A new species of the sanguinea-group Quatrefages, 1866 (Annelida: Eunicidae: Marphysa) from the Philippines

Christopher J. Glasby*, Mary Anne E. Mandario, Ingo Burghardt, Elena Kupriyanova, Laetitia M. Gunton, Pat A. Hutchings

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)


A new species of the Marphysa sanguinea group, M. iloiloensis n. sp. (Annelida: Eunicida: Eunicidae), is described from the Marine Annelids Hatchery of the Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC-AQD), Iloilo Province, Philippines. It represents the first record of this group in the Philippines. The new species is most similar morphologically to M. hongkongensa Wang, Zhang & Qiu, 2018, but can be distinguished from it by having fewer branchial filaments, a pair of faint eyes (absent in M. hongkongensa), and in slight differences in jaw morphology and chaetation. The embryos of the new species develop inside a jelly cocoon attached to the entrance of the adult burrow; this is the first time that egg-containing cocoons have been found in any species of the sanguinea-group. Phylogenetic analysis based on the mitochondrial gene cytochrome c oxidase subunit I (COI) revealed that Marphysa iloiloensis n. sp. is genetically distinct from all other analysed Marphysa species and forms a sister group to M. hongkongensa. A revised identification key to members of the sanguinea-group in Southeast Asia is provided.

Original languageEnglish
Pages (from-to)264-282
Number of pages19
Issue number2
Publication statusPublished - 24 Sep 2019


  • Aquaculture
  • Bloodworm
  • COI
  • Fish farm
  • Polychaeta
  • Systematics
  • Taxonomy

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