Doto japonica Odhner, 1936

Lee, Yucheol, Nam, Eunjung & Park, Hyun-Jong Kil and Joong-Ki, 2022, Morphological description and DNA barcode information of seven newly reported nudibranch species from Korea, Journal of Species Research 11 (2), pp. 102-107 : 103

2. Doto japonica Odhner, 1936 ( Fig. 1B )

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Doto japonica Odhner, 1936: 1121 , 1122, pl. 1, figs. 11- 16, text-fig. 47; Kil et al., 2020: 102, 103.

Doto (Doto) japonica : Baba, 1949: 94, 171, pl. 39, fig. 137, text-fig. 117; Baba, 1971: 75; Okutani, 2000: 799, pl. 398, fig. 1.

Material examined. 2 individuals (MO00178867, MMR BK7448): Munamjin-ri , Jugwang-myeon , Goseong-gun, Gangwon-do, Korea, 38°18′04.04″N, 128°34′10.08″E, 27 April 2021 ; 2 individuals ( NIBRIV0000882622 , NIBRIV 0000882626 ): Munamjin-ri , Jugwang-myeon , Goseong-gun, Gangwon-do, Korea, 38°18′04.04″N, 128°34′10.08″ E, 16 July 2020 .

Diagnosis. Body slender, elongated (length 5 mm, width 1 mm), ground color opaque white to brown or black. Rhinophores slender, smooth with blunted, white-colored terminal ends and extruded from slightly flared sheaths. Six to seven pairs of dorsal cerata decrease gradually in size towards posterior end of body, each covered with rounded tubercles spotted in white at their terminal ends. Digestive gland in cerata pale yellow or yellowish green in color. Foot narrow and extends from under mantle.

GenBank accession number. OK143203.

Distribution. Korea, Japan.

Remarks. This species is similar to D. bella in external morphology, but distinguished by the color pattern of rhinophores and terminal end of ceratal tubercles. D. japonica shows rhinophores and the ceratal tubercles have white-colored terminal spots, while D. bella possesses black-colored rhinophores and dorsal ceratal tubercles that are terminated with a large, rounded, black spot.

Figures

Fig. 1. Images of seven Nudibranchia species in Korea. A, Dendronotus primorjensis Martynov, Sanamyan & Korshunova, 2015; B, Doto japonica Odhner, 1936; C, Trinchesia ornata (Baba, 1937); D, E, Antiopella fusca (O’Donoghue, 1924); F, Cadlina paninae Korshunova, Fletcher, Picton, Lundin, Kashio, N. Sanamyan, K. Sanamyan, Padula, Schrödi & Martynov, 2020; G, Rostanga bifurcata Rudman & Avern, 1989; and H, Goniodoridella savignyi Pruvot-Fol, 1933.