P. spinata (MacGillivray, 1893)

– Smynthurus spinatus MacGillivray, 1893: 127

YT Skidmore 1995

BC Spencer 1948; Christiansen & Bellinger 1981, 1998; Skidmore 1995; Cannings & Scudder 2005; Cannings 2010

MB Bird 1930; Maynard 1951; Scott 1965; Christiansen & Bellinger 1981, 1998; Skidmore 1995

ON James 1933; Judd 1949; Maynard 1951; Scott 1965; Christiansen & Bellinger 1981, 1998; Skidmore 1995

QC Skidmore 1995

NS Stach 1966; Christiansen & Bellinger 1981, 1998; Skidmore 1995

NF Stach 1966; Christiansen & Bellinger 1981, 1998; Skidmore 1995

General distribution: Nearctic.