Eastern Tiger Swallowtail Pterourus glaucus Linnaeus, 1758    Synonyms: 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 1,452 records in the project database.

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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)

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 (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)

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

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)

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)

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

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

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


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