Family Belonolaimidae
 
Tylenchorhynchus Cobb, 1913
 
  Tylenchorhynchus acti Hopper, 1959 (N)
  Tylenchorhynchus aduncus De Guiran, 1967 (S)
  Tylenchorhynchus capitatus Allen, 1955 (N)
  Tylenchorhynchus clarus Allen, 1955 (S)
  Tylenchorhynchus claytoni Steiner, 1937 (N)
  Tylenchorhynchus dubius (Bütschli, 1873) (N, S)
  Tylenchorhynchus ewingi Hopper, 1959 (S)
  Tylenchorhynchus goffarti Sturhan, 1966 (S)
  Tylenchorhynchus huesingi Paetzold, 1958 (S)
  Tylenchorhynchus latus Allen, 1955 (S)
  Tylenchorhynchus maximus Allen, 1955 (S)
  Tylenchorhynchus parvus Allen, 1955 (N, S)
  Tylenchorhynchus striatus Allen, 1955 (S)
  Tylenchorhynchus ventralis (Loof, 1963) (N)
 
Trophurus Loof, 1957
 
  Trophurus scognamiglii Talamè, 1974 (S)
 
Nagelus Thorne & Malek, 1968
 
  Nagelus leptus (Allen, 1955) (N)
  Nagelus obscurus (Allen, 1955) (S)
 
Geocenamus Thorne & Malek, 1968
 
  Geocenamus brevidens (Allen, 1955) (S)
  Geocenamus microdorus (Geraert, 1966) (S)
  Geocenamus nanus (Allen, 1955) (S)
  Geocenamus paniculus Vovlas & Esser, 1990 (N)
  Geocenamus quadrifer (Andrassy, 1954) (N)
 
Amplimerlinius Siddiqi, 1976
 
  Amplimerlinius icarus (Wallace & Greet, 1964) (Si)

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