Capitellidae species. A Capitella capitata complex, whole body, lateral view and B anterior view, arrow point genital spines in 9th chaetiger C Heteromastus filiformis, thoracic region, lateral view D Mediomastus californiensis, thoracic region, lateral view. Scale bars: 0.5 mm.

 
 
  Part of: Ribeiro RP, Alves PR, Almeida ZS, Ruta C (2018) A new species of Paraonis and an annotated checklist of polychaetes from mangroves of the Brazilian Amazon Coast (Annelida, Paraonidae). ZooKeys 740: 1-34. https://doi.org/10.3897/zookeys.740.14640