TABLE 2 in Two new species of Hypancistrus (Siluriformes: Loricariidae) from the rio Xingu, Amazon, Brazil
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TABLE 2 | Morphometric and meristic data of Hypancistrus seideli. N = number of specimens; SD = standard deviation. HolotypeNRangeMeanSDStandard length (mm)98.111129.3–116.5––Total length (mm)131.510840.9–150.2––Percentages of standard lengthPredorsal length42.711137.8–48.241.72.1Head length36.911132.1–41.735.91.8Cleithral width32.011129.2–36.031.91.2Thorax length23.911120.3–33.323.81.4Pectoral-spine length31.111127.4–39.133.01.9Abdominal length24.211118.8–28.123.71.4Pelvic-spine length26.211123.2–33.827.52.1Postanal length32.111115.7–38.632.82.7Anal-fin spine length14.211110.8–29.815.52.0Dorsal spine length30.110624.0–36.330.42.5Dorsal-fin base length30.511125.2–33.128.91.4Dorsal-adipose distance16.11118.4–34.014.12.4Caudal penduncle depth11.611110.0–15.611.60.8Adipose-spine length9.01115.7–14.39.11.1Adipose-caudal length6.41112.0–12.66.92.3Body depth at dorsal-fin origin26.41113.6–28.923.43.0Body width at dorsal-fin origin29.411123.0–31.627.71.7Body width at anal-fin origin18.211110.1–29.615.52.1Post dorsal length35.211124.8–39.732.13.1Percentages of head lengthOrbital diameter7.61116.9–10.88.70.9Snout length13.81114.3–15.313.21.1Internares width4.51113.2–5.84.10.4Interorbital width11.51118.8–12.710.50.9Head depth23.411117.3–36.021.82.1Dentary length4.81112.6–7.44.50.9Premaxillary length3.21112.2–5.93.20.5Head width31.011127.0–33.830.81.3Eye-nare length4.11112.3–5.33.40.5Interbranchial distance20.211114.9–24.918.92.1MeristicsHolotypeNRangeModeTeeth on premaxilla101115–1811Teeth on dentary61111–96Lateral plates in middle series2511119–2523Plates between anal and caudal101118–1110Plates between dorsal and adipose41114–54Plates predorsal41113–54Dorsal-fin branched rays71116–77Pectoral-fin branched rays61115–66Ventral-fin branched rays51115–65Anal-fin branched rays41113–54Caudal-fin branched rays1411113–1414
表2 | 赛氏下钩鲶（Hypancistrus seideli）的形态测量与计数数据。N为标本数量；SD为标准差。 ### 绝对长度指标 标准长度（mm）：正模值98.1，标本数11，范围29.3–116.5，无平均值，无标准差 总长度（mm）：正模值131.5，标本数10，范围40.9–150.2，无平均值，无标准差 ### 占标准长度百分比的测量指标 背前长：正模值42.7，标本数11，范围37.8–48.2，平均值41.7，标准差2.1 头长：正模值36.9，标本数11，范围32.1–41.7，平均值35.9，标准差1.8 匙骨宽：正模值32.0，标本数11，范围29.2–36.0，平均值31.9，标准差1.2 胸长：正模值23.9，标本数11，范围20.3–33.3，平均值23.8，标准差1.4 胸棘长：正模值31.1，标本数11，范围27.4–39.1，平均值33.0，标准差1.9 腹部长：正模值24.2，标本数11，范围18.8–28.1，平均值23.7，标准差1.4 腹棘长：正模值26.2，标本数11，范围23.2–33.8，平均值27.5，标准差2.1 肛后长：正模值32.1，标本数11，范围15.7–38.6，平均值32.8，标准差2.7 臀鳍棘长：正模值14.2，标本数11，范围10.8–29.8，平均值15.5，标准差2.0 背鳍棘长：正模值30.1，标本数10，范围24.0–36.3，平均值30.4，标准差2.5 背鳍基底长：正模值30.5，标本数11，范围25.2–33.1，平均值28.9，标准差1.4 背脂间距：正模值16.1，标本数11，范围8.4–34.0，平均值14.1，标准差2.4 尾柄高：正模值11.6，标本数11，范围10.0–15.6，平均值11.6，标准差0.8 脂鳍棘长：正模值9.0，标本数11，范围5.7–14.3，平均值9.1，标准差1.1 脂尾间距：正模值6.4，标本数11，范围2.0–12.6，平均值6.9，标准差2.3 背鳍起点处体高：正模值26.4，标本数11，范围13.6–28.9，平均值23.4，标准差3.0 背鳍起点处体宽：正模值29.4，标本数11，范围23.0–31.6，平均值27.7，标准差1.7 臀鳍起点处体宽：正模值18.2，标本数11，范围10.1–29.6，平均值15.5，标准差2.1 背鳍后长：正模值35.2，标本数11，范围24.8–39.7，平均值32.1，标准差3.1 ### 占头长百分比的测量指标 眶径：正模值7.6，标本数11，范围6.9–10.8，平均值8.7，标准差0.9 吻长：正模值13.8，标本数11，范围4.3–15.3，平均值13.2，标准差1.1 鼻间距：正模值4.5，标本数11，范围3.2–5.8，平均值4.1，标准差0.4 眶间距：正模值11.5，标本数11，范围8.8–12.7，平均值10.5，标准差0.9 头高：正模值23.4，标本数11，范围17.3–36.0，平均值21.8，标准差2.1 齿骨长：正模值4.8，标本数11，范围2.6–7.4，平均值4.5，标准差0.9 前上颌骨长：正模值3.2，标本数11，范围2.2–5.9，平均值3.2，标准差0.5 头宽：正模值31.0，标本数11，范围27.0–33.8，平均值30.8，标准差1.3 眼鼻间距：正模值4.1，标本数11，范围2.3–5.3，平均值3.4，标准差0.5 鳃间距：正模值20.2，标本数11，范围14.9–24.9，平均值18.9，标准差2.1 ### 计数性状 前上颌齿齿数：正模齿数10，标本数11，范围15–18，众数11 齿骨齿齿数：正模齿数6，标本数11，范围11–9，众数6 中部系列侧线鳞板数：正模鳞板数25，标本数11，范围19–25，众数23 臀鳍与尾鳍间鳞板数：正模鳞板数10，标本数11，范围18–11，众数10 背鳍与脂鳍间鳞板数：正模鳞板数4，标本数11，范围14–54，众数4 背前鳞板数：正模鳞板数4，标本数11，范围3–54，众数4 背鳍分枝鳍条数：正模鳍条7，标本数11，范围6–7，众数7 胸鳍分枝鳍条数：正模鳍条6，标本数11，范围5–6，众数6 腹鳍分枝鳍条数：正模鳍条5，标本数11，范围5–6，众数5 臀鳍分枝鳍条数：正模鳍条4，标本数11，范围3–54，众数4 尾鳍分枝鳍条数：正模鳍条14，标本数11，范围13–14，众数14
