Emmelichthys papillatus, Girard & Santos & Bemis, 2024
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publication ID |
https://dx.doi.org/10.3897/zookeys.1196.111161 |
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publication LSID |
lsid:zoobank.org:pub:E264F69C-8FAD-4860-9AE7-7F6E43608BB6 |
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persistent identifier |
https://treatment.plazi.org/id/804D459E-72C9-458A-A347-6CD8D88B2E30 |
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taxon LSID |
lsid:zoobank.org:act:804D459E-72C9-458A-A347-6CD8D88B2E30 |
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treatment provided by |
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scientific name |
Emmelichthys papillatus |
| status |
sp. nov. |
Emmelichthys papillatus sp. nov.
Etymology.
Named for the diagnostic fleshy cleithral papillae.
English name.
Papillated redbait.
Tagalog name.
Rebentador pula.
Types.
Holotype. PNM 15806 (ex. KAUM-I. 91845); 154 mm TL; 130 mm SL; purchased 12 September 2016 from Oton Fish Market; likely captured off Iloilo, Panay Island, Philippines, 11°N, 123°E (Fig. 1 View Figure 1 , Tables 1 View Table 1 - 4 View Table 4 ). Collected by Y. Fukui and M. Matsunuma ( Motomura et al. [2017: 128] identified as E. struhsakeri ). Paratypes. USNM 424606; 138 mm TL; 122 mm SL; purchased 1 June 2013 from Pasil Market, Cebu Island, Philippines, 10°17'30.1"N, 123°53'31.2"E (Fig. 2 View Figure 2 , Tables 1 View Table 1 - 4 View Table 4 ). Collected by J. T. Williams, K. E. Carpenter, A. Lizano, and A. Macaspac. KAUM-I. 193858 (ex. USNM 424607); 132 mm TL; 119 mm SL; same collection information as USNM 424606.
Diagnosis.
Emmelichthys papillatus is distinguished from congeners in the Pacific Ocean by the presence of two fleshy papillae on the cleithrum (absent in E. elongatus , E. karnellai , E. struhsakeri ; see Fig. 3 View Figure 3 ) and fewer number of gill rakers (30-33 vs. 34+ in other species). It can be further differentiated from E. cyanescens and E. nitidus , which have bony cleithral papillae, by fewer pectoral-fin rays (18-19 vs. 22 in E. cyanescens , 20-23 in E. nitidus ) and fewer lateral-line scales (69-74 vs. 100-105 in E. cyanescens , 87-93 in E. nitidus ). It can also be differentiated from Erythrocles schlegelii , which also has fleshy cleithral papillae, by II isolated dorsal-fin spines between the spinous and soft dorsal fin.
Description
(See Tables 3 View Table 3 , 4 View Table 4 for counts and measurements). Dorsal fin with anterior VIII spines connected by membrane; penultimate II spines not connected to adjacent spines via membrane but with short membrane behind each spine; membrane of last dorsal-fin spine connected to first soft dorsal-fin ray. Upper 2 pectoral-fin rays unbranched. Body and head, except for a narrow median region dorsal to upper lip, covered with ctenoid scales; 5-7 scales from middle of spinous dorsal fin to lateral line; 7-8 scales from dorsal-fin origin and 14-16 from anal-fin origin to lateral line; 26-28 circumpeduncular scales. Soft dorsal and anal fins with scaly sheath at base, broadening near last few rays; no scales on dorsal or anal fins beyond basal sheath; pectoral fins scaled proximally; caudal fin with small scales on basal fleshy region and proximally on rays. Nostrils small, subequal, close-set. Maxilla reaching vertical at front edge of pupil. Opercle with 2-3 flat spines. No teeth on vomer, palatines, or jaws. Shallow groove on rear margin of gill cavity at upper end of cleithrum; cleithrum with two pronounced fleshy papillae that lack underlying osteological support (Fig. 3A-B View Figure 3 ; compare with E. struhsakeri [Fig. 3C-D View Figure 3 ] and E. nitidus [Fig. 3E-F View Figure 3 ]). Pectoral fins reaching slightly posterior to vertical at tips of pelvic fins. Anal fin origin slightly posterior to vertical at first soft dorsal-fin ray. Anus well in advance of anal fin origin.
Color of market specimens dusky rose dorsally, becoming silver-pink ventrally (Figs 1 View Figure 1 - 2 View Figure 2 ). Indistinct wide lateral bar of yellowish pink below lateral-line canal. Indistinct dark mottling above the lateral-line canal. Centers of flank scales darker pink. Dorsal fin pinkish white; pelvic, anal, and caudal fins whitish, with rays pinker than membrane; pectoral fins pink, grading to white distally; lips red. In alcohol, uniformly tan, no distinct coloration remains (Fig. 1 View Figure 1 ).
Distribution.
All three specimens of Emmelichthys papillatus were collected from markets of the Visayas region of the Philippines (Fig. 2C View Figure 2 ). It is unknown if this species occurs beyond Philippine waters.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.