Bornella johnsonorum Pola, Rudman & Gosliner, 2009

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

* Bornella johnsonorum Pola, Rudman & Gosliner, 2009 Figure 19L

Material examined.

One specimen 35 mm, CB.

Ecology.

On rocks and under rubble, in particular under skeletons of dead fungiid corals, in shallow coral reef habitats. Depth 2-8 m.

Distribution.

Bornella johnsonorum is known from the Marshall Islands in the Pacific ( Pola et al. 2009) and maybe from Réunion Island and the Red Sea and in the western Indian Ocean ( Bidgrain 2009; Yonow 2015). Here documented as a first record for Thai waters.

Remarks.

The present species matches the external description of the species ( Pola et al. 2009) very closely, although lacking any signs of orange reticulation. Specimens from Koh Tao have six paired dorsal processes and a single, extremely small, unpaired dorsal process near the tip of the tail.

Figures

Figure 19. A Armina scotti 41 mm B Dermatobranchus caeruleomaculatus 55 mm C Dermatobranchus dendronephthyphagus 40 mm D Dermatobranchus fortunatus 11 mm E Dermatobranchus semilunus 33 mm (photograph by Pau Urgell Plaza) F Dermatobranchus cf. striatus 14 mm G, H Dermatobranchus sp. 1 32 mm (G) and 28 mm (H) I, J Dermatobranchus sp. 2 27 mm K Bornella hermanni 12 mm L Bornella johnsonorum 35 mm.