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Molecular analysis of Spiophanes bombyx complex (Annelida: Spionidae) with description of a new species

Fig 16

Juvenile and adult morphology of Spiophanes hakaiensis n. sp.

(A–E)–live 24-chaetiger juvenile. (A) Complete individual. (B) Anterior end and pygidium, dorsal view. (C) Right palp, frontal view. (D) Posterior chaetigers, left lateral view. (E) Gizzard-like structure, dorsal view. (F) Anterior end of a live adult individual, dorsal view. (G) Left neuropodium of chaetiger 6 of a formalin-fixed 40-chaetigers juvenile, ventral view, showing short neurochaetae and long thin straight fibers protruding from hole-like opening of a glandular organ. Abbreviations: ch5–ch10 –chaetiger 5–10; ci–transverse rows of short motile compound cilia on inner lateral side of palp; dv–main dorsal blood vessel; fg–foregut; fh–fronto-lateral horn; fi–fibers produced by glandular organs; gi–gizzard-like structure; go–glandular organs; mg–midgut; ne–capillary neurochaetae; oe–oesophagus; pg–posterior gut; py–pygidial cirri; sp–notopodial spines with recurved distal end. Scale bars: A, B– 100 μm; C–E, G– 50 μm; F– 300 μm. A–E–British Columbia, Canada, MIMB 36708, F–British Columbia, Canada, CMNA 2019–0105 (holotype). G–Oregon, USA, MIMB 36711.

Fig 16

doi: https://doi.org/10.1371/journal.pone.0234238.g016