Editorial Type:
Article Category: Research Article
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Online Publication Date: 01 Dec 2005

Redescription of Hapalogenys nigripinnis (Schlegel in Temminck and Schlegel, 1843), a Senior Synonym of H. Nitens Richardson, 1844, and a New Species from Japan

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Page Range: 854 – 867
DOI: 10.1643/0045-8511(2005)005[0854:ROHNSI]2.0.CO;2
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Abstract

Hapalogenys nigripinnis (Schlegel in Temminck and Schlegel, 1843) is redescribed on the basis of a lectotype, five paralectotypes, and non-type specimens. Hapalogenys sennin, new species, is described from type and non-type specimens and is currently known only from parts of southern Japan (except the Ryukyu and Ogasawara Islands). It has long been identified as H. nigripinnis, although lacking a scaled maxilla. The type specimens of H. nigripinnis are all conspecific with the holotype of H. nitensRichardson, 1844, which is regarded as a valid species from the East Asian Shelf and also characterized by a scaled maxilla. Accordingly, H. nigripinnis has priority over H. nitens, including junior synonyms of H. aculeatusNystöm, 1887 and H. guentheriMatsubara, 1933 by having the same characters of H. nigripinnis on the basis of their type specimens.

Copyright: The American Society of Ichthyologists and Herpetologists
Figure 1. 
Figure 1. 

(A) Hapalogenys nigripinnis, FAKU 65887, 258 mm SL, Iburi, Kochi, Shikoku, Japan; (B) Hapalogenys sennin, new species, MUFS 11649, holotype, 232 mm SL, collected by Meitsu, Miyazaki, Kyushu, Japan

Figure 2. 
Figure 2. 

Types of Hapalogenys species.(A) lectotype of H. nigripinnis, RMNH D282, 292 mm SL; (B) holotype of H. nitens, BMNH 1968.3.11.1, 107 mm SL; (C) holotype of H. aculeatus, 320 mm SL; (D) holotype of H. guentheri, FAKU 51028, 205 mm SL

Figure 3. 
Figure 3. 

Head (A and C) and lower jaw from abdominal view (B and D).(A–B) Hapalogenys nigripinnis, ZMUU 275 (holotype of H. aculeatus), 320 mm SL; (C–D) H. sennin, MUFS 21573 (paratype of H. sennin), 296 mm SL. Arrows indicate squamation condition on maxilla and part of ventral lower jaw (A–B, present; C–D, absent)

Figure 4. 
Figure 4. 

Stages of Hapalogenys nigripinnis (A–D) and H. sennin (E–H).(A) BSKU 63894, 67 mm SL; (B) MUFS 20607, 185 mm SL; (C) MUFS 15363, 242 mm SL; (D) ZMUU 275 (holotype of H. aculeatus), 320 mm SL; (E) MUFS 14627 (paratype of H. sennin), 79 mm SL; (F) MUFS 20810 (paratype of H. sennin), 194 mm SL; (G) MUFS 16060 (paratype of H. sennin), 248 mm SL; (H) MUFS 21573 (paratype of H. sennin), 296 mm SL

Contributor Notes

(YI) Laboratory of Marine Production, Department of Animal Science, Faculty of Agriculture, Miyazaki University, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, Miyazaki 889-2192, Japan; and (TN) Tetsuji Nakabo, The Kyoto University Museum, Yoshida, Sakyo, Kyoto 606-8501, Japan. (YI) yuk@cc.miyazaki-u.ac.jp. Send reprint requests to YI.

Accepted: 11 May 2005
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