Table 1. Morphometric data for holotype and 58 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Table 1. Morphometric data for holotype and 58 paratypes of Hemigrammus tocantinsi from upper rio Tocantins basin. SD = standard deviation; m = male (n = 25, including holotype); f = female (n = 34). HolotypeParatypesMeanSDStandard length (mm)28.223.9-36.826.9-Percents of standard lengthBody depth32.529.7-36.632.91.4Head length25.323.0-27.626.00.8Head depth27.225.6-32.327.51.0Predorsal length52.951.3-55.753.90.9Prepelvic length47.746.5-51.848.81.1Pelvic fin to anal distance (m)16.414.5-17.616.10.7Pelvic fin to anal distance (f)-15.7-20.218.11.0Caudal peduncle depth13.912.2-15.313.80.7Dorsal-fin base length13.511.3-14.913.00.8Anal-fin base length (m)26.723.4-28.826.51.1Anal-fin base length (f)-20.1-27.523.31.8Pectoral-fin length (m)22.222.2-25.523.70.8Pectoral-fin length (f)-19.0-23.921.81.1Pelvic-fin length (m)16.916.5-18.417.40.5Pelvic-fin length (f)-13.4-17.414.81.2Dorsal-fin length (m)26.926.1-31.028.21.2Dorsal-fin length (f)-23.2-29.226.11.5Anal-fin length17.114.6-21.817.51.5Caudal peduncle length17.015.5-19.017.40.8Dorsal fin to adipose fin distance36.233.3-37.535.20.9Eye to dorsal-fin origin39.737.9-42.140.10.9Dorsal origin to caudal origin51.649.0-55.051.51.2Percents of head lengthInterorbital width31.029.4-35.132.11.2Snout length22.920.4-25.922.81.0Orbital diameter40.738.6-46.242.81.7Upper jaw length43.336.8-43.540.91.5表1. 采自托坎廷斯河上游流域的托坎廷斯半线脂鲤（Hemigrammus tocantinsi）正模标本及58份副模标本的形态测量数据。SD为标准差（standard deviation）；m代表雄性（样本量n=25，包含正模标本）；f代表雌性（样本量n=34）。 | 测量指标 | 正模标本 | 副模标本范围 | 均值 | 标准差 | | --- | --- | --- | --- | --- | | 标准体长（mm） | 28.2 | 23.9-36.8 | 26.9 | - | | 占标准体长百分比 | | | | | | 体高 | 32.5 | 29.7-36.6 | 32.9 | 1.4 | | 头长 | 25.3 | 23.0-27.6 | 26.0 | 0.8 | | 头高 | 27.2 | 25.6-32.3 | 27.5 | 1.0 | | 背前距 | 52.9 | 51.3-55.7 | 53.9 | 0.9 | | 腹前距 | 47.7 | 46.5-51.8 | 48.8 | 1.1 | | 腹鳍至臀鳍间距（雄性） | 16.4 | 14.5-17.6 | 16.1 | 0.7 | | 腹鳍至臀鳍间距（雌性） | - | 15.7-20.2 | 18.1 | 1.0 | | 尾柄高 | 13.9 | 12.2-15.3 | 13.8 | 0.7 | | 背鳍基长 | 13.5 | 11.3-14.9 | 13.0 | 0.8 | | 臀鳍基长（雄性） | 26.7 | 23.4-28.8 | 26.5 | 1.1 | | 臀鳍基长（雌性） | - | 20.1-27.5 | 23.3 | 1.8 | | 胸鳍长（雄性） | 22.2 | 22.2-25.5 | 23.7 | 0.8 | | 胸鳍长（雌性） | - | 19.0-23.9 | 21.8 | 1.1 | | 腹鳍长（雄性） | 16.9 | 16.5-18.4 | 17.4 | 0.5 | | 腹鳍长（雌性） | - | 13.4-17.4 | 14.8 | 1.2 | | 背鳍长（雄性） | 26.9 | 26.1-31.0 | 28.2 | 1.2 | | 背鳍长（雌性） | - | 23.2-29.2 | 26.1 | 1.5 | | 臀鳍长 | 17.1 | 14.6-21.8 | 17.5 | 1.5 | | 尾柄长 | 17.0 | 15.5-19.0 | 17.4 | 0.8 | | 背鳍至脂鳍间距 | 36.2 | 33.3-37.5 | 35.2 | 0.9 | | 眼至背鳍起点距 | 39.7 | 37.9-42.1 | 40.1 | 0.9 | | 背鳍起点至尾鳍起点距 | 51.6 | 49.0-55.0 | 51.5 | 1.2 | | 占头长百分比 | | | | | | 眼间距 | 31.0 | 29.4-35.1 | 32.1 | 1.2 | | 吻长 | 22.9 | 20.4-25.9 | 22.8 | 1.0 | | 眼径 | 40.7 | 38.6-46.2 | 42.8 | 1.7 | | 上颌长 | 43.3 | 36.8-43.5 | 40.9 | 1.5 |