Genus Tripylina
Brzeski, 1963
Syn.:  Abunema Khera, 1971

Tripylidae.  Body 0.8 - 1.7 mm long, moderately slender.  Cuticle smooth.  Both cephalic and subcephalic setae arranged in a single circle, the former much longer and stronger than the latter ones.  Buccal denticles comparatively strong.  Female gonad prodelphic, without posterior uterine sac.  Vulva located in 56 - 67% of body length.  Tail 2.5 - 4.5 times as long as anal body diameter, ventrally or first ventrally then dorsally curved.  Males unknown.

Type species:  Tripyla arenicola de Man, 1880 = Tripylina arenicola (de Man, 1880) Brzeski, 1963

Four species:
T. arenicola (de Man 1880) Brzeski, 1963
    Syn.: Tripyla arenicola de Man, 1880
           Tripyla (Trischistoma) arenicola de Man, 1880 (Schneider, 1939)
           Trischistoma arenicola (de Man, 1880) Schuurmans Stekhoven, 1951
           Tripyla minor Cobb, 1893
           Abunema indicum Khera, 1971

T. macroseta (Vinciguerra & La Fauci, 1978) Thalolikhin, 1983
    Syn.: Trischistoma macroseta  Vinciguerra & La Fauci, 1978

T. sheri Brzeski, 1963
    Syn.: Trischistoma sheri (Brzeski, 1963) Brzeski, 1965
           Tripyla (Trischistoma) sheri (Brzeski, 1963) Khera, 1970
           Trischistoma ursulae Argo & Heyns, 1973
           Tripylina ursulae (Argo & Heyns, 1973) Thalolikhin, 1983

T. stramenti (Yeates, 1971) Thalolikhin, 1983
    Syn.: Trischistoma stramenti Yeates, 1971
(Description- Andrássy 1985)