Table 1 in Trichomycterus venulosus (Steindachner, 1915), a junior synonym of Eremophilus mutisii Humboldt, 1805 (Siluriformes: Trichomycteridae) and not an extinct species

Abstract

Table 1. Comparative list of osteological and meristic characters for Trichomycterus venulosus (NMW 44476: 1, syntype of Pygidium venulosum), Eremophilus mutisii (MPUJ 1963, 1 CS; MPUJ 1599, 2 RX) and Trichomycterus sp. A (Páramo de Cruz Verde) (MBUCV-CT-1047, 1 CS; MBUCV-CT-1053, 3 CS; MPUJ 2482, 6 RX; MPUJ 2491, 2 RX; MPUJ 4191, 1 RX). CharactersTrichomycterus venulosusEremophilus mutisiiTrichomycterus sp. A (Páramo de Cruz Verde)Premaxilla shapeAnterior margin extending more laterally than posterior margin, forming a conspicuous pointed lateral projection. Lateral margin slightly concaveAnterior margin extending more laterally than posterior marginAnterior margin not extending more laterally than posterior margin. Lateral margin convex. Second and third teeth rows extending slightly more laterally than anterior and posterior rowsPremaxilla relative lengthSimilar to maxillaPremaxilla equal or slightly shorter than maxillaLonger than maxillaAutopalatinePosterolateral process extending posteriorly to anguloarticular articulation with quadratePosterolateral process extending posteriorly to anguloarticular articulation with quadrate. Lateral margin slightly convexPosterolateral process forming a conspicuous angle with the lateral marginBranchiostegal rays87-86-7Pectoral-fin rays888-9Precaudal vertebrae1717-189-13Caudal vertebrae252527-32Ribs1816-1814-18First hemal spineVertebra 19Vertebra 19Vertebrae 16-19Dorsal-fin rays1313-1411-13Dorsal-fin basal radials10108Dorsal-fin insertionVertebrae 21-27Vertebrae 21-27Vertebrae 18-23; 18-24; 19-24Anal-fin rays111111-12Anal-fin basal radials886-7Anal-fin insertionVertebrae 25-31Vertebrae 25-31Vertebrae 22-26; 23-27; 23-28; 24-28Neural spine of compound caudal vertebraComplete, ca. 1/ of adjacent 3 neural spine heightComplete, 1/ -1/ of adjacent 3 2 neural spine heightComplete, with a short rounded tip, and base having conspicuous broad anterior and posterior apophysisDorsal procurrent caudal-fin rays1313-1616-21Dorsal procurrent rays originVertebra 6Vertebrae 6-8Vertebrae 7-10Ventral procurrent caudal-fin rays1212-1514-17Ventral procurrent rays originVertebra 6Vertebrae 6-8Vertebrae 8-10Caudal skeletonPH+1+2, 3, 4+5PH+1+2, 3, 4+5PH+1+2, 3+4+5