A new genus and species of the family Symphysanodontidae, Cymatognathus aureolateralis (Actinopterygii: Perciformes) from Indonesia Author Kimura, Seishi Author Johnson, G. David Author Peristiwady, Teguh Author Matsuura, Keiichi text Zootaxa 2017 4277 1 51 66 journal article 32837 10.11646/zootaxa.4277.1.4 034b7092-7aed-4e50-ace3-1318cb51c6ce 1175-5326 809053 EED364DC-47FB-45A5-B0F5-CD71C41ECE2E Genus Cymatognathus gen. nov. ( Figure 1A ) Type species. Cymatognathus aureolateralis sp. nov. Diagnosis. A symphysanodontid distinguishable from the other genus in the family, Symphysanodon , by the following: posterior tip of coronoid process of dentary abruptly depressed so that teeth on anterior portion appear as an elevated patch, creating a wavy contour on lower jaw ( Figures 2 A, 3A); anterior tip of upper jaw not notched ( Figure 5 A); posterior nostril horizontally slit-like ( Figure 6 A). Description. Characters given in familial and generic diagnoses are not repeated. Body oblong, deep, compressed; mouth large, oblique; posterior tip of upper jaw just reaching to vertical through mid-pupil, its upper and lower corners rounded; upper lip posteriorly covered by maxilla; upper jaw projecting slightly beyond lower jaw; teeth in both jaws forming bands, outer teeth larger than the inner; small but somewhat robust conical teeth on vomer, palatines, endopterygoids and ectopterygoids ( Figures 7 A, 8A); anterior nostril rounded with slightly elevated rim ( Figure 6 A); metapterygoid without posteroventral projection (see “Remarks” below; Figure 8 A); opercle with two flat, pointed spines, the upper broader than the lower; preopercle with almost smooth posterior margin; head and body almost completely covered by ctenoid scales; scales on head progressively smaller anteriorly; lateral line complete, gently curved anteriorly, running almost parallel to dorsal contour of body; dorsal fin with nine spines and ten soft rays, last spine and first soft ray subequal in length; anal fin with three spines and seven soft rays; caudal fin deeply forked with tips of both lobes filamentous; pectoral and pelvic fins long, posterior tips of pectoral and pelvic fins extending beyond level of anal-fin origin; hypurals 1, 2 and 5 autogenous, hypurals 3 and 4 represented by a single plate. Etymology. The name “ Cymatognathus ” is derived from the Greek kymatos (wave) and gnathos (jaw) in reference to the characteristic wavy upper contour of the lower jaw.