Clubtails:  Genus Stylurus
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Laura's Clubtail  (male)                                               Stylurus laurae
Patapsco River
Baltimore County, Maryland
July 5, 1999
Photographer:  Richard Orr
Laura's Clubtail (female)                                            Stylurus laurae
Little Patuxent River
Anne Arundel County, Maryland
July 4, 1998
Photographer:  Richard Orr
Russet-tipped Clubtail (male)                                    Stylurus plagiatus
Pocomoke River
Worcestor County, Maryland
August 24, 1999
Photographer:  Gene Cooley
Arrow Clubtail                                                                Stylurus spiniceps
Potomac River
Washington County, Maryland
June 30, 2002
Photographer:  Richard Orr
Zebra Clubtail (larva)                                                   Stylurus scudderi
Casselman River
Garrett County, Maryland
May 15, 2010
Photographer:  Richard Orr