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A Anterior end of Lepidonotus carinulatus showing the dark ring in the antennae and tentacular cirrus (anterodorsal view of the prostomium) B Anterior end showing the dorsal anus in the last chaetigerous segment. Scale bars: 1 mm (A, B). (p, palp; ma, median antennae; la, lateral antennae; tc, tentacular cirri; pr, prostomium; nn, nuchal nodules; dc. Dorsal cirrus; e, elytra; pl, papillae; a, anus; ac, anal cirri.
Source publication
The genus Lepidonotus is the largest in number of species within the Polynoidae, with more than 70 described species and subspecies. A catalogue of 18 nominal species and subspecies of Lepidonotus from South America is provided, with valid names, synonyms and original citations. Redescriptions and illustrations of two species based on new specimens...
Citations
... Polynoid scale-worms have been reported from virtually all oxic benthic marine environments (Jumars et al., 2015), and only six species have been reported as introduced (Çinar, 2013). Three of them are Indo-Pacific/ Red Sea species that entered the Mediterranean through the Suez Canal (i.e., Lessepsian migrants), of which two belong to Lepidonotus Leach, 1816 (Çinar, 2013), a ge-nus containing about 80 valid species (Read & Fauchald, 2022) and occurring from intertidal to bathyal marine environments worldwide (De Assis et al., 2015). ...
Four species of the genus Lepidonotus (Annelida, Polynoidae) have been listed in the Mediterranean, including L. carinulatus (Grube, 1869), L. squamatus (Linnaeus, 1758), L. tenuisetosus (Gravier, 1902) and L. clava (Montagu, 1808), although recent studies confirmed only the presence of the two latter. Based on materials collected in the Radès Area (Gulf of Tunis, Western Mediterranean), we provide a characterization of a population of L. tenuisetosus based on key morphological characters and body width/length relationships and conclude that all previously known Mediterranean reports from Israel, Croatia, Greece, Spain and Turkey did not belong to L. tenuisetosus, but either to L. carinulatus , L. clava or to other, non-identified species. Therefore, our finding represents not only the first correct record of L. tenuisetosus for the Tunisian waters and the Western basin, but for the whole Mediterranean Sea, and allows us to discuss on the possible reasons explaining the presence of this and other species of Lepidonotus in the Mediterranean.
... For species reported for northeastern Brazil, we highlight contributions of De Assis et al. (2012Assis et al. ( , 2019 and Brito et al. (2013). De Assis et al. (2015) provided a catalogue of the genus Lepidonotus Leach, 1816 from South America and reported two exotic species from Brazilian waters. ...
... For species reported for northeastern Brazil, we highlight contributions of De Assis et al. (2012Assis et al. ( , 2019 and Brito et al. (2013). De Assis et al. (2015) provided a catalogue of the genus Lepidonotus Leach, 1816 from South America and reported two exotic species from Brazilian waters. ...
The family Polynoidae includes a group of scale worms which is abundant in several marine environments, and many members are associated with other invertebrates. The genus Harmothoe is one of the largest in number of species within the polynoids, with more than 150 described species. We summarize in a checklist information relative to 23 nominal species of Harmothoe from South America, with valid names, synonyms and original citations, discuss possible taxonomic problems, and provide illustrations of specimens from the northeastern coast of Brazil. Redescriptions of two species based on new specimens collected along the littoral of the State of Pernambuco, northeastern Brazil, are included. Harmotthoe fuscapinae and Harmothoe lanceocirrata are reported for the first time for Brazilian waters. Resumo: Uma lista atualizada de vermes escamosos Harmothoe (Annelida, Polynoidae) da América do Sul, com dois novos registros do Brasil. A família Polynoidae inclui um grupo de vermes escamosos que são abundante em muitos ambientes marinhos, e muitos membros estão associados com outros invertebrados. O gênero Harmothoe é um dos maiores em número de espécies entre os polinoídeos, com mais de 150 espécies descritas. Nós sumarizamos em uma lista anotada informações relativas a 23 espécies nominais de Harmothoe da América do Sul, com nomes válidos, sinônimos, e citações originais, discutimos possíveis problemas taxonômicos, e fornecemos ilustrações de espécimens da costa nordeste do Brasil. Redescrições de duas espécies baseadas em espécimens coletadas ao longo do litoral do Estado de Pernambuco, nordeste do Brasil, são incluídas. Harmothoe fuscaspinae e Harmothoe lanceocirrata são registradas pela primeira vez para águas brasileiras.
The polynoid genus Chaetacanthus Seidler, 1922 currently includes three nominal species provided with parapodial branchiae. Members of this taxon have palps with longitudinal rows of papillae, notochaetae abundant and neurochaetae spinulose. Most Chaetacanthus species were originally described as belonging to Lepidonotus Leach, 1816, and some of them were later regarded as subjective synonyms of Iphione magnifica Grube, 1876, the type species for Chaetacanthus. This species was described from the Caribbean Sea and later recorded for the tropical Eastern Pacific. After the supposed Amphi-American distribution, a revision of all available material was performed in order to clarify the generic delineation, and to improve the understanding of species systematics. Further, some non-type specimens collected in Panama allowed us to have a better understanding of the variation of elytral shape and ornamentation along the body. The type material of Polynoe brasiliensis de Quatrefages, 1866 was examined and despite its poor condition, it shows parapodial branchial filaments which were overlooked in the original description; these branchiae are also present in the holotype of I. magnifica. We identify that there are no relevant difference between both species, and they are regarded as synonyms, and Chaetacanthus brasiliensis (de Quatrefages, 1866) is newly combined and is the senior synonym. On the other hand, Chaetacanthus pilosus (Treadwell, 1937), from the Eastern Pacific, and C. pomareae (Kinberg, 1856) from the South Central Pacific are redescribed, and C. harrisae n. sp., and C. ornatus n. sp. are both newly described from the Eastern Pacific. A key to identify all species of Chaetacanthus of the World, together with an appendix for the reversal of precedence of Lepidonotus Leach, 1816 over Eumolpe Oken, 1807 are also included.
Scientific collections represent a highly relevant social legacy. They provide a source for research and production of human resources at several academic levels and play a key role for the preservation of biodiversity. The Invertebrate Collection Paulo Young (CIPY), held at the Universidade Federal da Paraíba (UFPB), contains one of the most complete collections of shallow water marine invertebrates from Northeastern Brazil. It contains about 18,000 catalogued samples, and circa 2-3 times more samples awaiting identification and registration. The samples were collected in a variety of natural and artificial marine environments (e. g., coastal reefs, mangroves, and shipwrecks). The main collection is subdivided into seven main groups (Porifera, Cnidaria, Mollusca, Annelida, Crustacea, Echinodermata, and Ascidiacea), and other smaller groups (Bryozoa, Echiura, Sipuncula, Pycnogonida, Enteropneusta, and marine Turbellaria). Using only identified and registered samples, we catalogued 285 species among the phyla Porifera (89 spp.), Cnidaria (93 spp.), and Echinodermata (103 spp.). The collection has 36 types of species (including three Porifera, one Cnidaria, and four Echinodermata). Considering its representativeness, this collection has a valuable record of Brazilian national marine diversity. Thus, the CIPY deserves to be known, recognized, and made available for study.
Scale-worms are polychaetes of the family Polynoidae that are commonly distribute in marine environments. This
study aims identify and introduce two scale-worms as Capitulatinoe cf. cupisetis and Eunoe cf. oerstedi from the western coast of
the Gulf of Thailand. Using scanning electron microscopy of adult worms, the antennae, palps, prostomium, cirri, setigers,
parapodia, saetae and elytra are described. In addition, the phylogenetic relationships of our specimens with other polychaete
species were analyzed based on partial sequences of 28S, 18S and 16S ribosomal DNA (rDNA) genes. The rDNA sequences
identified C. cf. cupisetis and E. cf. oerstedi were respectively recovered within Arctonoinae and Polynoinae in a monophyletic
Polynoidae. The congruence or incongruence of the morphological and molecular data is discussed in the text. These findings
increase the knowledge of polynoid polychaete worms in Thailand, although two scale-worms remain to be identified of the
precise species.
