Chromodoris lochi Rudman, 1982

ミスジアオイロウミウシ Chromodoris lochi

Location
Kirby's Rock, Anilao, Philippines
Date
2016/04/20
Length
30mm
Depth
10.0m
Water temperature
28.0℃

Description

Mantle ground colour white to pale bluish white with a thin white edge band. A thin black line runs around the front of the mantle, in front of the rhinophores, and joins along each side behind the gills; a separate median black line runs from between the rhinophores to the gill pocket (often broken or reduced centrally). Gills and rhinophores are pale watery yellow to pale orange (regionally variable, sometimes tinged red or paler). Up to three thin black lines run along each side of the body. The mantle is elongate with a narrow overlap, giving a spatulate shape. Few gills (rarely more than 5-6) form a posteriorly-open circle and are held vertically. Reaches 30 mm alive (15-25 mm preserved).

Distribution

Type locality is Beqa Lagoon, Stuart Island, Fiji (5 m depth, November 1972). Recorded by Rudman from the Great Barrier Reef (Lizard Island, Fish Rock), Papua New Guinea (Port Moresby), Vanuatu (Espiritu Santo, Efate), and Fiji. Subsequent records extend to the Philippines, Singapore, New Caledonia, the Solomon Islands, Tonga, and the Society Islands — a widespread tropical western Pacific species.

Etymology

The specific epithet lochi honours Ian Loch, Technical Officer in the Malacology Department of the Australian Museum, who collected and photographed extensive opisthobranch material in Queensland for the museum (verbatim from the original description).

Remarks

Closely resembles Chromodoris boucheti and Chromodoris willani (described in the same paper) in its three-black-line pattern, but is distinguished externally by (1) a spatulate (not elongate-oval) mantle and (2) pale orange-yellow gills and rhinophores (versus translucent brown with white patches in Chromodoris willani).

References

Featured in this book

Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc. cover

Terrence Gosliner, Ángel Valdés and David Behrens. (2018). Nudibranch and Sea Slug Identification Indo-Pacific 2nd Edition. New World Pubns Inc.

New World Publications

This species, Chromodoris lochi, is included in the book.

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Academic Database

Sea slug observation data is available in international marine biodiversity databases.

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