TABLE 1 in Description and phylogenetic position of a new species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from the Jamanxim River basin
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TABLE 1 | Morphometric data of Rhyacoglanis beninei. N = 21 specimens, including the holotype. HolotypeRangeMeanSDStandard length (mm)59.122.7–59.136.6–Percent of standard lengthHead length30.727.5–31.930.01.3Pectoral-girdle width34.126.7–34.129.21.7Predorsal length38.435.4–42.339.01.8Dorsal-fin base length17.113.8–18.416.31.2Adipose-fin base length19.915.2–21.218.01.9Prepelvic length53.548.7–56.351.81.6Distance between pelvic and anal fins24.922.0–27.325.61.3Anal-fin base length11.39.1–13.210.81.0Caudal-peduncle length16.211.4–16.213.01.4Body depth19.216.8–25.119.72.1Caudal-peduncle depth10.38.0–11.59.90.9Pectoral-fin spine length15.414.8–20.017.61.4Dorsal-fin spine length14.911.1–20.217.22.5Pelvic-fin length12.311.6–19.714.62.3Postcleithral-process length15.29.8–15.713.61.7Distance between dorsal and pelvic fins24.919.7–26.922.81.8Distance between pelvic fins13.510.4–14.411.62.8Distance between pelvic fin and anus13.911.1–14.612.51.1Distance between the anus and anal fin11.211.1–17.713.91.7Percent of head lengthEye diameter8.86.5–12.69.51.7Interorbital distance34.126.2–44.534.24.1Snout length41.332.6–41.337.12.3Mouth width65.244.8–65.254.86.2Head depth53.230.7–53.239.55.4Maxillary-barbel length90.747.5–94.072.812.2Distance between anterior and posterior nostrils18.811.4–22.516.42.9Distance between the posterior nostril and eye7.33.5–10.16.31.7Distance between posterior nostrils20.218.8–25.121.51.7
表1 | 贝氏急丽鲶（Rhyacoglanis beninei）形态测量数据。样本量N=21，包含正模标本。 | 测量指标 | 正模标本数值 | 范围 | 平均值 | 标准差（SD） | | --- | --- | --- | --- | --- | | 标准体长（mm） | 59.1 | 22.7–59.1 | 36.6 | — | | **占标准体长百分比** | | | | | | 头长 | 30.7 | 27.5–31.9 | 30.0 | 1.3 | | 胸鳍带宽度 | 34.1 | 26.7–34.1 | 29.2 | 1.7 | | 背前距 | 38.4 | 35.4–42.3 | 39.0 | 1.8 | | 背鳍基长 | 17.1 | 13.8–18.4 | 16.3 | 1.2 | | 脂鳍基长 | 19.9 | 15.2–21.2 | 18.0 | 1.9 | | 腹前距 | 53.5 | 48.7–56.3 | 51.8 | 1.6 | | 腹鳍至臀鳍间距 | 24.9 | 22.0–27.3 | 25.6 | 1.3 | | 臀鳍基长 | 11.3 | 9.1–13.2 | 10.8 | 1.0 | | 尾柄长 | 16.2 | 11.4–16.2 | 13.0 | 1.4 | | 体高 | 19.2 | 16.8–25.1 | 19.7 | 2.1 | | 尾柄高 | 10.3 | 8.0–11.5 | 9.9 | 0.9 | | 胸鳍棘长 | 15.4 | 14.8–20.0 | 17.6 | 1.4 | | 背鳍棘长 | 14.9 | 11.1–20.2 | 17.2 | 2.5 | | 腹鳍长 | 12.3 | 11.6–19.7 | 14.6 | 2.3 | | 后匙骨突长 | 15.2 | 9.8–15.7 | 13.6 | 1.7 | | 背鳍至腹鳍间距 | 24.9 | 19.7–26.9 | 22.8 | 1.8 | | 腹鳍间距 | 13.5 | 10.4–14.4 | 11.6 | 2.8 | | 腹鳍至肛门间距 | 13.9 | 11.1–14.6 | 12.5 | 1.1 | | 肛门至臀鳍间距 | 11.2 | 11.1–17.7 | 13.9 | 1.7 | | **占头长百分比** | | | | | | 眼径 | 8.8 | 6.5–12.6 | 9.5 | 1.7 | | 眼间距 | 34.1 | 26.2–44.5 | 34.2 | 4.1 | | 吻长 | 41.3 | 32.6–41.3 | 37.1 | 2.3 | | 口宽 | 65.2 | 44.8–65.2 | 54.8 | 6.2 | | 头高 | 53.2 | 30.7–53.2 | 39.5 | 5.4 | | 上颌须长 | 90.7 | 47.5–94.0 | 72.8 | 12.2 | | 前后鼻孔间距 | 18.8 | 11.4–22.5 | 16.4 | 2.9 | | 后鼻孔至眼间距 | 7.3 | 3.5–10.1 | 6.3 | 1.7 | | 后鼻孔间距 | 20.2 | 18.8–25.1 | 21.5 | 1.7 |
