Table 3 in Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae)
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Table 3. Morphometries of Cyanocharax dicropotamicus, new species. Standard length is expressed in mm; other measurements through head length are percentages of standard length; the last four entries arc percentages of head length. All specimens are from laguna dos Patos drainage. Described ranges include measurements of the holotype MZUSP 82262, male, and following paratypes: MZUSP 18984 (35).
CharacterholotypenlowhighXStandard length (mm)42.53526.342.532.7Snout to anal-fin origin56.03556.062.958.4Snout to dorsal-fin origin54.83552.657.154.9Snout to pelvic-fin origin41.73541.645.644.0Dorsal-fin base length8.7358.711.810.1Anal-fin base length33.43528.834.131.4Caudal peduncle length13.23511.414.112.8Caudal peduncle depth11.3339.111.310.1Depth at dorsal-fin origin30.83526.633.129.5Dorsal-fin height24.23321.625.823.6Pelvic-fin length males15.81314.216.515.4Pelvic-fin length females-2212.015.213.9Pectoral-fin length21.23520.323.821.9Bony head length22.63522.124.823.5Snout length22.93319.523.521.8Upper jaw length36.53433.341.937.6Horizontal eye diameter42.73437.846.842.4Least interorbital width34.43531.837.334.4
表3 新种双凹尖脂鲤(Cyanocharax dicropotamicus)的形态测量参数。标准长度单位为毫米(mm);其余测量值均以标准长度的百分比表示;最后四项测量值以头长的百分比计。所有标本均采自拉古纳多斯帕图斯(Laguna dos Patos)水系。本次描述的数值范围涵盖正模标本MZUSP 82262(雄性)以及下述副模标本:MZUSP 18984(共35尾)。
各测量参数详情如下:
1. 标准长度(mm):正模值42.5,样本量35,最小值26.3,最大值42.5,平均值32.7
2. 吻端至臀鳍起点:正模值56.0,样本量35,最小值56.0,最大值62.9,平均值58.4
3. 吻端至背鳍起点:正模值54.8,样本量35,最小值52.6,最大值57.1,平均值54.9
4. 吻端至腹鳍起点:正模值41.7,样本量35,最小值41.6,最大值45.6,平均值44.0
5. 背鳍基长:正模值8.7,样本量35,最小值8.7,最大值11.8,平均值10.1
6. 臀鳍基长:正模值33.4,样本量35,最小值28.8,最大值34.1,平均值31.4
7. 尾柄长:正模值13.2,样本量35,最小值11.4,最大值14.1,平均值12.8
8. 尾柄高:正模值11.3,样本量33,最小值9.1,最大值11.3,平均值10.1
9. 背鳍起点处体高:正模值30.8,样本量35,最小值26.6,最大值33.1,平均值29.5
10. 背鳍高:正模值24.2,样本量33,最小值21.6,最大值25.8,平均值23.6
11. 雄性腹鳍长:正模值15.8,样本量13,最小值14.2,最大值16.5,平均值15.4
12. 雌性腹鳍长:无正模对应值,样本量22,最小值12.0,最大值15.2,平均值13.9
13. 胸鳍长:正模值21.2,样本量35,最小值20.3,最大值23.8,平均值21.9
14. 骨化头长:正模值22.6,样本量35,最小值22.1,最大值24.8,平均值23.5
15. 吻长:正模值22.9,样本量33,最小值19.5,最大值23.5,平均值21.8
16. 上颌长:正模值36.5,样本量34,最小值33.3,最大值41.9,平均值37.6
17. 眼水平直径:正模值42.7,样本量34,最小值37.8,最大值46.8,平均值42.4
18. 最小眶间距:正模值34.4,样本量35,最小值31.8,最大值37.3,平均值34.4
创建时间:
2025-04-05



