Asteromyzostomum grygieri Summers, Al-Hakim & Rouse, 2014, n. sp.

• Main Authors: Summers, Mindi M., Al-Hakim, Iin Inayat, Rouse, Greg W.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Myzostomida; Asteromyzostomidae; Asteromyzostomum; Asteromyzostomum grygieri; Elephant Island; Rouse; Sladen; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/6138486; https://doi.org/10.5281/zenodo.6138486

Asteromyzostomum grygieri n. sp. Summers & Rouse Fig. 1 Asteromyzostomum sp.— Grygier (1988); Grygier (2000); Lanterbecq et al. (2006) Holotype: SIO-BIC A 3801 (S 6950) hologenophore (1 spm: 95 % ethanol). Elephant Island, Antarctica (Stn. E 1- 82) (61 °09.0527’S, 54 ° 11.8609 ’W), 222– 247 m. Collected via the R/V Nathaniel B. Palmer using a Blake trawl on 22 October 2011 by Nerida Wilson, GWR, MMS, and science team. Genbank (COI—KM014170). Host. Labidiaster annulatus Sladen (Heliasteridae, Forcipulatida. Asteroidea). Paratypes: SIO-BIC A 3232 (S 4392) syngenophores (2 spms: in 70 % ethanol after formalin fixation). Elephant Island, Antarctica (Stn. EI- 79) (61 ° 10.4189 ’S, 54 ° 11.9508 ’W), 223– 242 m. Collected via the R/V Nathaniel B. Palmer using a Blake trawl on 22 October 2011 by Nerida Wilson, GWR, MMS, and science team. Host: Labidiaster annulatus. SIO-BIC A 3836 (S 6947) syngenophore (1 spm: 95 % ethanol). Elephant Island, Antarctica (Stn. EI- 79) (61 ° 10.4189 ’S, 54 ° 11.9508 ’W), 223– 242 m. Collected via the R/V Nathaniel B. Palmer using a Blake trawl on 22 October 2011 by Nerida Wilson, GWR, MMS, and science team. Host: Labidiaster annulatus. SIO-BIC A 3554 (S 20195) syngenophores (2 spm: 1 —in 70 % ethanol after formalin fixation; 1—95 % ethanol). South Georgia, Antarctica (Stn. SG 4-5) (53 ° 42 ' 54.4 "S, 36 ° 50 ' 8.5 "W), 190 m. Collected via the R/V Nathaniel B. Palmer using a Blake trawl on 16 April 2013 by Nerida Wilson, GWR, and science team. Host: Labidiaster annulatus, SIO-BIC E 6160 (S 20209). Etymology. Named for Mark Grygier, who first discovered this species. We also name this species to acknowledge his significant contributions to myzostomid taxonomy. Diagnosis and description. Specimens recovered on sides of arms and in ambulacral groove, mouth piercing through body wall of host (Fig. 1 A–C). Holotype body wider than long, approximately 6 mm long and 8 mm wide following fixation. Posterior margin composed of convoluted, lobular folds. Body margin acirrate. Five pairs of ...