Cheilodipterini Bleeker 1856b

Mabuchi, Kohji, Fraser, Thomas H., Song, Hayeun, Azuma, Yoichiro & Nishida, Mutsumi, 2014, Revision of the systematics of the cardinalfishes (Percomorpha: Apogonidae) based on molecular analyses and comparative reevaluation of morphological characters, Zootaxa 3846 (2), pp. 151-203 : 180

Tribe Cheilodipterini Bleeker 1856b

Type genus Cheilodipterus Lacepède 1801

Diagnosis. Members of the Apogoninae : VI+I,9; anal fin II,8; head and body with ctenoid scales; pored lateral-line scales 24–26; canine teeth on premaxilla and dentary; preopercle ridge smooth, edges serrate; three supraneurals; reduced supramaxilla; one pair of uroneurals; three epurals; five free hypurals; free parhypural; caudal fin forked or emarginate; dark stripes on head and body, no stripes in second dorsal or anal fin, basicaudal dark spot, band or no spot.

Other characteristics. one supernumerary dorsal spine; branched first segmented dorsal and anal ray; ctenoid scales on predorsal, cheek, breast, two pelvic scales, and body; ctenoid scale on opercle and onto base of caudal fin; pored lateral-line scales with multiple pores; pectoral fin-rays 11–14; three supraneurals; 9+8 segmented principal caudal rays, 15 branched, upper and lower unbranched; unbranched procurrent rays, longest segmented; villiform teeth on vomer and palatine; six infraorbitals, bony shelf on third infraorbital; basisphenoid present; anterior ceratohyal smooth or notched; 10+14 vertebrae; 8 ribs; 7–8 epineurals; stomach and intestine pale with pale peritoneum; low crest on PU2.

Distribution. Cheilodipterus is widespread throughout the Indo-Pacific from the Red Sea, East Africa to Japan and French Polynesia following Gon (1993). There have been several short-lived efforts to subdivide this genus with several names proposed ( Cheilodipterops Schultz 1940 ; Desmoamia Fowler & Bean 1930 ; Paramia Bleeker 1863 ). More molecular analysis among the 17 species should provide insight to relationships not apparent in the five species we sampled.

Remarks. This tribe contains one genus, Cheilodipterus , corresponding to the clade X in the molecular trees ( Figs. 2–6 , Table 4 ). Canine or caninoid teeth on the premaxilla and dentary, a reduced supramaxilla, a single supernumerary dorsal spine, stripes on body and a diffuse or solid basicaudal spot in most species often with some surrounding yellow are characteristics of this tribe. Cheilodipteroidei, as a family, was recognized by Bleeker (1856b). Schultz (1940) recognized the Cheilodipteridae , but as a broad grouping of a number of families. Smith (1961) and Norman (1966) recognized this group as a subfamily Cheilodipterinae including Coranthus Smith 1961 (now Amioides ) and Paramia Bleeker 1863 (now Cheilodipterus ). Monophyly of Amioides and Cheilodipterus was significantly rejected by AU test (H13; Table 6 ). The shape and position of the reduced supramaxilla (see Fraser 1972 ) and canine or caninoid teeth are synapomorphies.

Figures

FIGURE 2. Phylogenetic tree from the partitioned maximum-likelihood (ML) analysis. Numbers besides internal branches indicate bootstrap probabilities (BPs) from 1000 replicates (only those of> 50% shown). Species names of recent Ostorhinchus [we included here Apogonichthyoides melas as a possible Ostorhinchus, following Mabuchi et al. (2006)] were blue, those of Apogon sensu lato [genus Apogon in Fraser (1972)] excepting the Ostorhinchus red, and those of genus Rhabdamia in Fraser (1972) green. The names of the twelve major clades (clades I to XII) within the Apogoninae were indicated on the left of the corresponding clades. Four species, which phylogenetic positions were largely different among the ML, Bayesian (BA: Fig. 3), and most parsimonious (MP: Figs. 4 and 5) tress, were indicated by arrows with asterisks.

FIGURE 3. Phylogenetic tree (50% majority-rule consensus tree) from the partitioned Bayesian (BA) analysis. Numbers besides internal branches indicate Bayesian posterior probabilities (PPs: shown as percentages, only those of> 50% shown). Species names were colored as in Figure 2. The names of the twelve major clades were indicated as in Figure 2. Four species, which phylogenetic positions were largely different among the ML (Fig. 2), BA (Fig. 3), and most parsimonious (MP: Figs. 4 and 5) tress, were indicated by arrows with asterisks.

FIGURE 4. Strict consensus tree of two of the five most parsimonious (MP) trees (MP tree-A). Numbers besides internal branches indicate bootstrap probabilities (BPs) from 1000 replicates (only those of> 50% shown). Topological incongruity between the two MP trees denoted by an arrowhead. Four species, which phylogenetic positions were largely different among the ML (Fig. 2), BA (Fig. 3), and MP (Figs. 4 and 5) tress, were indicated by arrows with asterisks. Species names were colored as in Figure 2. The names of the twelve clades were indicated as in Figure 2.

FIGURE 5. Strict consensus tree of the remaining three of the five most parsimonious (MP) trees (MP tree-B). Topological incongruities between the three MP trees denoted by arrowheads. Four species, which phylogenetic positions were largely different among the ML (Fig. 2), BA (Fig. 3), and MP (Figs. 4 and 5) tress, were indicated by arrows with asterisks. This tree was largely different from the MP tree-A (Fig. 4) in the positions of Pterapogon kauderni and Vincentia novaehollandiae.

FIGURE 6. Strict consensus tree of the ML, BA and MP trees shown in Figures 2-5. Species names were colored as in Figures 2–5. The names of the twelve major clades (clades I to XII) within the Apogoninae were indicated besides the corresponding clades, while the names of the thirteen tribes (defined based on morphological characters) on the right of corresponding major and minor clades. The tribe Lepidamiini is not in the tree. Tribes with solid bars include species of Apogon sensu lato, and those with open bars do not include it. Geographic ranges were indicated on the right of the clades only for the species of clade II (Apogonini), all the other apogonids occurring on Indo-Pacific Basin. For the revised genus names of some species, see Appendix A.