Pseudaraeolaimus Chitwood, 1951

Holovachov, Oleksandr, 2017, Belgopeltula belgica (Vincx & Gourbault, 1992) gen. et comb. nov. and Mudwigglus micramphidium sp. nov. from the west coast of Sweden, and reappraisal of the genus Pseudaraeolaimus Chitwood, 1951 (Nematoda: Araeolaimida: Diplopeltidae), European Journal of Taxonomy 383, pp. 1-21 : 15-16

Key to species of Pseudaraeolaimus Chitwood, 1951

See Table 3 for additional diagnostic characters.

1. Body 2 mm long; amphidial fovea with transverse striation .............................................................. ............................................................................................... P. laminata ( Vitiello, 1972) comb. nov.

– Body shorter than 1.5 mm long; amphidial fovea without transverse striation ................................ 2

2. Ocelli present .................................................................................................. P. ocellatus Kito, 1981

– Ocelli absent ..................................................................................................................................... 3

3. Amphidial fovea a broad loop, less than 1.5 times long as it is wide ... P. perplexus Chitwood, 1951

– Amphidial fovea a narrow loop, more than 3 times long as it is wide ............................................. 4

* – not available, specimens of particular sex are unknown

4. Cervical setae short, only two pairs at level with amphidial fovea .................................................... ................................................................................... P. cassidaigniensis ( Vitiello, 1972) comb. nov.

– Cervical setae long, two pairs at level with amphidial fovea and 4–5 pairs at level with midpharynx .................................................................... P. cylindricauda ( Allgén, 1932) comb. nov.