Atagema sp. (Kelaart, 1858)

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

* Atagema sp. (Kelaart, 1858) Figure 12C

Material examined.

One specimen 32 mm, CB.

Ecology.

Observed among rubble in shallow coral reef habitats at night with no observed association with prey. Depth 4-6 m.

Distribution.

Atagema sp. 8 ( Gosliner et al. 2018) is known only from the Philippines.

Remarks.

Externally distinct from Atagema spongiosa (Kelaart, 1858) in being completely translucent pale grey, including the circular pits, separated by ridges, along the mantle. Similar to Atagema sp. 8 ( Gosliner et al. 2018). Individuals from Koh Tao also differ from A. spongiosa in ecology, being observed in shallow reef environments instead of deeper soft sediment habitats.

Figures

Figure 12. A Atagema intecta 25 mm (photograph by Nick Tringham) B Atagema spongiosa 95 mm C Atagema sp. 32 mm D Carminodoris cf. bifurcata 9 mm E Discodoris cebuensis 30 mm (photograph by Kirsty Magson) F Discodoris boholiensis 55 mm G Halgerda bacalusia (unknown size, photograph by Stephan Pelletier) H Jorunna funebris 87 mm I Jorunna sp. 10 mm J Peltodoris murrea 30 mm K, L Platydoris cf. formosa 35 mm, dorsal and ventral views (photographs by Kirsty Magson).