Definition: Panagrolaiminae. This genus is very inadequately
defined; the only differences from Panagroliamus appear to be that
the vulva is 70% or more (not more than 63% in Panagrolaimus), the
reflexed ovary does not reach as far as the vulva, and the post-vulval
sac can hardly be said to exist at all.
Type species: Plectonchus cuniculari Fuchs, 1930
Plectonchus ateri Fuchs, 1930
Plectonchus ligniperidae Fuchs, 1930