Swift River Cruiser

Place name abbreviations: MPEA - Middle Patuxent Environment Area; PRSP - Patuxent River State Park; PVSP - Patapsco River Valley State Park; WMA - Wildlife Management Area.

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Legend:

Species common name
Scientific name
Length (in inches; M and F if different) Flight season
Relative abundance
Habitat.


Swift River Cruiser
Macromia illinoiensis
2.0-2.4" L-May — L-Aug
Common.
Subspecies and hybrids
can only be distinguished
in hand!
Habitat: Rivers and streams; rocky, gravel-bottomed creeks and rivers. More active in morning. Forages along forest edges and dirt roads at 3-6'. Late afternoon feeding swarms. M.i. georgina (Georgia River Cruiser): From eastern MD to Piedmont/ Coastal Plain interface. M. i. illinoiensis (Illinois River Cruiser): From western MD to Piedmont/Coastal Plain interface. Hybrids occur in Howard County!
Swift River Cruiser

Male
July 2, 2013
Daniels Road, PVSP
Bonnie Ott

Swift River Cruiser (exuviae)

Male
July 2, 2013
Daniels Road, PVSP
Bonnie Ott

Swift River Cruiser

Male
May 27, 2012
Woodmark
Mike McClure

Swift River Cruiser

Male
July 3, 1997
Patuxent River State Park
Bob Solem

Swift River Cruiser

Male
August 26, 1996
Browns Bridge, Rocky Gorge Reservoir
Bob Solem

Swift River Cruiser

Male
August 12, 2005
Gorman NRA
June Tveekrem

Swift River Cruiser

Male
August 12, 2005
Gorman NRA
June Tveekrem

Swift River Cruiser (exuviae)

Exuviae
July 8, 1999
Gorman NRA
Jo Solem