A closer look at the taxonomic and genetic diversity of endemic South African Quatrefages, 1865.

The current study investigates the final unresolved cosmopolitan species of in South Africa, , collected from KwaZulu Natal, Eastern and Western Cape provinces, together with another species collected from northern KwaZulu Natal. Morphological and genetic data prove that , originally described from Hawaii, does not occur in South Africa. The curvature of the inner base on maxilla I, the elevated inner base of maxilla II, and the ventral cirrus as a transverse welt with a rounded tip allow us to identify it as a new species of sp.

Morphometric approach supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae).

In this study, we performed a morphometric approach of 23 quantitative features of Paucibranchia bellii (Audouin Milne-Edwards, 1833), P. disjuncta (Hartman, 1961), and P. carrerai Molina-Acevedo, 2018 in order to evaluate their importance in interspecific discrimination.

Morphological and molecular systematic review of Quatrefages, 1865 (Annelida: Eunicidae) species from South Africa.

A vast polychaete fauna is hidden behind complexes of cryptic and pseudo-cryptic species, which has greatly hindered our understanding of species diversity in several regions worldwide. Among the eunicids, Montagu, 1813 is a typical example, recorded in three oceans and with various species considered its junior synonyms. In South Africa, specimens previously misidentified as are now known as Lewis & Karageorgopoulos, 2008.

Reinstatement of species belonging Marphysa sanguinea complex (Annelida: Eunicidae) and description of new species from the mid-Pacific Ocean and the Adriatic Sea.

Marphysa sanguinea Montagu, 1813, the type species of genus Marphysa, was described with few characteristics and subsequently reported in tropical and temperate waters as a cosmopolitan species. Recent comparative studies have shown that M. sanguinea has a limited distribution to the Northeast Atlantic.

Morphological revision of the Subgroup 1 Fauchald, 1970 of Marphysa de Quatrefages, 1865 (Eunicidae: Polychaeta).

Fifteen species of Marphysa classified in the Subgroup 1 Fauchald (1970) were reviewed and evaluated in a morphological analysis of the subgroup. It was found that 13 of these have a characteristic morphological pattern distinct from that of Marphysa sensu stricto; as a consequence, a new genus is proposed, Paucibranchia n. gen.

Revision of de Quatrefages, 1865 and some species of Kinberg, 1865 with the erection of a new genus (Polychaeta: Eunicidae) from the Grand Caribbean.

Nine species of Marphysa from the Grand Caribbean Region are recognized and described based on the type and non-type specimens. One species is formally described as new: M. emiliae n.

Reinstatement of three species of the Marphysa sanguinea complex (Polychaeta: Eunicidae) from the Grand Caribbean Region.

As part of a study on Marphysa de Quatrefages, 1865 from the Grand Caribbean, three species regarded as junior synonyms of M. sanguinea (Montagu, 1913) were studied to clarify their taxonomic status. The examination of type and additional materials collected in the southern Gulf of Mexico and the Mexican Caribbean regions, allowed us to clarify that M.