Figures & data
Table I. Sampling data
Figure 1. Structure of neptyid chaetae. A–D, internal structure of postacicular chaetae: A, basal part of chaeta (A. malmgreni); B, broken serrate chaeta (N. hombergii); C,D, ruptured spinose chaeta with ‘combs’ (N. ciliata); E, basal part of barred chaeta (N. paradoxa); F, median part of barred chaeta (A. malmgreni); G, basal part of barred chaeta (N. ciliata); H, distal part of barred chaeta (N. ciliata); I, internal structure of broken barred chaeta (N. sp. nov); J, capillary chaeta (A. malmgreni); K, capillary chaeta (A. malmgreni); L,M, chaeta with tiny spines (apparently smooth using LM): L, N. cirrosa, M, N. assimilis; N, lyrate chaeta (A. dibranchis); O, lyrate chaeta (M. oculifera, LM) . Scale bars: all 10 μm. A,E,F and J drawn using LM; others SEM (except O).
Figure 2. Serrate chaeta. A, sketch of general view (N. kersivalensis); B, start of small scattered spines (N. hombergii); C, irregular rows of spines (N. kersivalensis); D,E, small spines transitioning into single lateral row of large spines (N. hombergii); F, lateral row of large spines (N. hombergii); G, same (N. hysticis). Scale bars: all 10 μm. A and G drawn using LM, others SEM.
Figure 3. Geniculate chaeta (N. cirrosa). A, sketch of median portion by LM; B,C, small scattered spines transitioning into single lateral row of large spines; D,E, middle part of geniculate chaeta. Scale bars: all 10 μm. A drawn using LM, others SEM.
Figure 4. Spinose chaeta with combs. A, sketch of general view; B, base of chaeta, showing longitudinal striation of collagen fibrils; C,J,K, scattered spines combine in irregular, then regular rows; D,L, middle part of chaeta with combs; E, reduced combs in subdistal region of chaeta; F, small scattered spines toward distal part of chaeta; G, smooth tip of chaeta showing longitudinal striation of collagen fibrils; H,I, examples of optical aberrations regarding relative length of spines; L,M, detached combs. Scale bars: all 10 μm. M, N. longosetosa, others A. malmgreni; A–I, drawn using LM, others SEM.
Figure 5. Middle parts spinose chaetae of arctic and north-boreal Nephtys. A,B, N. caeca; C,D, N. ciliata; E,F, N. longosetosa ; G,H, N. paradoxa ; I,J, N. pente; K,L, N. rickettsi. Scale bars: all 10 μm; SEM.
Figure 6. Serrate chaetae of south boreal-lusitanian Nephtys. A–C, N. cirrosa, geniculate chaetae; D–F, N. hombergii; G–I, N. hystricis; J–L, N. kersivalensis; M–O, N. assimilis A,D,E,G,J,K,M,N, lower parts, others middle parts; SEM. Scale bars: all 10 μm.
Figure 7. Spinose chaetae (middle parts) showing differences between genera and species. A,B, A. malmgreni; C–E, A. rubellus; F–H, N. ciliata. Scale bars: all 10 μm; SEM.
Figure 8. Serrate chaetae of arctic and north-boreal Micronephthys. A–D, M. minuta; E–G, M. neotena. A,G, lower parts, others middle parts. Scale bars: all 10 μm; SEM.
Figure 9. Chaetae of south boreal-lusitanian Micronephthys hartmannschroederae. A, spinose; B, serrate. Scale bars: all 10 μm. Both LM drawings, middle parts.
