
Table 1. Morphometric and meristic data of the holotype and 29 paratypes of Hypostomus yaku. Means are presented for measurements, and modes for counts. The range includes the holotype. SD = Standard deviation. Hypostomus yakuHolotypeLowHighMeanSDStandard length70.841.370.851.47.2Percentages of standard lengthPredorsal length41.541.345.843.31.0Head length33.033.037.335.41.2Interdorsal distance17.515.820.217.71.1Thoracic width21.619.124.021.11.0Abdominal width20.718.421.920.40.9Caudal peduncle length31.229.433.130.91.0Caudal peduncle depth9.48.79.99.40.3First dorsal-fin ray length23.121.226.724.21.1Dorsal-fin base length24.121.825.223.50.8First pectoral-fin ray length24.623.627.826.01.0First pelvic-fin ray length24.022.126.324.51.3Upper caudal-fin ray length26.225.932.328.71.9Lower caudal-fin ray length29.129.836.933.21.9Adipose-fin spine length7.47.19.08.00.6Cleithral width31.130.133.831.50.9Percentages of head lengthHead depth47.446.152.649.41.8Snout length62.458.266.163.61.6Interorbital width33.831.636.134.11.2Orbital diameter14.413.916.915.50.9Lower lip width61.349.561.756.74.1Lower lip length19.213.719.616.71.6Mandibular ramus length18.110.218.914.32.3Maxillary barbel length9.06.112.89.51.7Other proportionsOrbital diameter in snout length23.022.026.924.31.5Orbital diameter in interorbital width42.540.051.145.33.0Mandibulary width in interorbital width53.629.356.842.17.4First dorsal fin ray length in predorsal length55.749.860.655.82.6First pectoral ray length in predorsal length59.255.464.059.92.4Lower caudal ray length in predorsal length70.169.984.976.53.9Adipose ray length in caudal peduncle depth78.772.897.385.06.5Caudal peduncle depth in Caudal peduncle length30.327.533.230.51.5Mandibulary width in cleithral width19.211.522.116.12.6Interdorsal length in dorsal base length72.466.285.475.35.1Lower lip length in lower lip width31.324.033.029.42.3CountsHolotypeLowHighModeLateral series plates24232524Predorsal plates3333Plates between dorsal and adipose fins5576Plates between adipose and caudal fins3243Plates below anal-fin base2232Dorsal procurrent rays5455Ventral procurrent rays4244Premaxillary teeth62276943Dentary teeth53317249
Published as part of Martins, Fernanda O., Langeani, Francisco & Zawadzki, Cláudio H., 2014, A new spiny species of Hypostomus Lacépède (Loricariidae: Hypostominae) from thermal waters, upper rio Paraná basin, central Brazil, pp. 733 in Neotropical Ichthyology 12 (4) on page 733, DOI: 10.1590/1982-0224-20140035, http://zenodo.org/record/12718686
Biodiversity, Taxonomy
Biodiversity, Taxonomy
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