Fine-Structural Observations on some Marine Choanoflagellates from the Coast of Norway

1972 ◽  
Vol 52 (1) ◽  
pp. 67-79 ◽  
Author(s):  
B. S. C. Leadbeater
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
New Species ◽  
The Other ◽  
External Morphology ◽  
Distinguishing Features ◽  
One New Species ◽  
Whole Mounts

The external morphology of eight species of Choanoflagellates representing eight genera have been investigated with an electron microscope. These include one new species (Acanthoecopsis apoda). Sections have been obtained of Monosiga ovata, a species without a lorica. All the other species possess loricas with very regular and precise distinguishing features when seen in shadowcast whole mounts. The position of the group is discussed in a preliminary way in the light of fine structure.

Review of the leafhopper genus Hatigoria Distant with one new species (Hemiptera: Cicadellidae: Hylicinae)

Zootaxa ◽  
2021 ◽  
Vol 5005 (3) ◽  
pp. 358-366
Author(s):  
JIU TANG ◽  
YALIN ZHANG
Keyword(s):  
New Species ◽  
Morphological Study ◽  
First Record ◽  
External Morphology ◽  
Adult Males ◽  
First Time ◽  
One New Species

The taxonomy of the hylicine genus Hatigoria Distant is reviewed based on morphological study of the types and other specimens. The male external morphology and genitalia of two known species, H. praeiens Distant, 1908 and H. sauteri Jacobi, 1914, are described and photographed for the first time. A description and figures of the female ovipositor of H. praeiens Distant, 1908 are provided. One new species, H. longistylia n. sp., from Laos and China is reported with descriptions and figures. This also represents the first record of the genus Hatigoria from Laos. A key to adult males of all species is provided.

A new species of Tabularia (Kützing) Williams & Round from Poyang Lake, Jiangxi Province, China, with a cladistic analysis of the genus and their relatives

Phytotaxa ◽  
2018 ◽  
Vol 373 (3) ◽  
pp. 169 ◽  
Author(s):  
YUE CAO ◽  
PAN YU ◽  
QINGMIN YOU ◽  
REX L. LOWE ◽  
DAVID M. WILLIAMS ◽  
...  
Keyword(s):  
Electron Microscope ◽  
New Species ◽  
Scanning Electron Microscope ◽  
Poyang Lake ◽  
Cladistic Analysis ◽  
The Other ◽  
Jiangxi Province ◽  
A New Species ◽  
Scanning Electron

A new species of Tabularia, Tabularia sinensis, is described from the inland Poyang Lake (Jiangxi Province), the largest lake in China. The description is based on light and scanning electron microscope observations of valve and girdle elements. Given the diversity of forms in the genus, the relationships and status of the genus was investigated in the context of the other known species in the genus and to ascertain if Tabularia, as originally circumscribed, remains monophyletic.

On the taxonomy of the genus Thyridanthrax Osten Sacken in Egypt and the Kingdom of Saudi Arabia, with description of a new species (Diptera: Bombyliidae)

Zootaxa ◽  
2019 ◽  
Vol 4701 (6) ◽  
pp. 501-519 ◽  
Author(s):  
MAGDI S. EL-HAWAGRY ◽  
MAHMOUD S. ABDEL-DAYEM ◽  
HATHAL M. AL DHAFER
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
Field Trips ◽  
The Other ◽  
Wing Morphology ◽  
Key To Species ◽  
Kingdom Of Saudi Arabia ◽  
Rigorous Study ◽  
One New Species ◽  
A New Species

Egyptian and Saudi Arabian Thyridanthrax spp. collected in field trips or preserved in the Efflatoun’s insect collection in Cairo University were taxonomically studied. One new species, T. elegansoides sp. nov., is herein described, and two species, T. decipulus (Austen) and T. polyphemus (Wiedemann), are newly recorded from Egypt. Ten species are treated: one species from the Kingdom of Saudi Arabia, T. anomalus Greathead; two species from Egypt and the Kingdom of Saudi Arabia, T. decipulus (Austen) and T. perspicillaris (Loew); and seven species from Egypt: T. elegans (Wiedemann), T. elegansoides sp. nov., T. griseolus (Klug), T. incanus (Klug), T. lotus (Loew), T. obliteratus (Loew), and T. polyphemus (Wiedemann). Taxonomic comments, an identification key to species, diagnoses, and photographs of some species and genitalia are provided. Based on wing morphology and male genitalic characters, T. lotus clearly does not fit in the genus Thyridanthrax, and may need to be placed elsewhere, nevertheless it is not clear whether it can be included in any of the other currently recognized genera in the tribe Villini. It is here kept in Thyridanthrax until a more rigorous study can be conducted to better ascertain its position in the Villini. 

Compound sensilla in monogenean skin parasites

Parasitology ◽  
1969 ◽  
Vol 59 (3) ◽  
pp. 625-636 ◽  
Author(s):  
Kathleen M. Lyons
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Phase Contrast ◽  
The Other ◽  
Phase Contrast Microscopy ◽  
Sense Organs ◽  
Dense Membrane ◽  
Contrast Microscopy ◽  
Membrane Bound

The fine structure of two kinds of compound presumed sense organs from the heads of three skin parasitic monogeneans Gyrodactylus sp. Entobdella soleae (larva only) and Acanthocotyle elegans is described. One kind of compound receptor consists of a number of associated sensilla, each ending in a single cilium (the spike sensilla of Gyrodactylus and the cone sensilla of E. soleae oncomiracidium).The other kind of compound organ is made up of one or a few neurones only, each of which bears many cilia (pit organs of E. soleae oncomiracidium and feeding organ sensilla of Acanthocotyle elegans). The spike sensilla of Gyrodactylus have also been studied using a Cambridge Instrument Co. Stereoscan electron microscope and by phase-contrast microscopy. The ciliary endings of all these sense organs are highly modified and have lost the 9 + 2 structure, being packed with many fibres. The fibre arrangement in the cilia of the cone sensillae of E. soleae oncomiracidium and the feeding organ sensilla of A. elegans has been compared with that in the ciliary endings of other invertebrate mechano- and chemoreceptors. The possibility that the spike sensilla of Gyrodactylus may be chemoreceptors has been discussed but it is considered premature to attempt to assign functions to the other sense organs studied. Electron dense membrane-bound inclusions occurring specifically in the nerves supplying the spike sensilla of Gyrodactylus may be neurosecretory.

Two new Auletta Schmidt, 1870 (Axinellidae; Demospongiae; Porifera) from Brazil

Zootaxa ◽  
2017 ◽  
Vol 4273 (1) ◽  
pp. 121
Author(s):  
THAYNÃ CAVALCANTI ◽  
RADHARANNE RECINOS ◽  
ULISSES PINHEIRO
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
The Other ◽  
External Morphology ◽  
Northeastern Brazil ◽  
Valid Species ◽  
Brazilian Coast ◽  
Tubular Shape ◽  
Cavernous Body

The genus Auletta Schmidt, 1970 comprises 14 valid species, with six known from the Atlantic Ocean. The genus was previously recorded for the Brazilian coast only in 1967 from surveys in Pernambuco State. The present paper describes two new Auletta from Northeastern Brazil. Auletta akaroa sp. nov. is from Alagoas State and it has a stalked tubular shape and small sinuous styles and strongyles. Auletta laboreli sp. nov. was found in Pernambuco State and it is a sponge with a cylindrical and cavernous body composed of styles with blunt and telescopic tips and sinuous strongyles. Both new species were compared with the other valid species of Auletta. The spicule complement and external morphology of the new species are discussed. 

The ‘xenosmatoid’ group of Cortinarius (Agaricales) in New Zealand

Phytotaxa ◽  
2020 ◽  
Vol 438 (4) ◽  
pp. 223-236
Author(s):  
BÁLINT DIMA ◽  
KARL SOOP
Keyword(s):  
New Species ◽  
New Zealand ◽  
Bayesian Inference ◽  
Type Species ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
The Other ◽  
Morphological Data ◽  
Nrdna Its ◽  
One New Species

Cortinarius section Xenosmatae, originally based on solely morphological characters, was subsequently shown to contain phylogenetically distantly related species. The type species C. xenosma is a singleton, and this study aims to revise the other members of the section using combined molecular (nrDNA ITS and LSU) and morphological data. Based on phylogenetic analyses using RAxML, PhyML and Bayesian Inference and additional morphological features one new species (C. paraxenosma) and one new section (sect. Olorinati) are proposed. Furthermore sect. Carbonelli is extended and emended to include two former members of sect. Xenosmatae. A key to the species in New Zealand with xenosmatoid morphology is provided.

scholarly journals On the anatomy of the pedunculate barnacle Lithotrya

1947 ◽  
Vol 233 (595) ◽  
pp. 89-136 ◽  
Keyword(s):  
New Species ◽  
Great Barrier Reef ◽  
Single Species ◽  
The Other ◽  
Barrier Reef ◽  
Considerable Length ◽  
Detailed List ◽  
Doubtful Species ◽  
One New Species

The genus Lithotrya G. B. Sowerby, 1822, comprises a group of pedunculate barnacles that have developed a rock- or shell-boring habit. Darwin dealt at considerable length with the genus in his Ray Society monograph in 1851, and since then only one new species has been described— L. pacifica Borradaile, 1900. In 1926, however, Seymour Sewell showed that, apart from one doubtful species, L. rhodiopus (Gray), all the others could be divided into two groups. One group of five, he suggested, constituted, in fact, a single species, L. dorsalis (Ellis). The other group of two I dealt with systematically in my report on the Great Barrier Reef Expedition collection (Cannon 1935) and came to the conclusion that they also represented a single species, L. valentiana (Gray). The material on which this paper is based consists mainly of a few specimens of L. valentiana , collected and fixed in Bouin, which were very kindly given to me by Professor C. M. Yonge. I have also to thank Dr L. A. Borradaile for specimens of L. dorsalis collected by him in the Maldive Islands in 1900, and the Discovery Committee for specimens of various barnacles which I have used for comparison. In addition, I still have the official collection of the Great Barrier Reef Expedition, and a few of these have now been sectioned. I have been careful, however, not to section critical specimens of my detailed list (Cannon !935, p. 5, table 1).

scholarly journals Recent discoveries of new Elephantomyia (Diptera, Limoniidae) fossils in Baltic amber

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Iwona Kania-Kłosok ◽  
Wiesław Krzemiński
Keyword(s):  
New Species ◽  
The Other ◽  
Baltic Amber ◽  
Morphological Pattern ◽  
Fossil Species ◽  
New Subgenus ◽  
Taxonomic Decision ◽  
D Cell ◽  
One New Species ◽  
Specific Food

AbstractNew data on the genus Elephantomyia (Diptera: Limoniidae) from Baltic amber are presented. A new subgenus Hoffeinsonia subgen. nov. is established with one new species: Elephantomyia (Hoffeinsonia) prima sp. nov. The new subgenus is characterized by a wing at most 2.5 × as long as it is wide without a darker pattern along the veins Sc and R1, elongate Sc, straight vein R1, sharp half of vein R2+3+4 sharply arched to the upper edge of the wing, short, wide, trapezoidal d-cell and oval pterostigma. The fossil subgenus Hoffeinsonia subgen. nov. shares features with the extant subgenera Elephantomyodes and Elephantomyia. One other extinct species of Elephantomyia was discovered and described herein as E. (s. str.) christelae sp. nov. Such features as a very elongate vein R2+3+4, 2.5 × as long as the Rs easily allowing this new species to be distinguished from the other fossil representatives of the genus Elephantomyia. The taxonomic decision on Elephantomyia grata as a species placed in nominative subgenus is provided. A list and key of fossil species of Elephantomyia are given. The morphological pattern of the genus is discussed in relation to the adaptation to a specific food spectrum, coevolution with Angiospermae of the representative genus Helius known since Cretaceous and closely related to this genus representatives of the much younger genus Elephantomyia.

scholarly journals Revision of the South American genus Gaujonia Dognin (Noctuidae, Pantheinae) with descriptions of five new genera and twenty-one new species

ZooKeys ◽  
2020 ◽  
Vol 985 ◽  
pp. 71-126
Author(s):  
Jose I. Martinez
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Characters ◽  
The Other ◽  
South American ◽  
New Combinations ◽  
New Genera ◽  
The South ◽  
Molecular Analyses ◽  
One New Species

The endemic Neotropical genus Gaujonia Dognin is revised. Morphological characters and a phylogenetic analysis demonstrate paraphyletic relationships among the species. Four different groups are interpreted to represent four different genera. The G. arbosi group is the only remaining clade in the genus Gaujonia, and the other groups have been arranged into three new genera: Milleranagen. nov., Oculicattusgen. nov., and Cicadoformagen. nov. Additionally, two other genera Cicadomorphusgen. nov., and Gaujopteragen. nov. were found using morphological and molecular analyses based on some specimens that were misidentified as Gaujonia spp. A total of five new genera, three new combinations (Cicadoforma vau-nigrum Hampson, comb. nov., Oculicattus renifera Hampson, comb. nov., and Millerana arbosioides Dognin, comb. nov.) and 21 new species (Cicadoforma ocelotussp. nov., Cicadomorphus chicharrasp. nov., Cicadomorphus chuyasp. nov., Cicadomorphus falkasiskasp. nov., Cicadomorphus lilianaesp. nov., Gaujonia bichusp. nov., Gaujonia chiqyaqsp. nov., Gaujonia kanakusikasp. nov., Gaujonia sourakovisp. nov., Gaujoptera amsasp. nov., Millerana austinisp. nov., Millerana cajassp. nov., Millerana cundinamarquensissp. nov., Millerana matthewsaesp. nov., Millerana tigrinasp. nov., Oculicattus bolivianasp. nov., Oculicattus brehmisp. nov., Oculicattus incasp. nov., Oculicattus raizaesp. nov., Oculicattus schmidtisp. nov., and Oculicattus uturunkusp. nov.) are established.

scholarly journals Three new species of bristletails of the families Meinertellidae and Machilidae (Archaeognatha) from Ukraine and Southern Russia

2020 ◽  
pp. 463-474
Author(s):  
Vladimir Kaplin ◽  
Vladimir Martynov
Keyword(s):  
New Species ◽  
The Other ◽  
Maxillary Palpus ◽  
Compound Eyes ◽  
Posterior Angle ◽  
Two New Species ◽  
Southern Russia ◽  
Three New Species ◽  
One New Species

Two new species of Machilinus Silvestri, 1905 (M. petrophilus Kaplin, sp. nov., M. obscurus Kaplin, sp. nov.) from Ukraine and one new species of Charimachilis Wygodzinsky, 1939 (C. rostoviensis Kaplin sp. nov.) from Southern Russia are described. The new species of Machilinus belong to the subgenus Machilinus s. str. with 1 + 1 eversible vesicles on urocoxites II–VII, and urostyli with apical spines; to the group “rupestris” with 2nd and 3rd articles of male maxillary palpus without ventral spines (M. obscurus sp. nov.), and with spines on these articles (M. petrophilus sp. nov.). Machilinus petrophilus sp. nov. differs from M. rocai Bach, 1975 in the color and ratio of length to width of compound eyes, the presence of numerous short chaetae on the clypeus, the structure of the lateral apophysis on the 2nd article of the male maxillary palpus, and the number of ventral spines on the legs. Machilinus obscurus sp. nov. differs from the other species of the group “rupestris” in the color of compound eyes, the presence of numerous short chaetae on the male frons and clypeus, and in other features. Charimachilis rostoviensis sp. nov. (Machilidae) most closely resembles C. ukrainensis Stach, 1958. Charimachilis rostoviensis sp. nov. differs from C. ukrainensis in the shape of posterior angle of urosternites, and ratios of lengths of urostyli and urocoxites.

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