Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa)from Tristan da Cunha, south Atlantic

Zootaxa ◽  
2010 ◽  
Vol 2336 (1) ◽  
pp. 1 ◽  
Author(s):  
HORIA R. GALEA

A pilot survey of the shallow-water, thecate hydroid fauna of Tristan da Cunha archipelago, was undertaken for the first time. The examination of the collected material revealed the presence of at least sixteen hydroids, of which three could not be identified to species level in the absence of fertile specimens. Two sympatric morphotypes, provisionally assigned to Halecium delicatulum Coughtrey, 1876, are described, along with a discussion on the astonishingly wide morphological variation attributed to this taxon. All the present species are illustrated, and some of them are either described or accompanied by brief remarks. Only twelve hydroids were previously reported from the study area and the present report adds eleven new records to the list of known species, bringing their number to twenty-three.

2015 ◽  
Vol 8 ◽  
Author(s):  
Horia R. Galea

The present report provides the first account of the shallow water hydroids of St. Helena, which comprises 17 species, and adds nine new records to the hydrozoan fauna of the Tristan da Cunha group of islands, raising their number to 34. A total of 34 species, belonging to five families of Anthoathecata and eight families of Thecata, are discussed herein. Although distributional data are given for each species, brief diagnoses are provided for the lesser known or unidentifiable species, and the common taxa are occasionally accompanied by succinct remarks. Illustrations are provided for nearly all species in order to justify their identification and to facilitate identification by others.Fiordlandia protectaandFilellum bouvetensis,both from Gough Island, represent the second world records and extend their known area of distribution.


Zootaxa ◽  
2021 ◽  
Vol 5048 (4) ◽  
pp. 486-510
Author(s):  
ALEXANDER L. MONASTYRSKII ◽  
VU VAN LIEN

A new species and eight new subspecies of Papilionoidea discovered in Vietnam between 2002 and 2020 are described and illustrated. The status of two taxa are revised. New taxa include Pieridae: Delias sanaca bidoupa Monastyrskii & Vu subspec. nov. and Talbotia naganum aurelia Monastyrskii & Vu subspec. nov.; Nymphalidae: Abrota ganga pulcheria Monastyrskii & Vu, subspec. nov.; Bassarona recta consonensis Monastyrskii & Vu, subspec. nov.; Pantoporia bieti aurantina Monastyrskii & To subspec. nov.; Ragadia latifasciata cristata Monastyrskii & Vu, subspec. nov.; Ragadia latifasciata crystallina Monastyrskii & Vu, subspec. nov.; Faunis indistincta luctus Monastyrskii & Vu subspec. nov. & Aemona gialaica Monastyrskii, K. Saito & Vu, spec. nov. The taxon infuscata Devyatkin & Monastyrskii, previously described as the subspecies Aemona tonkinensis infuscata, was elevated to the species level, while the taxon critias (Ragadia critias Riley & Godfrey) was reduced to a subspecies. Three Satyrinae species were recorded from Vietnam for the first time: Palaeonympha opalina Butler, 1871; Ypthima motschulskyi Bremer & Grey, 1853; and Ragadia latifasciata Leech, 1891.  


Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 2000 ◽  
Author(s):  
Luiz Gustavo de Almeida Pedroso ◽  
Fabio Akashi Hernandes

We present the results of our investigation of feather mites (Astigmata) associated with non-passerine birds in Brazil. The studied birds were obtained from roadkills, airport accidents, and from capitivity. Most ectoparasites were collected from bird specimens by washing. A total of 51 non-passerine species from 20 families and 15 orders were examined. Of them, 24 species were assessed for feather mites for the first time. In addition, 10 host associations are recorded for the first time in Brazil. A total of 101 feather mite species were recorded, with 26 of them identified to the species level and 75 likely representing undescribed species; among the latter samples, five probably represent new genera. These records allowed the first inference about the host and mite association of many species, as well as the first discussion about the geographical distribution of some feather mite taxa along the host distribution.


Zootaxa ◽  
2008 ◽  
Vol 1849 (1) ◽  
pp. 1 ◽  
Author(s):  
TOM J. ARTOIS ◽  
BART S. TESSENS

An overview of the Polycystididae from the Indian Ocean is presented, including the description of twelve new species. The taxonomical position of each of these species is discussed. Austrorhynchus kerguelensis n. sp., Paraustrorhynchus neleae n. sp., Paulodora ancora n. sp., P. contortoides n. sp., P. drepanophora n. sp., P. hamifer n. sp., P. porcellus n. sp., P. schockaerti n. sp., P. watsoni n. sp., Phonorhynchoides linguatus n. sp. and Polycystis elsae n. sp. can all be distinguished from their congeners on characteristics of the construction of the hard parts of the male system. The older records of Paulodora contorta (Schockaert & Karling, 1975) Artois & Schockaert, 1998 by Schockaert (1982) and Jouk & De Vocht (1989) are re-evaluated and the material is recognised as Paulodora drepanophora n. sp.. The subspecies P. felis asymmetrica Artois & Schockaert, 2001 is raised to the species level. Annalisella bermudensis Karling, 1978, Paraustrorhynchus elixus (Marcus, 1954) Karling & Schockaert, 1977 and Phonorhynchoides haegheni Artois & Schockaert, 2001 are recorded for the first time in the Indian Ocean. The new material of these species is discussed and compared with older descriptions. For Alcha evelinae Marcus, 1949, Cincturorhynchus karlingi Schockaert, 1982, Djeziraia pardii Schockaert, 1971 Gyratrix hermaphroditus Ehrenberg, 1831, Paulodora subcontorta (Schockaert, 1982) Artois & Schockaert, 1998 and Polycystis ali Schockaert, 1982 new localities are given, and newly collected material is discussed. The discussion of P. ali leads to the split of the species into P. ali Schockaert, 1982 from the African East Coast and Galapagos and P. californica n. sp. from California. For some of the species, new records outside the Indian Ocean are also mentioned.


Zootaxa ◽  
2010 ◽  
Vol 2667 (1) ◽  
pp. 43
Author(s):  
ESTEVAM L. CRUZ DA SILVA ◽  
ARNO A. LISE

The male of Paratrechalea longigaster Carico, 2005 and the female of P. julyae Silva & Lise, 2006 are described and illustrated for the first time, and new records provided. Photomicrographs of the female genitalia showing accessory spermathecae for P. ornata (Mello-Leitão, 1943) and P. azul Carico, 2005 as well as the morphological variation of the epigynum in both species are also presented. A previously unreported feature of the male palpus common to both P. azul Carico, 2005 and P. ornata (Mello-Leitão, 1943) is also discussed.


Zootaxa ◽  
2020 ◽  
Vol 4830 (2) ◽  
pp. 201-246
Author(s):  
DALE R. CALDER

This report is based on a small collection of hydroids from the Hawaiian Islands, in the central Pacific Ocean. Most of the examined material was obtained by staff of the Bernice Pauahi Bishop Museum, Honolulu, during surveys for nonindigenous marine species in shallow, sheltered, inshore or nearshore waters, and especially in harbours, bays, and lagoons. In all, 34 species of leptothecate hydroids, assigned to 14 families and 20 genera, were identified and are discussed. One of them, based on a single infertile colony with a damaged hydrotheca, was identified provisionally only to the rank of suborder. Given the limited geographic and bathymetric focus of the surveys, only four of the species, Clytia thornelyi, Halecium sibogae, Macrorhynchia balei, and M. hawaiensis, were collected at depths greater than 25 m. Seven species, Cirrholovenia tetranema Kramp, 1959, Orthopyxis crenata (Hartlaub, 1901), Clytia elongata Marktanner-Turneretscher, 1890, C. paulensis (Vanhöffen, 1910), Tridentata maldivensis (Borradaile, 1905), Monotheca flexuosa (Bale, 1894), and a hydroid identified only as Eirenida (undetermined), are recorded from Hawaii for the first time. Three others, Lytocarpia nigra (Nutting, 1905) Macrorhynchia balei (Nutting, 1905), and M. hawaiensis (Nutting, 1905), have their type localities in Hawaii, with the last of these being known to date only from the Hawaiian archipelago. Most of the species are well-known from shallow water areas across the tropical and subtropical Indo-Pacific region, and over half of them have been reported as well from warm waters in the Atlantic Ocean. Their existence in the remote islands of Hawaii is attributed to long-range dispersal by both natural and human-mediated means, including shipping. 


2019 ◽  
Vol 99 (06) ◽  
pp. 1325-1342 ◽  
Author(s):  
Karin Richter ◽  
Kai Horst George

AbstractDuring the expedition POS397 ‘GroMet’ in 2010 the sediments of the Great Meteor Seamount (GMS) plateau were sampled quantitatively for the first time, allowing statistical analysis of the community structure of Harpacticoida and Canuelloida. Analysis of similarity revealed no differences between three geographic regions at family/species level. Analysis of diversity indicated slightly greater diversity in the south, with more species belonging to more genera/families. Dispersal opportunities possibly occurring at the plateau (emergence, erosion, rafting) are discussed. Of 18 investigated families 106 species were identified, but only 5.66% were already scientifically known and widely distributed. Within the investigated families, 37.74% of the species belonged to shallow-water genera, leading to the conclusion that the plateau was once connected to shallow-water habitats, perhaps functioning as a stepping stone, but is now geographically isolated. This isolation is most likely due to seafloor spreading of the Atlantic Ocean and descending of the GMS. On the plateau, six species with wider distribution ranges were present, indicating that species may arrive accidentally, but their means of settlement remains unknown. Comparisons of the identified GMS plateau fauna with that of other seamounts and mid-oceanic islands revealed similar communities at family level, but at species level the GMS shares only one species with the Seine Seamount; all other elevations had more species in common. Hence, the GMS plateau is considered to be isolated regarding benthic Copepoda but may play an important role in meiofaunal species distribution, as it represents a shallow-water habitat within the deep sea.


Zootaxa ◽  
2010 ◽  
Vol 2570 (1) ◽  
pp. 1 ◽  
Author(s):  
HORIA R. GALEA

This report supplements an earlier account on the hydroids of the Guadeloupe archipelago, and records 31 additional species of thecates. Among them, Halecium calderi sp. nov., Antennella armata sp. nov., and Antennella incerta sp. nov., are described. Laomedea tottoni Leloup, 1935 is redescribed and reassigned to the genus Clytia Lamouroux, 1812. Its synonymy is broadened upon inclusion of Clytia laxa Fraser, 1937. Hebella venusta (Allman, 1877) is considered valid based on comparison with related species, and its gonotheca is described for the first time. Two sympatric varieties of Sertularella diaphana (Allman, 1885), easily separable morphologically and by their cnidome composition, are discussed. Sertularella ornata Fraser, 1937 is recorded for the second time and is fully redescribed. Its name is actually a junior synonym of S. fusiformis (Hincks, 1861) f. ornata Broch, 1933, and it is here referred to as S. fraseri nom. nov. Sertularia thecocarpa Jarvis, 1922, Sertularella minuscula Billard, 1924, Sertularella parvula Mammen, 1965, and Sertularia stechowi Hirohito, 1995 are placed in the synonymy of Sertularella tongensis Stechow, 1919, the latter being transferred to the genus Sertularia Linnaeus, 1758. Sertularia ephemera nom. nov. is proposed as a replacement name for Sertularia tongensis Stechow, 1919. Aglaophenia postdentata Billard, 1913 is confidently recorded from the Atlantic for the first time. Dentitheca dendritica (Nutting, 1900) is redescribed, and additional notes on Macrorhynchia clarkei (Nutting, 1900) are provided. All the species discussed herein are new records for the study area. Illustrations are given for each species and data on the nematocyst complement and size of capsules are given when necessary. The number of hydroid species reported from the study area is raised to more than eighty. Hydroids of the Caribbean are moderately well known faunistically, though continuous discovery of new species is likely, the species composition being certainly richer than currently reported.


Check List ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 2040 ◽  
Author(s):  
Leonardo S. Carvalho ◽  
Pedro H. Martins ◽  
Marielle C. Schneider ◽  
Jimmy J. Cabra-García

The Brazilian spider fauna comprises thousands of described species, mostly known by only one or two records, and there are large sampling gaps. The spider fauna of the state of Roraima is enigmatic in Brazil and remains largely unknown. Herein, we present a list of spider species recently collected during an expedition in Roraima. Species-level identifications were possible for 229 adult individuals of 54 species. Five species are newly recorded from Brazil, and 30 species are presented for the first time from Roraima. Most of these new records are represented by widespread species, representing the huge and historical deficiency in the spider sampling throughout Roraima.


1995 ◽  
Vol 9 (1) ◽  
pp. 149
Author(s):  
J Froman

Sixteen species of Haplosclerida and Petrosida are described from the reefs and lagoon of New Caledonia. Five species are new and two species are reported for the first time from New Caledonia. Nine previously described species were also found in this study and extra characters are reported, or additional locality and habitat records provided. The new species belong to the Haplosclerida : Chalinidae, three species; Niphatidae, one species; and Callyspongiidae, one species. New records of Xestospongia bergquistia and X. exigua (Petrosida : Petrosidae) are reported. Some of the species described have reduced spiculation; this reduction in amount of silica in the skeleton, and increased fibre development, may be related to water temperature. The proportion of endemic species within the Haplosclerida and Petrosida shallow water fauna is 48% and 75% in deep water. Non-endemic species have closest affinities to the Australian fauna.


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