Pseudochitinopoma

Diagnosis (after ten Hove and Kupriyanova 2009). Tube white opaque, with longitudinal keel, subtriangular or triangular in cross-section or with more or less regular transverse ridges. Hyaline granular overlay may be present. Operculum inverse conical with distal chitinous cap. Peduncle circular to rounded triangular in cross-section, about twice as wide as radiole, without wings or pinnules, sometimes separated from ampulla by constriction; inserted at base of left branchial lobe, in front of first radiole or almost midway between branchial lobes. Pseudoperculum absent. Radioles in semi-circles to short pectinate arrangement, with up to 10 radioles per lobe, interradiolar membrane absent; stylodes absent. Branchial eyes absent. Mouth palps absent. Seven or six thoracic chaetigerous segments. Collar trilobed, tonguelets between medial and latero-dorsal lobes absent. Pairs of small, wart-like protuberances of collar chaetiger absent. Thoracic membranes short, ending at chaetiger 2 or 3. Collar chaetae finand-blade, with distal limbate zone and proximal wing not well separated, and limbate. Remaining thoracic chaetae all limbate. Apomatus chaetae absent. Thoracic uncini saw-shaped, with 9 – 12 teeth above flat gouged peg. Triangular depression absent. Abdominal chaetae hollow trumpet-shaped, narrow and smoothly bent, with long lateral tip. Abdominal uncini rasp-shaped, with 9 – 11 teeth in profile, 3 – 4 teeth in a row above gouge shaped peg. Achaetous anterior abdominal zone absent. Long posterior capillary chaetae and posterior glandular pad absent.

Type species Hyalopomatopsis occidentalis Bush, 1905, by original designation