Table 3. Selected diagnostic characters of species of the genus Pseudaraeolaimus Chitwood, 1951 based on literature data supplemented with recent observations.

Characters	P. perplexus	P. ocellatus	P. cylindricauda	P. laminata	P. cassidaigniensis
Body length (mm)	1.08–1.20	0.77–0.93	0.99	2.09	1.36
Amphidial fovea shape	broad loop	narrow loop	narrow loop	narrow loop	narrow loop
Amphid striation	absent	absent	absent	present	absent
Ocelli	absent	present	absent	absent	absent
Cervical setae	two pairs	five pairs	6-7 pairs	six pairs	two pairs
Spicule length (µm)	14	18–19	17	30	NA*
Gubernaculum apophysis	absent	absent	absent	present	NA
Precloacal supplements	1	1	1	?	NA