Doriprismatica cf. atromarginata ( Cuvier, 1804 )

Tibiriçá, Yara, Pola, Marta & Cervera, Juan Lucas, 2017, Astonishing diversity revealed: an annotated and illustrated inventory of Nudipleura (Gastropoda: Heterobranchia) from Mozambique, Zootaxa 4359 (1), pp. 1-133 : 21

Doriprismatica cf. atromarginata ( Cuvier, 1804)

( Figures 4 K–L )

Material examined. Four specimens. MB28-004575, ZY, 17 Jun. 2012, 34m, 9mm; MB28-004899, NKA, 10 Jun. 2014, 30m, 24mm, collected by J. Wright; MB28-004908, NKA, 13 Jun. 2014, 17m, 70mm; MHN-YT1357, NKA, 13 Jun. 2014, 17m, 52mm.

Habitats. Subtropical rocky reefs and tropical coral reefs.

Occurrences. Ponta do Ouro, Zavora and Nuarro.

Geographic distribution. Indo-west, central Pacific. French Polynesia ( Gosliner 1987), Japan ( Baba 1949), China, Solomon Islands ( Gosliner 1987), Papua New Guinea, Australia ( Rudman 1986b), Sumatra, Indonesia ( Debelius 1996), Thailand ( Mehrotra & Scott 2015), Philippines, Red Sea, South Africa ( Gosliner 1987), Tanzania ( Rudman 1986b) and Mozambique ( King & Fraser 2014).

Remarks. Two distinct morphotypes were found. The smaller specimen ( Fig. 4 K ) is white with a thin black edge to the mantle, as well as on the gill and rhinophoral pockets. This colour pattern is similar to the juvenile form of Doriprismatica atromarginata described by Rudman (1986b) or may represent Doriprismatica paladentata (Rudman, 1986) . Because D. paladentata is so far only recorded to the western Pacific Ocean (Gosliner et al. 2015) and these two species are externally similar, further analyses are needed to confirm its identification. All other specimens are similar to that described by Rudman (1986) from Tanzania with slight differences in the hue of the mantle and marginal bands ( Fig. 4 L ); More significantly, specimens examined by Rudman (1986) had only a few scattered spots on the dorsum, while in the Mozambican specimens the dorsum and the foot are covered by gold spots. The specimen illustrated in Gosliner (1987, p. 83) from South Africa is identical to those from Mozambique. Specimens from the Pacific often lack spots (e.g. Gosliner et al. 2008, Matsuda & Gosliner 2017) Thus, additional studies are needed to compare the different morphotypes and verify their correct distribution.

Figures

FIGURE 4. A, Chromodoris aspera (MB28-004952). B,Chromodoris africana (MB28-004554). C, Chromodoris cf. boucheti (MB28-004929). D, Chromodoris hamiltoni (MB28-004769). E, Chromodoris mandapamensis (MB28-004931). F, Chromodoris quadricolor (MB28-005040). G, Chromodoris strigata (MB28-004884). H, Chromodoris sp. 1 (MB28-004644). I, Chromodoris sp.2 (MB28-004845).J,Diversidoris crocea (MB28-005024).K–L, Doriprismaticacf. atromarginata(MB28- 004575 and MB28-004908, respectively).