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Table 3 Measurements [in μm] and pt values of selected morphological structures of animals of Richtersius coronifer s.s. (Richters, 1903) from the Billefjorden population. (Specimens mounted in Hoyer’s medium; N – number of specimens/structures measured, RANGE refers to the smallest and the largest structure among all measured specimens; SD – standard deviation; * – proposed new neotype)

From: A new redescription of Richtersius coronifer, supported by transcriptome, provides resources for describing concealed species diversity within the monotypic genus Richtersius (Eutardigrada)

CharacterNRangeMeanSDNeotype*
μmptμmptμmptμmpt
Body length30499102770111257718981641179841057
Buccopharyngeal tube
 Buccal tube length3068.5100.5  85.210.093.1
 Stylet support insertion point3051.274.472.175.663.074.07.21.168.873.9
 Buccal tube external width305.610.57.611.08.09.41.31.09.510.2
 Buccal tube internal width301.23.51.73.81.92.30.40.51.92.0
 Ventral lamina length3032.047.640.151.339.346.24.83.043.346.5
Placoid lengths
 Macroplacoid 1307.515.510.215.911.913.92.51.811.412.2
 Macroplacoid 2306.211.58.712.68.910.41.51.110.110.8
 Macroplacoid row3014.828.520.831.322.225.93.72.522.924.6
Claw 1 heights
 External base259.217.613.020.614.016.52.51.816.818.0
 External primary branch2520.931.427.436.726.331.23.02.428.730.9
 External secondary branch2412.125.416.930.917.720.83.63.022.123.7
 External base/primary branch (cct)2542.059.2  53.05.158.5
 Internal base258.616.612.219.313.416.02.31.712.813.7
 Internal primary branch2620.830.825.236.526.631.52.52.626.128.0
 Internal secondary branch2510.721.514.725.916.019.03.22.7??
 Internal base/primary branch (cct)2440.257.8  50.64.349.0
Claw 2 heights
 External base259.619.013.620.914.516.92.71.815.416.5
 External primary branch2923.233.727.938.728.533.43.02.330.532.8
 External secondary branch2711.322.915.525.018.221.03.12.222.924.6
 External base/primary branch (cct)2540.758.2  51.05.550.5
 Internal base269.018.212.721.314.616.92.51.715.616.8
 Internal primary branch2823.735.227.637.228.933.93.12.430.132.3
 Internal secondary branch2812.821.816.525.517.220.02.71.819.721.2
 Internal base/primary branch (cct)2638.057.6  49.95.451.8
Claw 3 heights
 External base229.718.413.920.614.717.22.71.617.518.8
 External primary branch2524.040.730.341.229.134.54.42.831.433.7
 External secondary branch2312.023.117.525.318.421.63.62.422.123.7
 External base/primary branch (cct)2239.357.6  50.55.255.7
 Internal base229.820.614.121.314.116.72.81.915.817.0
 Internal primary branch2222.642.430.642.928.834.44.42.931.233.5
 Internal secondary branch2211.529.215.731.716.920.04.13.319.621.1
 Internal base/primary branch (cct)2240.257.3  48.74.550.6
Claw 4 heights
 Anterior base2512.622.015.125.717.320.52.62.418.920.3
 Anterior primary branch2629.144.432.452.635.842.74.04.939.842.7
 Anterior secondary branch2513.628.019.535.920.524.33.83.723.325.0
 Anterior base/primary branch (cct)2441.354.5  47.63.647.5
 Posterior base2611.423.516.124.317.220.52.82.122.123.7
 Posterior primary branch2827.242.229.549.335.041.63.84.040.043.0
 Posterior secondary branch2712.827.318.129.120.023.64.03.125.927.8
 Posterior base/primary branch (cct)2641.156.8  48.74.555.3