A checklist of halacarid mites (Acari, Halacaridae) found among ascidians (Tunicata, Ascidiacea) Author Chatterjee, Tapas text Persian Journal of Acarology 2022 2022-04-15 11 2 245 253 journal article 10.22073/pja.v11i2.71867 2251-8169 Copidognathus acutus Newell, 1947 Report found among ascidians – This species was reported among ascidians, mixed hydroids and ascidians in subtidal area of Beaufort, North Carolina , Eastern North America ( Newell 1947 ) . Remarks – This species was also reported in various substrata: among sponges and broken shells perforated by sponges Cliona sp. , algae, hydroids from Eastern North America ( Newell 1947 ). Copidognathus aurorae Newell, 1951 Report found among ascidians – This species has been found from Bering Sea, near Cape Prince of Wales , Alaska in muddy sand and gravel with ascidians ( Newell 1951a ) . Remarks – This species was also reported among algae, sponges, sand and gravel from Alaska , Bering Sea, Arctic Ocean ( Newell 1951a , b).