Co., Maryland (8/25/2024). (c) Jim Moore (Maryland), some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 1088289 - Psn: 135)

Monkey Slug Moth in Howard Co., Maryland (8/25/2024). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC).

View Record Details Photo by Jim Moore MBP List

Monkey Slug Moth in Howard Co., Maryland (8/29/2021). (c) Judy Gallagher, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 457020 - Psn: 140)

Monkey Slug Moth in Howard Co., Maryland (8/29/2021). (c) Judy Gallagher, some rights reserved (CC BY-NC).

View Record Details Photo by Judy Gallagher MBP List

Monkey Slug Moth caterpillar in Frederick Co., Maryland (9/4/2022).

View Record Details Photo by Jim Moore MBP List

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Jim Moore (Maryland), some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 887963 - Psn: 145)

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC).

View Record Details Photo by Jim Moore MBP List

A Monkey Slug Moth larva falls prey to a Spined Soldier Bug in Howard Co., Maryland (9/4/2014).

View Record Details Photo by Richard Orr MBP List

Monkey Slug Moth in Frederick Co., Maryland (9/19/2008). (c) Giff Beaton, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 197990 - Psn: 200)

Monkey Slug Moth in Frederick Co., Maryland (9/19/2008). (c) Giff Beaton, some rights reserved (CC BY-NC).

View Record Details Photo by Giff Beaton via iNaturalist MBP List

A Monkey Slug Moth caterpillar in Harford Co., Maryland (10/9/2016).

View Record Details Photo by Bob Cammarata MBP List

A Monkey Slug Moth caterpillar in Baltimore Co., Maryland (9/6/2015).

View Record Details Photo by John Landers MBP List

Map Snapshot

109 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

The Monkey Slug caterpillar is a generalist, and feeds on many different types of trees including oaks, hickories, apples, and cherries.

Seasonality Summary

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Resources

View at iNaturalist Search Google Images Search MBP Facebook posts

View images at BugGuide View in Moth Photographers Group

Citations

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

A female Monkey Slug Moth in Frederick Co., Maryland (7/31/2018). View Record Details Media by Mark Etheridge.

A female Monkey Slug Moth in Prince George's Co., Maryland (6/9/2015). View Record Details Media by TJ Walters.

A male Monkey Slug Moth in Howard Co., Maryland (6/16/2014). View Record Details Media by Richard Orr.

A male Monkey Slug Moth in Worcester Co., Maryland (7/29/2013). View Record Details Media by Scott Housten.

Monkey Slug Moth in Washington Co., Maryland (7/3/2025). (c) Mark Etheridge, some rights reserved (CC BY-NC). View Record Details Media by Mark Etheridge.

Monkey Slug Moths mating in Howard Co., Maryland (7/12/2014). Female is on the left and male is on the right. View Record Details Media by Richard Orr.

Monkey Slug Moths mating in Howard Co., Maryland (7/12/2014). Female is to the top and male to the bottom. View Record Details Media by Richard Orr.

A Monkey Slug Moth caterpillar in Howard Co., Maryland (8/26/2010). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth caterpillar in Howard Co., Maryland (9/5/2013). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth larva in Howard Co., Maryland (7/22/2015). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth caterpillar in Howard Co., Maryland (9/6/2014). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth larva in Howard Co., Maryland (7/22/2015). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth larva in Howard Co., Maryland (7/29/2015). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth larva in St. Mary's Co., Maryland (10/5/2016). View Record Details Media by Bob Cammarata.

A Monkey Slug Moth caterpillar in Montgomery Co., Maryland (9/7/2017). View Record Details Media by Bob Cammarata.

A Monkey Slug Moth caterpillar on Wingstem in howard Co., Maryland (9/10/2013). View Record Details Media by Richard Orr.

A Monkey Slug Moth in Prince George's Co., Maryland (9/23/2014). View Record Details Media by Hugh Vandervoort.

A Monkey Slug Moth larva in Howard Co., Maryland (8/12/2017). View Record Details Media by Bill Hubick.

A Monkey Slug caterpillar in Carroll Co., Maryland (9/13/2013). View Record Details Media by Anna Letaw.

The underside of a Monkey Slug Moth caterpillar in Howard Co., Maryland (9/16/2013). View Record Details Media by Bonnie Ott.

A Monkey Slug Moth caterpillar and a Conura wasp in Howard Co., Maryland (8/12/2017). View Record Details Media by Ashley Bradford.

A Monkey Slug Moth caterpillar in Washington Co., Maryland (9/17/2013). View Record Details Media by Bonnie Ott.

Monkey Slug Moth in Howard Co., Maryland (9/10/2022). (c) Judy Gallagher, some rights reserved (CC BY-NC). View Record Details Media by Judy Gallagher.

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Judy Gallagher, some rights reserved (CC BY-SA). View Record Details Media by Judy Gallagher.

Monkey Slug Moth in Howard Co., Maryland (8/26/2024). (c) JSHunter, some rights reserved (CC BY-NC). View Record Details Media by JSHunter via iNaturalist.

A Monkey Slug Moth caterpillar in Frederick Co., Maryland (9/9/2020). View Record Details Media by Bob Cammarata.

Monkey Slug Moth in Howard Co., Maryland (8/25/2024). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC). View Record Details Media by Jim Moore.

Monkey Slug Moth in Howard Co., Maryland (8/29/2021). (c) Judy Gallagher, some rights reserved (CC BY-NC). View Record Details Media by Judy Gallagher.

Monkey Slug Moth caterpillar in Frederick Co., Maryland (9/4/2022). View Record Details Media by Jim Moore.

Monkey Slug Moth in Carroll Co., Maryland (9/10/2023). (c) Jim Moore (Maryland), some rights reserved (CC BY-NC). View Record Details Media by Jim Moore.

A Monkey Slug Moth larva falls prey to a Spined Soldier Bug in Howard Co., Maryland (9/4/2014). View Record Details Media by Richard Orr.

Monkey Slug Moth in Frederick Co., Maryland (9/19/2008). (c) Giff Beaton, some rights reserved (CC BY-NC). View Record Details Media by Giff Beaton via iNaturalist.

A Monkey Slug Moth caterpillar in Harford Co., Maryland (10/9/2016). View Record Details Media by Bob Cammarata.

A Monkey Slug Moth caterpillar in Baltimore Co., Maryland (9/6/2015). View Record Details Media by John Landers.