White-M Hairstreak Parrhasius m-album (Boisduval & Leconte, 1833)

Status:

The White-M Hairstreak (Parrhasius m-album), with its relatively large size, and its seldom seen, brilliant blue upperside, is an interesting and unusual representative of the Maryland Lycaenidae. The genus Parrhasius is actually largely tropical in distribution. This species, which has been expanding northward in recent years (Glassberg 1999), occurs statewide. This butterfly flies from late April, and again in August to September (two or three broods) (Butterflies of Maryland: A Biological Summary and Checklist by Lynn Davidson & Richard Smith).

Description:

The White-M Hairstreak is named for the prominent white 'M' marking on the hindwing. There is also a small reddish spot adjacent to the M, and a diagnostic isolated white spot near the leading edge of the hindwing. The uppersides of the wings, normally visible only in flight, or when it briefly opens them while basking, are a vivid, brilliant blue (Brock & Kaufman, 2003).

Where to find:

Edges and openings in oak forests. Often seen nectaring at flowers along roadsides through forest.

Relationships:

White-M Hairstreak uses various oaks (Quercus) as larval hosts. In West Virginia, it frequently uses White Oak (Quercus alba) (Allen 1997).

There are 60 records in the project database.

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QACN TA DO WI SOWO 
A White-M Hairstreak in Cecil Co., Maryland (9/3/2012). Photo by Mark Johnson. (MBP list)

A fresh White-M Hairstreak in Howard Co., Maryland (9/10/2013). Photo by Bonnie Ott. (MBP list)

A White-M Hairstreak in Anne Arundel Co., Maryland (4/28/2015). Photo by Richard Orr. (MBP list)

A White-M Hairstreak in Washington Co., Maryland (2007). First county record. Photo by Hans Holbrook. (MBP list)

A White-M Hairstreak at Point Lookout SP, Maryland (9/22/2012). Photo by Mikey Lutmerding. (MBP list)

A White-M Hairstreak in Baltimore City, Maryland (9/24/2006). Photo by Thomas Wilson. (MBP list)

A White-M Hairstreak in Worcester Co., Maryland (7/9/2017). Photo by Jared Satchell. (MBP list)

A White-M Hairstreak in Howard Co., Maryland (10/2/2014). Photo by Jim Wilkinson. (MBP list)

A White-M Hairstreak in Anne Arundel Co., Maryland (4/14/2012). Photo by Rod Burley. (MBP list)

A White-M Hairstreak in Talbot Co., Maryland (8/4/2016). Photo by Erica Weick. (MBP list)


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