FIGURE 3 in A new species of Mesochaetopterus (Annelida, Chaetopteridae) from Hong Kong, with comments on the phylogeny of the family

FIGURE 3. The chaetae of Mesochaetopterus tingkokensis n. sp. A–K, SEM micrographs; L–P, optical micrographs showing the shape of uncini. A and B, D–K: paratype IOCAS MBM240651; C: paratype IOCAS MBM240658; L–P: paratype AM W.47811. A, modified chaetae of A4. B, scale-like top surface of modified chaetae of A4. C, knife-like simple chaetae of A4. D, oar-like chaetae with pointed top on lateral side of A5. E, middle oar-like chaetae of A6. F, dorsal lateral lanceolate chaetae with rows of small projections from A3. G, uncini from ventral tori of B1 neuropodia. H, simple chaetae of C1 notopodia. I, uncini from ventral tori of C1 neuropodia. J, uncini in neuropodia from the middle of region C (chaetiger C20). K, uncini from neuropodia of the posterior of region C (chaetiger C34). L, Uncini from B1 neuropodia. M, Uncini from ventral (left) and lateral (right) tori of B2 neuropodia. N, Uncini from ventral (left) and lateral (right) tori of C1 neuropodia. O, Uncini from ventral tori of C20 (middle in region C). P, Uncini from ventral tori of C34 (posterior in region C). Scale bars: A, C–E: 200 µm; B, F, J–P: 20µm; G and I: 30µm; H: 100 µm.