Author: Undescribed

Order: Nudibranchia  Family: Discodorididae

Maximum Size: 20 mm

Sightings: Anilao, Philippines

_____________________________________________________________________________

Thordisa sp. 05 Undescribed 

Uniform translucent reddish-brown in colour. Notum with evenly distributed, uncrowded, small papillae, white-tipped, many extending into thin tendrils. Those closer to the central notum sited on a raised mound. Rhinophores brown with white apices. Gill not extended but can be seen through translucent mantle surface and appears lighter in colour.

Feeds on sponges upon which it is cryptic.

David A. Mullins – January 2025

References:
– Chan, J. M. & Gosliner, T. M. (2007). Preliminary Phylogeny of Thordisa Nudibranchia: Discodorididae) with Descriptions of Five New Species. The Veliger, 48(4): 284–308.

– Gosliner, T. M., Valde ́s, A ́. & Behrens, D. W. (2018). Nudibranch & Sea Slug Identification – Indo-Pacific, 2nd Edition. New World Publications, Jacksonville, Florida, USA.

– Donohoo, S. A. & Gosliner, T. M. (2024). Variability in the white spot: a new genus and species of Discodorididae (Nudibranchia) from the central and western Pacific Ocean. Journal of Molluscan Studies 90: eyad027