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FIGURE 12 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 12. Serpulids in the Mexican Pacific. A. Hydroides inermis, operculum; B – C. H. ochotereana, operculum and spine; D. H. panamensis, operculum; E. H. sanctaecrucis, operculum; F. H. similis, operculum; G. H. trompi, operculum; H. Pomatostegus kroyeri, operculum.

FIGURE 11 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 11. Serpulids in the Tropical Eastern Pacific. A. Hydroides cf. amri, operculum and detail of verticil spine (modified of Bastida-Zavala & ten Hove 2003); B. H. brachyacantha, operculum; C. H. crucigera, operculum; D. H. deleoni, operculum; E. H. dirampha, operculum; F – G. H. elegans, sclerotized operculum in aboral view and fleshy operculum in lateral view; H. H. gairacensis, operculum; I. H. glandifera, operculum; J. H. humilis, operculum.

FIGURE 8 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 8. Distribution of Spirobranchus incrassatus, S. minutus, Vermiliopsis multiannulata and Salmacina tribranchiata.

FIGURE 7 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 7. Distribution of and Pomatostegus kroyeri, Protula balboensis, Pseudovermilia occidentalis and Pyrgopolon ctenactis.

FIGURE 9 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 9. Gross scheme of the likely routes followed by introduced sabellids and serpulids: 1) Branchiomma bairdi, Crucigera websteri, Hydroides elegans, H. gairacensis, H. salazarvallejoi, H. sanctaecrucis, Pseudovermilia multispinosa and Pyrgopolon ctenactis; 2) Protula balboensis and Spirobranchus minutus; 3) Parasabella pallida, H. dirampha and H. elegans; 4) Ficopomatus miamiensis; 5) H. crucigera; 6) Pseudobranchiomma punctata; 7) F. miamiensis; 8) B. bairdi, H. elegans (?), H. gairacensis and H. sanctaecrucis; 9) Ficopomatus uschakovi.

FIGURE 3 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 3. Distribution of Ficopomatus uschakovi, Crucigera websteri, Hydroides cf. amri, H. brachyacantha and H. crucigera.

FIGURE 2 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 2. Distribution of the sabellids Branchiomma bairdi, Megalomma carunculata, Parasabella pallida and Pseudobranchiomma punctata in the Tropical Eastern Pacific, Southern California and Hawaii.

FIGURE 10 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 10. Sabellids and serpulids in the Mexican Pacific. A. Branchiomma bairdi, anterior part; B – C. Megalomma carunculata, anterior part and caruncle; D. Parasabella pallida, anterior part; E – F. Pseudobranchiomma punctata, body and detail of abdominal section; G. Ficopomatus uschakovi, anterior part; H – I. Crucigera websteri, opercula, lateral and aboral side (colors in life and preserved).

FIGURE 1 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

FIGURE 1. Study area. The Tropical Eastern Pacific, Southern California and Hawaii, with main geographical names mentioned in text.

Fig. 11. Bayesian inference trees. A. 16S rRNA dataset. B. Cytochrome oxidase I in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 11. Bayesian inference trees. A. 16S rRNA dataset. B. Cytochrome oxidase I gene dataset. The first value at each node represents maximum likelihood bootstrap support, the second the Bayesian posterior probabilities and the third the maximum parsimony bootstrap support.

Fig. 10 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 10. Myxicola polychroma sp. nov. A. Radiole tip illustrating basal membrane and extent of pinnulae (NMW.Z.2019.023.0024). B. Cross-section of radiole (NMW.Z.2019.023.0018). C–G. NMW.Z.2019.023.0024. C. Dorsal lips, ventral lips and radiolar lobes. D. Anterodorsal view showing ventral lobe and glandular ridge. E. Thoracic chaeta, chaetiger 4. F. Thoracic uncinus, chaetiger 4. G. Abdominal uncinus, chaetiger 12. Scale bars: A, C–D = 1 mm; B = 100 µm; E–F = 50 µm; G = 20 µm.

Fig. 8 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 8. Myxicola polychroma sp. nov. A. Anterodorsal view (NMW.Z.2019.023.0023). B. Anterodorsal view (holotype, NMW.Z.2019.023.0015). C. Radiolar tips (NMW.Z.2019.023.0024). D. Dorsal and ventral lips (NMW.Z.2019.023.0023). E. Anterolateral view (NMW.Z.2019.023.0023). F. Tube. Scale bars: A, F = 10 mm; B–C = 5 mm; D–E = 1 mm.

Fig. 7 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 7. Images of live Myxicola polychroma sp. nov. demonstrating different colour morphs. A. White crown, Martin's Haven, Wales. B. Orange crown, Martin's Haven, Wales. C. Green crown, Loch Duich, Scotland. D. Orange body, Loch Duich, Scotland. E. White-cream body, Loch Duich, Scotland. Photos courtesy of Rhian Lewis James (A–B) and Chris Rickard (C–E).

Fig. 9 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 9. Myxicola polychroma sp. nov., NMW.Z.2019.023.0024. A. Thoracic chaetae, chaetiger 4, white arrow indicates thoracic uncini. B. Thoracic uncini, chaetiger 4. C. Abdominal chaetae, chaetiger 11. D. Abdominal uncini, top view. E. Abdominal uncini, lateral view. Scale bars: A = 100 µm; B, D–E = 10 µm; C = 50 µm.

Fig. 5 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 5. Myxicola infundibulum (Montagu, 1808), NMW.Z.2019.023.0002. A. Thoracic chaetae, chaetiger 1. B. Thoracic chaetae, chaetiger 4, white arrow indicates thoracic uncini. C. Thoracic uncini, chaetiger 4. D. Abdominal uncini, chaetiger 9. Scale bars: A = 200 µm; B = 20 µm; C–D = 10 µm.

Fig. 3 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 3. Images of live Myxicola infundibulum (Montagu, 1808) demonstrating different colour morphs. A. White crown, Portland Harbour, England. B. Pink crown, Portland Harbour, England. C. Red crown, Gann Flats, Wales. D. Cream-yellow body, Kingsbridge estuary, England. E. Orange body, Kingsbridge estuary, England.

Fig. 4 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 4. Myxicola infundibulum (Montagu, 1808). A–D. Neotype (NMW.Z.2019.023.0001). A. Antero-dorsal view. B. Anteroventral view. C. Radiolar tips. D. Dorsal and ventral lips, anterior view. E. NMW.Z.2019.023.0003. Live specimen in tube, entire. F. Neotype (NMW.Z.2019.023.0001). Anterolateral view. Scale bars: A–B, E–F = 10 mm; C–D = 1 mm.

Fig. 2 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 2. Map showing the type localities of both valid (bold type) and invalid species of Myxicola in Europe.

Fig. 1 in Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK

Fig. 1. Map showing the distribution of Myxicola infundibulum (Montagu, 1808) (closed circles) and M. polychroma sp. nov. (open circles) around the British Isles, based on validated specimens and photographs. Grey circles indicate an undetermined species of Myxicola in northeast England. Type locality of Myxicola infundibulum indicated by black arrow.