Table 3. Measurements for adult Echinoderes serratulus sp. nov. (in micrometers). Columns N and SD are sample size and standard deviation, respectively.
| Character | N | Range | Mean | SD |
| TL | 5 | 321-359 | 348 | 15.32 |
| MSW-6 | 5 | 62-69 | 66 | 3.09 |
| MSW-6/TL | 5 | 17.9-19.9% | 18.9% | 1.00% |
| SW-10 | 5 | 54-59 | 56 | 1.76 |
| SW-10/TL | 5 | 15.1-17.0% | 16.1% | 0.81% |
| S1 | 5 | 36-39 | 37 | 1.25 |
| S2 | 5 | 33-37 | 35 | 1.82 |
| S3 | 5 | 28-31 | 30 | 1.21 |
| S4 | 5 | 31-34 | 33 | 1.28 |
| S5 | 5 | 34-38 | 37 | 1.68 |
| S6 | 5 | 38-42 | 40 | 1.51 |
| S7 | 5 | 40-48 | 45 | 2.86 |
| S8 | 5 | 46-53 | 50 | 2.67 |
| S9 | 5 | 47-53 | 50 | 2.37 |
| S10 | 5 | 44-46 | 45 | 0.66 |
| S11 | 5 | 44-48 | 46 | 1.75 |
| MD4 (ac) | 5 | 10-14 | 12 | 1.68 |
| LV5 (tu) | 5 | 11-13 | 12 | 1.14 |
| SL6 (ac) | 5 | 9-12 | 10 | 1.53 |
| SL7 (ac) | 5 | 9-13 | 11 | 1.71 |
| LV8 (tu) | 5 | 9-13 | 12 | 1.59 |
| ML9 (tu) | 5 | 16-21 | 19 | 1.96 |
| LD10 (tu) (m) | 3 | 39-41 | 40 | 1.11 |
| LD10 (tu) (f) | 2 | 16-17 | 17 | 0.96 |
| LTS | 5 | 44-49 | 46 | 1.65 |
| LTAS | 2 | 20-21 | 20 | 0.66 |
| LTS/TL | 5 | 12.4-14.7% | 13.4% | 0.86% |
| LTAS/TL | 2 | 5.6-5.8% | 5.7% | 0.11% |
Abbreviations: (ac), acicular spine; (f), female; LD, length of laterodorsal tubule; LTAS, length of lateral terminal accessory spine; LTS, length of lateral terminal spine; LV, length of lateroventral tubule; (m), male; MD: length of middorsal acicular spine; ML, length of midlateral tubule; MSW, maximum sternal width; S, segment length; SL, length of sublateral acicular spine; SW, standard width; TL, trunk length; (tu), tubule.