Trapania toddi Rudman, 1987

Jung, Dae-Wui, Kil, Hyun Jong, Nam, Eunjung & Kim, Hyeonggeun Kim and Chang-Bae, 2022, Redescription of three trapanian nudibranchs (Nudibranchia, Goniodorididae) from Korea with a key to the species, Journal of Species Research 11 (3), pp. 169-173 : 172-173

Trapania toddi Rudman, 1987

ƚğẕnj갯ḓḝḵḍḑ ( Fig. 3 )

Trapania toddi Rudman, 1987: 204 - 206 , figs. 2E, 3D, 12C, 13; Gosliner et al., 2008: 138; 2015: 144.

Trapania cf. toddi Kil et al., 2020: 232 , 233.

Type locality. Hong Kong ( China) .

Distribution. Korea, China ( Hong Kong), Red Sea, Australia.

Material examined. 2 individuals (NIBRIV0000882 625), Gonghyeonjin-ri , Jugwang-myeon , Goseong-gun, Gangwon-do, Korea, 17 July 2020, S.G. Ra, with SCUBA ; 1 individual (KMBLND00117), Nagok-ri , Buk-myeon, Uljin-gun, Gyeongsangbuk-do, Korea, 31 May 2020, coll. D.-W. Jung, with SCUBA .

Description. Body limaciform and convex, the body length of the preserved specimen 5 - 9 mm. Ground color opaque white. Irregular-sized and reticulated patterned brown markings scattered on dorsal surface except the foot ( Fig. 3A, B ). Numerous white or pale-yellow specks present on the dorsum. The tip of rhinophores translucent with white specks. Clavus lamellated; upper half of the clavus pale orange to light brown in color and lower half opaque white. Stalk smooth, thick, short, and translucent ( Fig. 3C ). A pair of extra-rhinophoral appendages present next to the rhinophores, smooth, long, pointed end, curved backward or upward. Gill consists of three, bipinnate or tripinnate branches ( Fig. 3D ). Branchial leaves pale yellow or light brown with white specks. Branchial leave rachis translucent white. Extra-branchial appendages long, smooth, pointed end, and curved toward the metapodium or upward. Oral tentacles smooth; the tip of oral tentacles translucent, thick yellow band present under the tip, Tentacular foot corners smooth, pointed end. Oral tentacle slightly longer than tentacular foot corner. Metapodium long, yellow marking present on metapodium end, the tip of metapodium pointed and translucent white in color.

Remarks. This species is similar to T. euryeia in the brown marking on dorsal surface and the brown patches on the extra-rhinophoral appendages and extra-branchial appendages. However, the brown markings on dorsum of T. toddi are characterized by relatively small in size and sparse distribution, whereas the dorsal brown markings of T. euryeia are relatively large and appear widely on the dorsal surface.

Figures

Fig. 3. Trapania toddi Rudman, 1987. A. Dorsal view, living animal and its egg mass; B. Dorso-lateral view; C. Head; D. Gill and metapodium; A-D. live animal photographs. Scale bars=1 mm.Abbreviations are same to those in the Fig. 1. Photo by Seung-goo Ra.