Subfamily SPIRINIINAE Gerlach & Murphy, 1965

Diagnosis (from Decraemer & Smol 2006). Desmodoridae . Body cuticle finely striated. Head not demarcated as a cephalic capsule. Amphideal fovea a simple spiral, usually located far anteriorly on the body. Buccal cavity small, from minute to medium-sized, with a distinct or a minute dorsal tooth; two small ventrosublateral teeth may be present or absent.

List of valid genera (Cavalcanti et al. 2009)

Alaimonema Cobb, 1920

Chromaspirina Filipjev, 1918 Metachromadora Filipjev, 1918 Onyx Cobb, 1891

Papillonema Verschelde et al., 1995 Parallelocoilas Boucher, 1975 Perspiria Wieser and Hopper, 1967 Polysigma Cobb, 1920

Pseudometachromadora Timm, 1952 Sigmophoranema Hope & Murphy, 1972 Spirinia Gerlach, 1963

Spirodesma Cavalcanti et al., 2009