Abstract
The marine halacarid mite genus Halacaropsis Bartsch, 1996 (Acari: Halacaridae) currently comprises four species from the Mediterranean, northern Atlantic, and Australia. A new species, Halacaropsis praecognita n. sp. (Acari: Halacaridae), is described from the rocky shores of south-eastern Africa (Eastern Cape and KwaZulu-Natal). This species possesses the characteristic peg-like setae on leg I and enlarged median claws, but is distinguishable from the other Halacaropsis species by not having toothed median claws on any of the legs.