New records of nudibranchs and a cephalaspid from Kuwait, northwestern Arabian Gulf (Mollusca, Heterobranchia) Author Nithyanandan, Manickam https://orcid.org/0000-0003-0582-8344 Ecosystem Based Management of Marine Resources, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P. O. Box. 1638, Salmiya 22017, Kuwait nandan.ocean@gmail.com Author Al-Kandari, Manal https://orcid.org/0000-0003-0073-7929 Ecosystem Based Management of Marine Resources, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P. O. Box. 1638, Salmiya 22017, Kuwait Author Mantha, Gopikrishna https://orcid.org/0000-0002-7200-5105 Ecosystem Based Management of Marine Resources, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P. O. Box. 1638, Salmiya 22017, Kuwait text ZooKeys 2021 2021-07-13 1048 91 107 http://dx.doi.org/10.3897/zookeys.1048.66250 journal article http://dx.doi.org/10.3897/zookeys.1048.66250 1313-2970-1048-91 8437650994504B55AFABD7414079B51D 8F66AFC800D45491BC9D5813B128DAA5 Goniobranchus sp. 1 Figure 4 Photographic record. SAASC, Al-Khiran, 23 March 2013, one individual photographed at 3.5 m depth on a rock culvert, R. Dinesh Kumar. Description. The individual has a white body with dark purple spots scattered over the dorsum and mantle margin (Fig. 4 ). A row of orange-yellow mantle glands covers the mantle margin. Rhinophores have a white base and bright orange lamellae gradually extending from the anterior surface up to 1/4 of the dorsal side, and the gills are white with a bright orange midrib. Figure 4. Goniobranchus sp. 1. Photograph R. Dinesh Kumar. Distribution. Kuwait (this study) and Abu Dhabi, UAE Coast (http://medslugs.de/E/Ind-NW/Goniobranchus_sp_10/Goniobranchus_sp_10_01.htm) Remarks. Very similar to G. kitae ( Gosliner 1994 ; see below) and G. tumuliferus (Collingwood, 1881) (see Gosliner et al. 2015 and Mehrotra et al. 2021 ). However, the individual observed in this study differs from both G. kitae and G. tumuliferus by having orange rhinophores with a white base, an orange midrib in the gills, purple spots on the elongated foot, and yellow at the tip of the elongated foot (Fig. 4 ). Probably an undescribed species.