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Comparison of chaetotaxy on frons of Symphylella spp. from China.
| Characters | S.macrochaeta sp. nov. | S.longispina sp. nov. | S.macropora | S.zhongi | S.communa | S.minuta |
|---|---|---|---|---|---|---|
| Number of macrosetae (M) | 10 | 8 | 6 | 8 | 8 | 4 |
| Formula of M-setae | 4/4/2 | 4/2/2 | 2/2/2 | 4/2/2 | 4/2/2 | 0/2/2 |
| length of M-setae (μm) | 58–73 | 21–28 | 25–37 | 22–37 | 20–30 | 12–20 |
| length of a0 setae (μm) | 12–15 | 7–8 | 12 | 12–15 | 10–16 | 7–11 |
| M/a0 | 4–5.6 | 2.8–3.7 | 2–3 | 1.5–2.7 | 1.6–2.7 | 1.4–2.4 |
