Veruluxini new name Fraser, 2014

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 : 187

Tribe Veruluxini new name Fraser & Mabuchi

Type genus Verulux Fraser 1972

Diagnosis. Members of the Apogoninae : dorsal fin VI–I,9; anal fin II,9; head and body with weakly ctenoid or cycloid scales; pored lateral-line scales 24; preopercle ridge smooth, edges smooth; one supraneural; supramaxilla absent; basisphenoid present; uroneurals absent; two epurals; fused hypurals 1+2+3+4, fused to terminal centrum; no autogenous haemal spines; one supernumerary dorsal spine; bioluminescent organ under cleithrum; caudal fin forked.

Other characteristics. first segmented fin-ray in second dorsal-fin branched, first anal fin-ray branched and segmented; 9+8 segmented principal caudal rays, 15 branched, upper and lower unbranched; developed gill rakers 12–15; unbranched procurrent rays, longest segmented; pectoral fin-rays 14–16; 10+14 vertebrae; 8 ribs; 5–6 epipleurals; teeth in one row on premaxilla, dentary, vomer, palatine, all villiform, or absent on palatine; six infraorbitals, bony shelf absent on third infraorbital; stomach and intestine black with silvery peritoneum; low crest on PU2.

Distribution. The single described species is known from East Africa, Red Sea, islands in the Indian Ocean, throughout the West Pacific to Japan, onto the Pacific Plate to Marshall Islands, Vanuatu, New Caledonia and Australia.

Remarks. This tribe contains only one species, Verulux cypselurus , corresponding to the clade V in the molecular trees ( Figs. 2–6 , Table 4 ). Representatives of Verulux (two individuals from Ryukyu Islands and Seychelles) were monophyletic separated by a moderate genetic distance, which may indicate presence of cryptic species. This lineage was recovered far from Rhabdamia (tribe Rhabdamiini ), although their monophyly (genus Rhabdamia sensu Fraser 1972 ) was not rejected by AU test (H05 in Table 6 ). The single described species has a bioluminescent organ under cleithrum unlike Rhabdamia .

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.