Taxonomy of Serpulidae (Annelida, Polychaeta): The state of affairs Author Ten Hove, Harry A. Author Kupriyanova, Elena K. text Zootaxa 2009 2009-03-16 2036 1 126 journal article 1175­5334 15888B41-A000-4611-BEC8-F9359D1149CD 17. Janita Saint-Joseph, 1894 ( Fig. 24 ) Type-species : Omphalopoma spinosa Langerhans, 1884 , = junior synonym of Serpula fimbriata delle Chiaje, 1822 Number of species: 1 FIGURE 24. SEM micrographs of chaetae in SEM micrographs of Janita fimbriata . France, Marseille, det. and don. H. Zibrowius, ZMA V.Pol. 3033. A—lateral view of entire animal, B— Spirobranchus type collar chaeta, C— Apomatus chaeta, D—anterior abdominal chaeta, E—thoracic uncini, F—posterior abdominal uncini. Tube white, sub-circular in cross-section, with 5 longitudinal winding ridges. Granular overlay absent. Operculum bell-shaped, ending in simple thick brown concave endplate; opercular base surrounded by three fleshy processes, one triangular and two rounded ones, not unlike those figured for Crucigera zygophora by ten Hove & Jansen-Jacobs (1984 fig. 9C). Peduncle cylindrical, slightly compressed dorso-ventrally and wrinkled; inserted below and between first and second normal radiole (below second in larger specimens). Pseudoperculum absent. Arrangement of radioles short pectinate, up to 12 radioles per lobe. Inter-radiolar membrane and stylodes absent. Branchial eyes present, reported as stalked eyes at base of pinnules by Langerhans (1884 fig. 45a). Mouth palps present. 7 thoracic chaetigerous segments. Collar pentalobate, medioventral lobe divided by deep median and two shallow incisions. Tonguelets absent. Thoracic membranes short, ending at second thoracic chaetiger. Collar chaetae of Spirobranchus type ( Fig. 24B ), acicular and limbate. Apomatus chaetae present ( Fig. 24C ). Thoracic uncini saw-shaped with up to 16 teeth, anterior peg blunt, questionably gouged ( Fig. 24E ). Triangular depression absent. Anterior abdominal uncini saw-shaped, posterior rasp-shaped ( Fig. 24F ), with approximately 13 teeth in profile, 3–5 teeth per row. Abdominal chaetae flat narrow geniculate, with a more or less crenulated edge to the blade ( Fig. 24D ). Achaetous anterior abdominal zone very short or absent. Long posterior capillary chaetae absent. Posterior glandular pad present. Remarks . The genus Janita was erected by Saint-Joseph for Omphalopoma spinosa Langerhans, 1884 , which is a junior synonym of Serpula fimbriata delle Chiaje, 1822 (see e.g., Fauchald, 1977: 144 , Lommerzheim 1979: 157 ). There was a considerable confusion about generic attribution of this species, generally it has been attributed to Omphalopomopsis . Zibrowius (1972b) points out that the distinction between Janita and Omphalopomopsis is justified due to having very different opercula: O. langerhansi has a simple globular operculum with a shallow concave calcareous endplate, J. fimbriata has a more complex operculum with a deeply cupped chitinous endplate, which has a horny talon into the fleshy opercular ampulla ( Imajima, 1979 ). It should be noted that Rioja (1923) and Fauvel (1927) mentioned both “ Spirobranchus ” type and acicular collar chaetae for Janita fimbriata (as Omphalopomopsis ); ( Zibrowius (1968a) on the other hand regarded the “acicular” chaetae as misinterpretation of “ Spirobranchus ” type , observed from the back (not in lateral view). Martín (1989) assumed that specimens with acicular collar chaetae and those with “ Spirobranchus ” type chaetae belong to different taxa. Ben-Eliahu & Fiege (1996) mentioned specimens with one or the other type of collar chaetae from a single population of what they regard to be J. fimbriata ; ten Hove (in Ben-Eliahu & Fiege 1996 ) mentioned a specimen with both types . The phenomenon merits further attention. The monotypic genus is distributed in the (sub) tropical Atlantic, Mediterranean ( Zibrowius 1972b , 1973b , Bianchi 1981 , Bianchi et al. 1984 ), and Indo-West Pacific ( Imajima & ten Hove, 1984 , 1986 , ten Hove 1994). See also remarks following Omphalopomopsis . Janita fimbriata (delle Chiaje, 1822), (sub)tropical Atlantic, Mediterranean, Indo-West Pacific.