A new generic name for the “Lepadichthys” lineatus complex with a rediagnosis of Discotrema, a senior synonym of Unguitrema, and comments on their phylogenetic relationships (Gobiesocidae: Diademichthyinae)

CT scanned anterior skeleton, including cranium, paired-fin girdles, and abdominal region of vertebral column, of Discotrema monogrammum (BPBM 40504, 16.4 mm SL). A dorsal view; B lateral view; C ventral view. Abbreviations: ACh, anterior ceratohyal; Ana, angulo-articular; Apa, autopalatine; Bh, basihyal; Boc, basioccipital; Bp, basipterygium; BR, branchiostegal rays; Cb, ceratobranchials; Cl, cleithrum; CoPr, coronoid process; Cor, coracoid; DHh, dorsal hypohyal; Dn, dentary; DPcl, dorsal postcleithrum; Ect, ectopterygoid; EpC, epicentral; Epoc, epiotic; Exoc, exoccipital; Fr, frontal; Hy, hyomandibular; I, pelvic-fin spine; Ih, interhyal; Iop, interopercle; La, lachrymal; LE, lateral ethmoid; M, mesethmoid; Mx, maxilla; Na, nasal; NS1, 5, neural spine of vertebral centrum 1, 5; Op, opercle; Pa, parietal; PbTP3, pharyngobranchial 3 toothplate; PCh, posterior ceratohyal; PecFR, pectoral-fin rays; PecR, pectoral radials; PelR, pelvic-fin soft rays; Pmx, premaxilla; Pop, preopercle; Pro, prootic; Psph, parasphenoid; Pt, posttemporal; Pte, pterotic; Q, quadrate; Ra, retroarticular; Ri, ribs; Sc, scapula; Scl, supracleithrum; Soc, supraoccipital; Sop, subopercle; Sph, sphenotic; Sym, symplectic; Ur, urohyal; V1, vertebral centrum 1; Vo, vomer; VPcl(a), ventral postcleithrum (anterior); VPcl(p), ventral postcleithrum (posterior).