Species (24)
- Thecotheus setisperma Le Gal 1963
- Thecotheus cinereus (P. Crouan & H. Crouan) Chenant. 1918
- Thecotheus himalayensis S.C. Kaushal 1980
- Thecotheus crustaceus (Starbäck) Aas & N. Lundq. 1992
- Thecotheus holmskjoldii (E.C. Hansen) Eckblad 1968
- Thecotheus lundqvistii Aas 1992
- Thecotheus neoapiculatus Doveri & Coué 2008
- Thecotheus keithii (W. Phillips) Aas 1992
- Thecotheus pelletieri (P. Crouan & H. Crouan) Boud. 1869
- Thecotheus pallens (Boud.) Kimbr. 1969
- Thecotheus strangulatus (Velen.) Aas & N. Lundq. 1992
- Thecotheus platyapiculatus I. Kušan & Mato?ec 2015
- Thecotheus uncinatus Aas 1992
- Thecotheus viridescens E. Ludw. 1989
- Thecotheus rivicola (Va?ek) Kimborough & Pfister 1973
- Thecotheus agranulosus Kimbr. 1969
- Thecotheus biocellatus (Petr.) Aas 1992
- Ascophanus incanus (W. Phillips) Sacc. 1889
- Ascophanus cinereus (P. Crouan & H. Crouan) Boud. 1869
- Ascophanus isabellinus Clem. 1901
- Psilopezia rivicola Va?ek 1949
- Ascophanus pallens Boud. 1887
- Ascobolus cinereus P. Crouan & H. Crouan 1867
- Ascobolus incanus W. Phillips 1877