Systematic affinities of Zygophylacidae (Cnidaria: Hydrozoa: Macrocolonia) with descriptions of 15 deep-sea species Author Gu, Zhangjie Author Ruthensteiner, Bernhard Author Moura, Carlos J. Author Liu, Lihua Author Zhang, Rui Author Song, Xikun text Zoological Journal of the Linnean Society 2022 Zool. J. Linn. Soc. 2022-06-17 196 52 87 http://zoobank.org/22984f44-21e0-43ab-9d46-547c8306448a journal article 133182 10.1093/zoolinnean/zlac036 f1c43083-ab5f-4130-82f0-0418e8954791 0024-4082 7035312 22984F44-21E0-43AB-9D46-547C8306448A ZYGOPHYLAX CF. SAGAMIENSIS HIROHITO, 1983 ( FIG. 18 ) Zygophylax sagamiensis Hirohito, 1983: 6 , 30–31, fig. 11; Rees & Vervoort, 1987: 85–86 ; Hirohito, 1995: 144 , fig. 44a–e, pl. 9, fig. C; Vervoort & Watson, 2003: 69 ; Figure 18. Zygophylax cf. sagamiensis Hirohito, 1983 . A, a colony; B, F, G, images of the same coppinia; C, alternate hydrothecae with one nematotheca (arrow); D, hydrothecae and nematothecae (arrows); E, magnification of a nematotheca; H, two (fused) gonothecae. From samples: A–H: XMUB8109, South China Sea. A–C, light microscope images; D–H, SEM images. Scale bars: A = 5 mm; B = 500 µm; C, D, F = 200 µm; E = 20 µm; G, H = 100 µm. Watson, 2003: 160–161 , fig. 10A–F; 2006: 245–247, fig. 20. Type locality: Sagami Bay , Japan ; 250–300 m . Specimens examined: Two fertile and 10 infertile colonies from South China Sea; see details in Supporting Information, Table S1 . Molecular sequences: 16S rRNA, 18S rRNA and COI genes (this study); see sequence details in Supporting Information, Table S3 .