Phyllidiopsis monacha
{{Short description|Species of gastropod}}
{{Speciesbox
| image = Phyllidiopsis monacha (10.3897-zookeys.1006.59732) Plate 19.jpg
| image_caption =
| taxon = Phyllidia monacha
| authority = Yonow, 1986Yonow, N. (1986) Red Sea Phyllidiidae (Mollusca: Nudibranchia) with descriptions of new species. Journal of Natural History 20 : 1401-1428.
| synonyms = Phyllidia monacha Yonow, 1986
}}
Phyllidia monacha is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.Rosenberg, G. (2015). [http://www.marinespecies.org/aphia.php?p=taxdetails&id=599551 Phyllidia monacha Yonow, 1986.] In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-11-14.
Distribution
This species was described from Creek, Jeddah, Red Sea {{coords|21|44|N|39|07|E}}. It is endemic to the Red Sea.Rudman, W.B., 2007 (March 26) [http://www.seaslugforum.net/factsheet/phylmona Phyllidiopsis monacha (Yonow, 1986).]
Description
This nudibranch has a white dorsum with a pattern of black and orange. The black pigment forms an irregular ring around the middle of the back with radiating lines extending to the mantle edge. The centre of the back and the edges of the mantle between the black markings have patches of orange-yellow. The rhinophores are also orange-yellow. It is a small Phyllidiid, growing to 20 mm in length.Yonow, N., 2008. Sea Slugs of the Red Sea. Pensoft Series Faunistica, Volume 74. Sofia (Bulgaria) : Pensoft Publishers, p.223.
Diet
This species feeds on a sponge.