Goniobranchus alderi

Goniobranchus cf. alderi (Collingwood, 1881)

(Figure 5 J)

Material examined. Eight specimens. MHN-YT87, ZGWS, 10 Dec. 2011, 20m, 25mm; MB28-0 0 4446, ZWH, 0 2 Feb. 2012, 20m, 44mm, collected by S. Bruck; MB28-004620, ZJS, 29 Aug. 2012, 12m, 28mm, collected by J.

Bergman; MB28-004685, ZM, 29 Aug. 2012, 8m, 44mm; MB28-004730, ZD, 18 Aug. 2013, 32m, 20mm; ZMBN117052, 0 6 Jan. 2014, 51m, 26mm; ZMBN119694, ZGWS, 11 Oct. 2014, 19m, 34mm; ZMBN119695, ZA 51, 12m, 38mm.

Habitats. Subtropical rocky reefs and wreck.

Occurrences. Zavora.

Geographic distribution. Western Indian Ocean. Seychelles, Madagascar, South Africa (Gosliner et al. 2008) and Mozambique.

Remarks. This morphotype is part of the Chromodoris tinctorius complex, which needs to be reviewed (Gosliner et al. 2008, 2015). All the specimens examined have identical colour patterns and appear to be the same species. The dorsal colour is white with a red reticulate pattern. The mantle margin is yellow. The rhinophores stalk is white and the lamellae are red-purple, lined in white. The ventral part of the foot is solid white. The dorsal part of the foot is white with red dots. This morphotype appears to be typical of western Indian Ocean specimens (Gosliner et al. 2008).