Myzostoma josefinae
- Dataset
- Turbo-taxonomy: 21 new species of Myzostomida (Annelida)
- Rank
- SPECIES
- Published in
- Summers, Mindi M., Al-Hakim, Iin Inayat, Rouse, Greg W. (2014): Turbo-taxonomy: 21 new species of Myzostomida (Annelida). Zootaxa 3873 (4): 301-344, DOI: 10.11646/zootaxa.3873.4.1
Classification
- kingdom
- Animalia
- phylum
- Annelida
- class
- Polychaeta
- order
- Myzostomida
- family
- Myzostomidae
- genus
- Myzostoma
- species
- Myzostoma josefinae
diagnosis
Diagnosis and description. Holotype body circular disc with two elongated, cylindrical caudal appendages, approximately as long as body (Fig. 5 A – D). Length ~ 2.1 mm; width ~ 1 mm, following fixation. Body margin with 18 cirri, alternating in length, most anterior pair up to twice as long as the rest (Fig. 5 C – D). Caudal appendages with long terminal cirri. Mouth terminal. Proboscis smooth [seen in paratypes]. Cloaca terminal, between caudal appendages. Paired penes. Five pairs of parapodia, positioned two-thirds of way from center of disc to margin.
discussion
Remarks. Myzostoma josefinae n. sp. is the first myzostomid with paired elongate caudal appendages described from the eastern Pacific and Psathyrometra fragilis. Four other species are known to possess paired elongate caudal appendages, two recovered on Antedonidae, one from Comatulidae, one possibly with a Mariametroidea, and one associated with an uncertain host (Table 1).
etymology
Etymology. Named for Josefin Stiller, an enthusiast of polychaetes.
materials_examined
Holotype: SIO-BIC A 4016 paragenophore (1 spm: in 70 % ethanol after paraformaldehyde / glutaraldehyde fixation). Near ‘ Francisco’ whalefall, Monterey Canyon, California (36 ° 46 ' 19.1994 " N, 122 ° 4 ' 58.7994 " W), 1020 m. Collected via the R / V Western Flyer using the ROV Doc Ricketts (Dive 9) on 10 March 2009 by GWR. Host. Psathyrometra fragilis (AH Clark). SIO-BIC E 4567. Genbank (COI — KM 491780). Paratypes: SIO-BIC A 3798 paragenophores (7 spms: 6 — in 70 % ethanol after paraformaldehyde / glutaraldehyde fixation; 1 — 95 % ethanol). Same host and locality as holotype. Genbank (COI — KM 014189). SIO- BIC A 3829 syngenophores (12 spms: 6 spms — in 70 % ethanol after paraformaldehyde / glutaraldehyde fixation; 6 spms — 95 % ethanol). Guaymas Basin (26 ° 45 ' 12.8514 " N, 111 ° 10 ' 19.632 " W), 1314 m. Collected via the R / V Western Flyer using the ROV Doc Ricketts (Dive 390) on 16 April 2012 by GWR. Genbank (COI — KM 491749). Host: Psathyrometra fragilis (AH Clark, 1907), SIO-BIC E 6149 (DNA subsample only).
Name
- Homonyms
- Myzostoma josefinae