Pempheris ufuagari Koeda, Yoshino & Tachihara, 2013

Koeda, Keita & Bessho-Uehara, Manabu, 2024, A review of the genus Pempheris (Teleostei, Pempheridae) found in Japan and Taiwan, ZooKeys 1220, pp. 123-163 : 123-163

Pempheris ufuagari Koeda, Yoshino & Tachihara, 2013

Figs 14 , 15 , Suppl. material 2 Standard Japanese name: Daito-hatampo

Pempheris ufuagari Koeda et al. 2013 a: 232, fig. 1 a (type locality: Minamidaito-jima Island, Daito Islands, Japan); Koeda and Motomura 2015: 275; Koeda 2017 a: 11, fig. 2 (lower fig.); Koeda and Motomura 2017 a; Koeda 2018 b: 299, unnumbered fig.

Pempheris oualensis (not Cuvier, 1831): Masuda and Kobayashi 1994 (in part); 180, fig. 5; Hatooka 1997 (in part): 380, unnumbered fig. (p. 381, upper left fig.).

Pempheris otaitensis (not Cuvier, 1831): Randall et al. 1997 (in part): 35, pl. 8, fig. F.

Diagnosis.

Counts of holotype and paratypes are given in Table 1 of Koeda et al. (2013 a). Dorsal-fin rays VI, 9; anal-fin rays III, 39–43; pectoral-fin rays 17–18; pored lateral-line scales 62–71; scale rows above lateral line 6 ½ – 7 ½ (usually 7 ½); scale rows below lateral line 15–18; predorsal scales 37–44; circumpeduncular scales 20–22; gill rakers 8–9 + 20–21 = 28–30; head length 26.2–29.9 %; body depth 39.7–44.4 %; eye diameter 37.5–45.8 %; upper jaw length 48.8–53.4 %; maximum 197 mm SL, usually <170 mm SL; scales weakly ctenoid, deciduous, thin, semicircular in shape, far wider than long ( Koeda et al. 2013 a: see fig. 2 a); body silver; distinct blackish blotch on pectoral-fin base; dorsal fin yellow with tip blackish; blackish band on anal-fin outer margin; caudal fin bright yellow with blackish posterior margin; lacking villiform tooth band extending outside lips; abdomen cross-sectional outline V-shaped.

Distribution.

Endemic to the Daito and Ogasawara islands (Fig. 15 ). Specimens collected from the crevasses with strong current in coral reef areas of 0–20 m depth.

Remarks.

Pempheris ufuagari is most similar to P. otaitensis , known only from French Polynesia and Samoa, sharing a distinct black blotch on the pectoral-fin base, yellow dorsal and caudal fins, and a blackish band on the anal-fin outer margin. However, the former can clearly be distinguished from the latter in having 62–71 pored lateral-line scales (vs 69–79 in P. otaitensis ), 6 ½ – 7 ½ scale rows above lateral line (vs 8 ½), 37–43 predorsal scales (vs 44–48), and the tip of the dorsal fin blackish (vs anterior margin to tip blackish).

Figures

Figure 14. Pempheris ufuagari A fresh specimen (KAUM – I. 74550, Chichi-jima Island, Ogasawara Islands, 170.3 mm SL, photo taken by K. Kuriiwa) and B underwater photograph (Dobuiso, Ogasawara Islands, Japan).

Figure 15. Distribution of Pempheris ufuagari (triangles) and P. vanicolensis (diamonds) based on the collection localities of the specimens.