Table 1.
Measurements and pt values of selected morphological structures of Hypsibius cf. scabropygus Cuénot, 1929 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).
| CHARACTER | N | RANGE | MEAN | SD | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| µm | pt | µm | pt | µm | pt | ||||||
| Body length | 14 | 183 | – | 293 | 808 | – | 1132 | 235 | 949 | 33 | 97 |
| Buccopharyngeal tube | |||||||||||
| Buccal tube length | 15 | 22.0 | – | 28.2 | – | 24.6 | – | 2.0 | – | ||
| Stylet support insertion point | 15 | 12.0 | – | 15.9 | 51.3 | – | 57.1 | 13.5 | 54.9 | 1.1 | 1.6 |
| Buccal tube external width | 15 | 1.5 | – | 2.0 | 6.5 | – | 8.0 | 1.8 | 7.2 | 0.2 | 0.5 |
| Buccal tube internal width | 15 | 0.6 | – | 0.9 | 2.1 | – | 3.4 | 0.7 | 2.7 | 0.1 | 0.4 |
| Placoid lengths | |||||||||||
| Macroplacoid 1 | 15 | 1.8 | – | 3.2 | 7.7 | – | 12.3 | 2.4 | 9.6 | 0.4 | 1.3 |
| Macroplacoid 2 | 15 | 1.7 | – | 2.7 | 7.2 | – | 11.3 | 2.2 | 8.9 | 0.3 | 1.1 |
| Macroplacoid row | 15 | 4.7 | – | 6.3 | 19.1 | – | 26.5 | 5.3 | 21.7 | 0.5 | 1.8 |
| Claw 1 lengths | |||||||||||
| External base | 14 | 2.2 | – | 4.5 | 9.1 | – | 17.2 | 3.5 | 14.1 | 0.7 | 2.1 |
| External primary branch | 14 | 4.0 | – | 8.8 | 18.2 | – | 36.1 | 6.9 | 28.1 | 1.5 | 5.0 |
| External secondary branch | 14 | 2.3 | – | 5.9 | 10.5 | – | 24.4 | 4.4 | 17.9 | 1.0 | 3.9 |
| Internal base | 12 | 2.1 | – | 4.1 | 9.3 | – | 15.5 | 3.3 | 13.4 | 0.6 | 1.8 |
| Internal primary branch | 12 | 3.8 | – | 5.9 | 16.0 | – | 23.5 | 4.8 | 19.3 | 0.6 | 2.0 |
| Internal secondary branch | 12 | 2.4 | – | 4.3 | 9.9 | – | 16.5 | 3.3 | 13.3 | 0.6 | 2.0 |
| Claw 2 lengths | |||||||||||
| External base | 11 | 3.0 | – | 5.2 | 12.4 | – | 19.9 | 4.1 | 16.7 | 0.7 | 2.2 |
| External primary branch | 13 | 6.7 | – | 10.4 | 29.7 | – | 43.7 | 8.5 | 34.7 | 1.3 | 4.4 |
| External secondary branch | 13 | 4.3 | – | 6.7 | 19.0 | – | 27.2 | 5.4 | 21.9 | 0.7 | 2.6 |
| Internal base | 10 | 2.4 | – | 4.5 | 10.9 | – | 18.9 | 3.6 | 14.6 | 0.7 | 2.2 |
| Internal primary branch | 12 | 4.0 | – | 6.7 | 17.7 | – | 27.2 | 5.4 | 22.0 | 0.9 | 2.9 |
| Internal secondary branch | 12 | 2.6 | – | 5.4 | 11.8 | – | 22.0 | 4.1 | 16.7 | 0.9 | 3.0 |
| Claw 3 lengths | |||||||||||
| External base | 9 | 2.7 | – | 6.2 | 11.9 | – | 23.8 | 4.3 | 17.3 | 1.0 | 3.5 |
| External primary branch | 9 | 7.2 | – | 10.4 | 29.3 | – | 43.7 | 8.8 | 35.7 | 1.1 | 4.4 |
| External secondary branch | 9 | 3.6 | – | 6.5 | 12.8 | – | 27.3 | 5.2 | 21.0 | 1.0 | 4.3 |
| Internal base | 11 | 2.3 | – | 4.1 | 10.5 | – | 17.2 | 3.4 | 13.9 | 0.6 | 1.9 |
| Internal primary branch | 13 | 3.8 | – | 6.5 | 17.3 | – | 27.3 | 5.4 | 21.8 | 0.9 | 3.1 |
| Internal secondary branch | 12 | 2.7 | – | 6.1 | 12.2 | – | 24.8 | 3.9 | 16.0 | 0.9 | 3.5 |
| Claw 4 lengths | |||||||||||
| Anterior base | 13 | 3.3 | – | 5.6 | 12.8 | – | 20.1 | 4.1 | 16.8 | 0.6 | 2.2 |
| Anterior primary branch | 13 | 4.4 | – | 7.5 | 19.5 | – | 31.1 | 5.9 | 24.2 | 1.1 | 3.9 |
| Anterior secondary branch | 11 | 3.1 | – | 13.2 | 13.0 | – | 47.3 | 4.8 | 18.9 | 2.9 | 9.7 |
| Posterior base | 12 | 2.7 | – | 5.4 | 12.3 | – | 21.5 | 4.5 | 18.2 | 0.9 | 3.1 |
| Posterior primary branch | 12 | 4.9 | – | 14.9 | 22.0 | – | 60.6 | 10.3 | 41.9 | 2.9 | 11.2 |
| Posterior secondary branch | 12 | 4.0 | – | 6.5 | 15.4 | – | 25.6 | 5.2 | 21.2 | 0.9 | 3.4 |