Arctonoe vittata

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Red-banded commensal scaleworm:
Red-banded commensal scaleworm (Arctonoe vittata): This commensal scaleworm is commonly found on the underside of Leather star (Dermasterias imbricata) and Mottled star (Evasterias troscheli). It is also found on a variety of other hosts, including sea cucumbers and Gumboot chiton (Cryptochiton stelleri).

Arctonoe vittata defends its host, and keeps it somewhat cleaner.

Arctonoe vittata's "red band" isn't always obvious, but when present is a good indication of the species at hand. Other species of Arctonoe generally have ruffled elytra.

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