Halacarus otiosus Bartsch, 1993

Report associated with echinoderms – This species was found in washing of crinoids (Echinodermata, Crinoidea) from 250 m depth of Palmer Archipelago (Bartsch 1993b).

Remarks – Bartsch (1993b) commented that this species is believed to live on other organisms and within scrub-like algae.