Laminatubus ten Hove & Zibrowius, 1986

Ten Hove, Harry A. & Kupriyanova, Elena K., 2009, Taxonomy of Serpulidae (Annelida, Polychaeta): The state of affairs, Zootaxa 2036, pp. 1-126 : 59

19. Laminatubus ten Hove & Zibrowius, 1986

( Fig. 26)

Type-species: Laminatubus alvini ten Hove & Zibrowius, 1986

Number of species: 1

Tube white, more or less triangular in cross-section, with large undulating longitudinal keel; consisting of two layers: an inner opaque layer and an outer (not granular) hyaline one. Operculum globular, with bulbous proximal ampulla and more or less flattened distal part with thickened cuticle. Peduncle cylindrical, gradually merging into opercular ampulla, constriction absent; inserted to left side, proximal from first and second normal radiole. Pseudoperculum absent. Radioles not connected by inter-radiolar membrane, arranged into slightly ascending spiral of up to two whorls. Up to 33 radioles per lobe. Stylodes and branchial eyes absent. Mouth palps not observed. 6 thoracic chaetigerous segments. Collar with medio-ventral and two latero-dorsal lobes, continuous with thoracic membranes, forming apron. Tonguelets absent. Collar chaetae Spirobranchus - type ( Fig. 26A) and limbate. Apomatus chaetae absent. All uncini saw-shaped with 5–7 teeth, anterior fang simple, pointed ( Fig. 26D, C). Thoracic tori converging posteriorly, forming triangular depression. Abdominal chaetae long, with hollow trumpet-shaped tip, smoothly bent ( Fig. 26D). Posterior chaetae become longer, but posterior capillary chaetae absent. Achaetous anterior abdominal zone absent. Posterior glandular pad absent.

Remarks. The species is a common element of the bathyal hydrothermal vent communities found in the Galapagos rift and the East Pacific Rise.

Laminatubus alvini ten Hove & Zibrowius, 1986 , East Pacific , 1– 21º N; bathyal.