Phasmarhabditis californica is a nematode in the family Rhabditidae.

It is a lethal facultative parasite of terrestrial gastropods (slugs and snails).

[1] First found in invasive slugs in the USA by Tandingan De Ley et al 2016,[1] also known from New Zealand.

Carnaghi et al 2017 finds P. california in Ireland, parasitising a slug endemic to Atlantic Europe, Geomalacus maculosus.

[2]