Definition: Similar to Aphelenchoides in many respects
but the tails of both sexes are elongate filiform and not short conical.
In addition the stylet is usually long and slender, ranging from 10u
up to 27u, and is without basal knobs except in 2 species where
small ones are present; the oesophageal glands lobe is long and prominent
and the first bulb is oblong or long oval with prominent valve plates.
A post-vulvar sac present or absent. The spicules are somewhat differently
shaped from those of Aphelenchoides. The proximal end of the
transverse bar is prolonged with the dorsal limb into a prominent apex,
and there is always a prominent rostrum at the other end of the transverse
bar. Although the published figures of the spicules show only their
outline there is a dorsal and a ventral limb similar to those of the aphelenchoid
spicules. There are papillae on the male tail; the basic pattern
seems to be: a pre-anal pair at about the level of the proximal ends of
the spicules (there may be only a single papilla there), an adanal pair,
and either 1 or 2 pairs post-anal on the conical part of the tail.
Type species: Seinura mali Fuchs, 1931
Syn.: Aphelenchoides mali (Fuchs, 1931) Goodey, 1951
(Description- Goodey, 1963)