Eastern Tiger Swallowtail Pterourus glaucus Linnaeus, 1758    Synonyms: Hodges #4176, Papilio glaucus.
Kingdom Animalia   >   Phylum Arthropoda   >   Class Insecta   >   Order Lepidoptera   >   Family Papilionidae   >   Genus Pterourus   

Status:

Eastern Tiger Swallowtail (Papilio glaucus) is a widespread and common butterfly, found throughout Maryland. The pale yellow coloration, with blackish striping, is distinctive in most of our area. In western Maryland, care needs to be taken in discerning Eastern Tiger Swallowtail from Appalachian Tiger Swallowtail (Papilio appalachiensis), which is very similar.

Relationships:

Host plants include a variety of species including American Hornbeam, White Ash, Green Ash, Common Spicebush, Tulip Poplar, Sweetbay, Quaking Aspen, Black Cherry, Chokecherry, Black Oak, Sassafras, Common Lilac, and American Basswood (Database of the World's Lepidopteran Hostplants).

There are 3,245 records in the project database.

View images at BugGuide

View taxon at iNaturalist

View taxon at NatureServe

Search Google Images

Search MBP Facebook posts (beta | requires login)


[View seasonality details]
GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO 
A female Eastern Tiger Swallowtail in Howard Co., Maryland (8/4/2013). Photo by Richard Orr. (MBP list)

An Eastern Tiger Swallowtail in Harford Co., Maryland (8/9/2015). Photo by Barbara Speckart. (MBP list)

A dark morph female Eastern Tiger Swallowtail in Frederick Co., Maryland (8/20/2013). Photo by Richard Orr. (MBP list)

An Eastern Tiger Swallowtail in Howard Co., Maryland (7/19/2015). Photo by Kevin Heffernan. (MBP list)

An Eastern Tiger Swallowtail in Baltimore Co., Maryland (8/19/2014). Photo by Frode Jacobsen. (MBP list)

An Eastern Tiger Swallowtail in Prince George's Co., Maryland (9/5/2016). Photo by Jim Moore. (MBP list)

An Eastern Tiger Swallowtail in Prince George's Co., Maryland (4/29/2015). Photo by Barbara Thurlow. (MBP list)

An Eastern Tiger Swallowtail found nectaring on Pickerweed in Worcester Co., Maryland (7/15/2006). Photo by Jim Brighton. (MBP list)

An Eastern Tiger Swallowtail flying in Baltimore Co., Maryland (8/8/2014). Photo by Frode Jacobsen. (MBP list)

A dark-form female Eastern Tiger Swallowtail in Frederick Co., Maryland (4/24/2014). Photo by Richard Orr. (MBP list)

An Eastern Tiger Swallowtail in Montgomery Co., Maryland (7/18/2015). Photo by Dave Kidwell. (MBP list)

An intermediate form female Eastern Tiger Swallowtail in Dorchester Co., Maryland (9/4/2016). Photo by Jim Brighton. (MBP list)

An intermediate form female Eastern Tiger Swallowtail in Frederick Co., Maryland (8/20/2013). Photo by Richard Orr. (MBP list)

Several Eastern Tiger Swallowtails "puddling" in Garrett Co., Maryland (5/3/2015). Photo by Jim Stasz. (MBP list)

Eastern Tiger Swallowtail in Montgomery Co., Maryland (8/14/2022). (c) piscsuresque, some rights reserved (CC BY-NC). Photo by piscsuresque via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Anne Arundel Co., Maryland (8/23/2015). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

An Eastern Tiger Swallowtail (right) with Zebra Swallowtail (left) in Washington Co., Maryland (5/17/2014). Photo by Linda Lewis. (MBP list)

Eastern Tiger Swallowtail in Washington Co., Maryland (8/5/2017). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Anne Arundel Co., Maryland (6/8/2019). (c) Timothy Reichard, all rights reserved. Photo by Timothy Reichard. (MBP list)

Eastern Tiger Swallowtails in Harford Co., Maryland (7/25/2019). Photo by Josh Emm. (MBP list)

Eastern Tiger Swallowtail in Montgomery Co., Maryland (6/12/2021). (c) Holly J., some rights reserved (CC BY-NC). Photo by hollyjaro via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Washington Co., Maryland (7/19/2015). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

An Eastern Tiger Swallowtail in Washington Co., Maryland (7/21/2019). Photo by Mark Etheridge. (MBP list)

An early instar caterpillar of an Eastern Tiger Swallowtail on Sweetbay in Wicomico Co., Maryland (6/15/2013). Photo by Jim Brighton. (MBP list)

Eastern Tiger Swallowtail in Baltimore Co., Maryland (8/1/2020). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

An Eastern Tiger Swallowtail in Worcester Co., Maryland (3/28/2013). Photo by Scott Housten. (MBP list)

An Eastern Tiger Swallowtail larva in Harford Co., Maryland (10/15/2016). Photo by Dave Webb. (MBP list)

An Eastern Tiger Swallowtail caterpillar feeding on Sweetbay in St. Mary's Co., Maryland (6/2/2019). Photo by Josh Emm. (MBP list)

A dark morph Eastern Tiger Swallowtail in Montgomery Co., Maryland (8/15/2021). (c) Gary House, some rights reserved (CC BY-NC). Photo by Gary House via iNaturalist. (MBP list)

An Eastern Tiger Swallowtail prepares to pupate on a Black Cherry leaf in Howard Co., Maryland (8/24/2013). Photo by Richard Orr. (MBP list)

An Eastern Tiger Swallowtail caterpillar in Garrett Co., Maryland (8/14/2011). Photo by Boyer and McDowell. (MBP list)

An Eastern Tiger Swallowtail in Anne Arundel Co., Maryland (8/1/2019). Photo by David Illig. (MBP list)

Eastern Tiger Swallowtail in Anne Arundel Co., Maryland (8/1/2019). Photo by David Illig. (MBP list)

Eastern Tiger Swallowtail in Howard Co., Maryland (9/28/2019). (c) Judy Gallagher, some rights reserved (CC BY-NC). Photo by Judy Gallagher. (MBP list)

Eastern Tiger Swallowtails in Montgomery Co., Maryland (7/1/2021). Photo by Aydin Orstan. (MBP list)

An Eastern Tiger Swallowtail caterpillar in Frederick Co., Maryland (9/17/2020). Photo by Mark Etheridge. (MBP list)

Eastern Tiger Swallowtail falling prey to a Dragonhunter in Garrett Co., Maryland (Date obscured). (c) Josh Emm, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Eastern Tiger Swallowtail in Allegany Co., Maryland (4/15/2022). (c) rborchelt, some rights reserved (CC BY-NC). Photo by rborchelt via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Allegany Co., Maryland (4/15/2022). (c) rborchelt, some rights reserved (CC BY-NC). Photo by rborchelt via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Baltimore Co., Maryland (7/10/2021). (c) wendyjalexander, some rights reserved (CC BY-NC-ND). Photo by Wendy Alexander. (MBP list)

Eastern Tiger Swallowtail in Baltimore Co., Maryland (8/21/2021). (c) sentientone, some rights reserved (CC BY-NC). Photo by sentientone via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Frederick Co., Maryland (7/20/2023). (c) bratliff5, some rights reserved (CC BY-NC). Photo by bratliff5 via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Montgomery Co., Maryland (7/14/2023). (c) karyorelicta, all rights reserved. Photo by karyorelicta via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Harford Co., Maryland (7/21/2023). (c) jmcardle, some rights reserved (CC BY-NC). Photo by jmcardle via iNaturalist. (MBP list)

Eastern Tiger Swallowtail in Anne Arundel Co., Maryland (8/19/2023). (c) Cathy Fahey, some rights reserved (CC BY-NC). Photo by Cathy Fahey via iNaturalist. (MBP list)

An Eastern Tiger Swallowtail caterpillar in Howard Co., Maryland (8/31/2018). Photo by Bob Cammarata. (MBP list)

Eastern Tiger Swallowtails in Baltimore Co., Maryland (6/1/2021). Photo by Richard Crook. (MBP list)

An Eastern Tiger Swallowtail caterpillar in Garrett Co., Maryland (9/15/2019). Photo by Boyer and McDowell. (MBP list)


View All Images

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