Table 4 in Taxonomic reanalysis of the genus Richtersius (Tardigrada; Eutardigrada), with description of two new species from Italy and Sweden

Table 4 (continued on next page). Measurements (in μm) and pt values of selected morphological structures of hatchlings of Richtersius nicolai sp. nov. Specimens mounted in Hoyer’s medium. Range refers to the smallest and the largest structure among all measured specimens. Abbreviations: N = number of specimens/structures measured; SD = standard deviation.
CharacterNRange µm ptMean µm ptµmSDptBody length5294 – 359526 – 6533306082553Buccal tubeBuccal tube length652.2 – 55.954.41.5Stylet support insertion point537.3 – 38.267.8 – 71.337.869.80.41.3Buccal tube external width63.5 – 4.26.2 – 7.73.87.00.30.6Buccal tube internal width61.1 – 1.72.1 – 3.21.42.60.20.4Ventral lamina length320.5 – 27.338.5 – 48.823.442.73.55.4Placoid lengthsMacroplacoid 165.8 – 7.310.4 – 13.76.211.50.61.2Macroplacoid 264.8 – 6.68.6 – 12.35.710.40.61.3Placoid row612.2 – 15.521.8 – 29.113.224.31.22.6Claw I heightsExternal base56.8 – 8.412.5 – 16.07.513.90.81.8External primary branch512.4 – 15.122.7 – 29.013.725.41.12.4External secondary branch59.4 – 10.716.9 – 20.49.918.30.51.3External base/primary branch (cct)548.2 – 64.054.95.8Internal base55.8 – 7.810.7 – 14.96.912.80.71.6Internal primary branch511.9 – 14.821.8 – 27.013.024.01.12.1Internal secondary branch59.2 – 11.516.7 – 21.09.918.41.02.0Internal base/primary branch (cct)549.0 – 60.053.54.5Claw II heightsExternal base46.3 – 9.911.6 – 18.58.315.21.63.0External primary branch413.5 – 14.624.8 – 27.514.226.00.51.2External secondary branch49.8 – 11.317.7 – 21.210.318.80.71.6External base/primary branch (cct)443.7 – 67.458.410.7Internal base36.5 – 9.111.9 – 16.78.215.01.42.7Internal primary branch313.2 – 14.024.8 – 25.413.725.10.40.3Internal secondary branch39.9 – 10.618.4 – 19.410.318.80.30.5Internal base/primary branch (cct)346.9 – 67.259.711.2Claw III heightsExternal base47.9 – 9.014.5 – 16.98.615.90.51.0External primary branch413.0 – 14.323.3 – 26.813.625.30.61.8External secondary branch410.2 – 10.518.2 – 19.710.319.20.10.7External base/primary branch (cct)459.8 – 69.163.04.4Internal base47.1 – 7.812.8 – 15.07.614.10.31.0Internal primary branch411.8 – 13.421.0 – 25.212.623.40.71.7Internal secondary branch48.3 – 10.814.9 – 19.99.718.11.12.2Internal base/primary branch (cct)457.2 – 63.560.32.6Claw IV heightsAnterior base48.9 – 11.415.9 – 21.310.018.51.12.5Anterior primary branch416.6 – 19.029.7 – 35.817.933.21.12.9Anterior secondary branch412.0 – 13.121.9 – 24.612.423.00.51.3Anterior base/primary branch (cct)452.8 – 59.655.63.1Posterior base47.7 – 10.414.0 – 19.09.317.21.32.3Posterior primary branch416.0 – 18.729.9 – 33.516.931.31.21.7Posterior secondary branch411.1 – 13.421.2 – 24.011.922.01.01.3Posterior base/primary branch (cct)447.0 – 63.655.16.8Number of teeth on internal lunula III511 – 1412.41.5Number of teeth on external lunula III59 – 1612.22.6Number of teeth on anterior lunula IV411 – 1211.80.5Number of teeth on posterior lunula IV48 – 2314.56.4Pore density (PD)59 – 1110.20.8Pore size490.9 – 2.11.40.3