W. arida Fjellberg, 1991

– Willemia arida Fjellberg, 1991a: 205

– Willemia granulata form b Fjellberg, 1985: 64

AK Fjellberg 1985 as granulata f. b, 1991; Skidmore 1995; Babenko & Fjellberg 2006

BC Fjellberg 1991a; Skidmore 1995; Cannings & Scudder 2005; Cannings 2010; Lindo 2014

AB Fjellberg 1991a; Skidmore 1995; Lindo 2014; Stebaeva et al. 2016

Remarks: See also W. granulata below.

General distribution: Nearctic.