Table 1. List of characters and characters states after de Oliveira Bonaldo et al. (2022), on which the present analysis was based.

Character 40: states modified; characters added: 43–46.

Characters	States
1. Pair of ocelli/eyespot in posterior region of prostomium	0: absent, 1: present
2. Pair of ocelli/eyespot in anterior region of prostomium	0: absent, 1: present
3. Antennae	0: absent, 1: present
4. Shape of antennae	0: simple, 1: biarticulated, 2: more than two articles
5. Palps	0: absent, 1: present
6. Shape of palps	0: simple, 1: biarticulated
7. Length of palps	0: shorter than the first peristomial ring, 1: longer than the first peristomial ring, 2: longer than the second chaetiger
8. Dorsal cirri in the first parapodium	0: absent, 1: present
9. Dorsal cirri on anterior region (first parapodia)	0: absent, 1: present
10. Dorsal cirri on following parapodia (medium and posterior region)	0: absent, 1: present
11. Shape of dorsal cirri	0: simple, 1: biarticulated, 2: long digitiform
12. Acicula in the dorsal cirri	0: absent, 1: present
13. Position of dorsal cirri on the parapodium	0: proximal, 1: middle, 2: distal
14. Ventral cirri on the first parapodium	0: absent, 1: present
15. Ventral cirri on following parapodia	0: absent, 1: present
16. Position of ventral cirri on the parapodium	0: proximal, 1: middle, 2: distal
17. Pygidial (anal) cirri	0: absent, 1: one pair, 2: two pairs
18. Shape of the longer pygidial (anal) cirri	0: simple clavate, 1: annulated, 2: filiform, 3: pseudoannulated
19. Longer pair of pygidial (anal) cirrus	0: dorsal, 1: ventral
20. Number of supra-acicular chaetae	0: one to three. 1: four or more
21. Chaeta which accompanies the capillary in supra-acicular fascicle from anterior region	0: capillary, 1: furcate, 2: geniculate, 3: geniculate with short distal-end
22.Changing in the type of the chaeta which accompanies the capillary in supra-acicular fascicle	0: no, 1: yes
23. Chaeta which accompanies the capillary in supra-acicular fascicle of medium and posterior region	0: capillary, 1: furcate, 2: geniculate
24. Cultriform chaeta replacing the furcate in some chaetigers	0: no, 1: yes
25. Shape of the prong of furcate chaetae	0: blunt, 1: bifid
26. Number of chaetae in the sub-acicular fascicle	0: three or four, 1: more than four
27. Tip of the blade of compound chaetae	0: unidentate, 1: bidentate
28. Thin guard in the tip of compound chaetae	0: absent, 1: present
29. Distal end of shafts of compound chaetae	0: smooth, 1: serrated
30. Cultriform or simple chaeta replacing the ventralmost compound in last chaetigers	0: no, 1: yes
31. Fused teeth in the anterior margin of mandibles	0: absent, 1: present
32. Free teeth in the anterior margin of mandibles	0: absent, 1: present
33. Carriers (or carrier-like structures)	0: absent, 1: present
34. Margin of carriers (or carrier-like structures)	0: smooth, 1: serrated
35. Shape of superior basal plate	0: straight, 1: pincer-like shape, 2: L shape
36. Dentition on the margin of superior plate	0: absent, 1: present
37. Inferior basal plate	0: absent, 1: present
38. Shape of inferior basal plate	0: straight, 1: pincer-like shape, 2: L shape
39. Superior row of maxillary plates	0: absent, 1: present
40. Number of maxillary plates in superior row	0: thirteen or less, 1: more than thirteen, 2: one or two
41. Inferior row of maxillary plates	0: absent, 1: present
42. Number of maxillary plates in inferior row	0: thirteen or less, 1: more than thirteen
43. Extra row(s) of replacement maxillary plates	0: absent, 1: present
44. Enlarged pharynx/enlarged anterior region	0: no, 1: yes
45. Ventral cirri present only in few anterior parapodia	0: no, 1: yes
46. Long spine in the anteriormost free maxillary plate	0: absent, 1: present.