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Erratum: Phylogeny of Myzostomida (Annelida) and their relationships with echinoderm hosts.
BMC Evolutionary Biology volume 15, Article number: 53 (2015)
Dr. Mark Grygier has informed us that the spelling of the names for four families is not correct in our paper . He notes that, according to the International Code of Zoological Nomenclature , for genera ending in -stoma (a Greek noun), −stomatidae is correct (Art. 29.3.1), but family names for genera ending in "stomum" (a Greek noun transliterated into Latin with a change in ending), −stomidae is correct (Art. 29.3.2). Therefore the names we referred to as Asteriomyzostomatidae, Asteromyzostomatidae, Protomyzostomatidae, and Pulvinomyzostomatidae are correctly spelled as Asteriomyzostomidae, Asteromyzostomidae, Protomyzostomidae, and Pulvinomyzostomidae.
In our paper it was also drawn to our attention by Dr. Grygier that, in lacking diagnoses, we had not fulfilled the requirements of the International Code of Zoological Nomenclature  for erecting a new genus and family. We correct this below.
Eenymeenymyzostomatidae n. fam. Summers & Rouse
Type genus. Eenymeenymyzostoma n. gen. Summers & Rouse.
Diagnosis. As for generic diagnosis.
ZooBank LSID. urn:lsid:zoobank.org:act:928336E8-6798-4E69-9C6E-148AABC08E30
Eenymeenymyzostoma n. gen. Summers & Rouse
Type species. Myzostoma cirripedium Graff, 1885 – Sagami Bay, Japan, 218 m.
Diagnosis. Body ellipsoidal. Body margin smooth, with 20 cirri. Mouth and cloaca on ventral surface, anus terminal. Five pairs of parapodia with elongate parapodial cirri. Paired penes in line with third pair of parapodia. Lateral organs, alternating with parapodia.
ZooBank LSID. urn:lsid:zoobank.org:act:8C18B8A1-E18B-48C8-A6D1-659729EB0E46
Etymology. This name was chosen for its assonance (suggested by Charles Messing).
Remarks. The new genus and family are erected to accommodate Myzostoma cirripedium Graff, 1885, a taxon that was recovered as sister to the well supported (unnamed) clade comprised of Pulvinomyzostomidae and Myzostomatidae (see Fig 2 in the original paper). There are currently no clear morphological apomorphies for Eenymeenymyzostoma cirripedium, new combination, though its ellipsoidal body shape is unusual among myzostomids. Also the parapodial cirri were noted by Graff  as not being previously seen in other Myzostoma species. However, these cirri are now known for other myzostomids (e.g., Myzostoma polycyclus Atkins, 1927; Myzostoma seymourcollegiorum Rouse & Grygier, 2005) but they are not as elongate as seen in E. cirripedium, new comb. Eenymeenymyzostoma n. gen. is currently monotypic. Sequences for this species were referred to as Endomyzostoma n. sp. 2 in Lanterbecq et al. (2006). Myzostoma metacrini McClendon, 1906 is a junior synonym of E. cirripedium. Other potential members of Eenymeenymyzostoma n. gen. include ten other free-living myzostomid species described from stalked crinoids, excluding Pulvinomyzostomum messingi Summers & Rouse, 2014 ; molecular data are not currently available for these taxa.
Summers M, Rouse GW: Phylogeny of Myzostomida (Annelida) and their relationships with echinoderm hosts. BMC Evol Biol 2014, 14:170.
ICZN: International code on zoological nomenclature. 4th edition. London: The International Trust for Zoological Nomenclature; 1999.
Graff L: Description of a new species of Myzostoma . Trans Linn Soc Ser 2 Zool 1885, 2:444–6.
Summers M, Al-Hakim I, Rouse GW, Turbotaxonomy: 21 new species of Myzostomida (Annelida). Zootaxa 2014, 3873:301–44.
We thank Mark Grygier for drawing our attention to this nomenclatural issue.
The online version of the original article can be found under doi:10.1186/s12862-014-0170-7.
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Summers, M.M., Rouse, G.W. Erratum: Phylogeny of Myzostomida (Annelida) and their relationships with echinoderm hosts.. BMC Evol Biol 15, 53 (2015). https://doi.org/10.1186/s12862-015-0305-5