Gymnodoris cf. nigricolor Baba, 1960

Mehrotra, Rahul, A. Caballer Gutierrez, Manuel, M. Scott, Chad, Arnold, Spencer, Monchanin, Coline, Viyakarn, Voranop & Chavanich, Suchana, 2021, An updated inventory of sea slugs from Koh Tao, Thailand, with notes on their ecology and a dramatic biodiversity increase for Thai waters, ZooKeys 1042, pp. 73-188 : 73

* Gymnodoris cf. nigricolor Baba, 1960 Figure 16C

Material examined.

One specimen 6 mm, SB; one specimen 7 mm, LB.

Ecology.

Recorded exclusively from deeper soft sediment habitats, crawling on the substrate. Depth 19-27 m.

Distribution.

Unknown

Remarks.

Strikingly similar to Gymnodoris nigricolor from Koh Tao in sharing habitat, size, and much of their external morphology except the arc of gills. Both observed specimens, several months and kilometres apart, were found to possess white club-shaped gills instead of black. As such we treat this species as likely distinct.

Figures

Figure 16. A Gymnodoris sp. 3 12 mm B Gymnodoris nigricolor 5 mm C Gymnodoris cf. nigricolor 6 mm D Gymnodoris sp. 4 9 mm E Plocamopherus tilesii 90 mm F Polycera sp. 12 mm G Tambja amakusana 6 mm (photograph by Richard Brinke) H Tambja pulcherrima 40 mm (photograph by Liam Kelly) I Tambja sp. 4 mm (photo by Kaitlyn Harris) J Thecacera sp. 6 mm K Anteaeolidiella sp. 15 mm L Aeolidiopsis harrietae 17 mm.