A new genus of Phyllobothriidae (Cestoda: Tetraphyllidea) in carcharhiniform sharks from Iran and Australia

2010 ◽  
Vol 85 (1) ◽  
pp. 40-50 ◽  
Author(s):  
J.N. Caira ◽  
M. Malek ◽  
T. Ruhnke
Keyword(s):  
Electron Microscopy ◽  
Persian Gulf ◽  
New Genus ◽  
Northern Australia ◽  
New Genus And Species ◽  
Species Inquirenda ◽  
Timor Sea ◽  
The Persian Gulf ◽  
Available Information ◽  
Scanning Electron

AbstractThe collection of cestodes from the carcharhiniform shark Carcharhinus cf. dussumieri in the Persian Gulf off Iran resulted in the discovery of the new genus and species of tetraphyllidean tapeworm, Doliobothrium haselii n. gen. n. sp. Collections from the carcharhiniform shark Rhizoprionodon acutus in the Timor Sea off northern Australia resulted in material that is consistent with a species originally described as Pithophorus musculosus from this host species in India, but that appears to represent a second species in the new genus. This second species is redescribed and transferred to Doliobothrium n. gen. The two species differ from one another in total length, testis number and total number of proglottids, with the latter species generally being smaller in overall size than the former species. Histological sections and scanning electron microscopy confirm that this new genus differs from all other phyllobothriid genera in the possession of bothridia that both lack apical suckers and are tubular in form, bearing proximal and distal apertures. Despite differences in scolex morphology, the proglottids of the new genus are remarkably similar to those seen in Orectolobicestus, Paraorygmatobothrium and Ruhnkecestus, all of which also parasitize sharks. These four genera also share the presence of serrate gladiate spinitriches on their proximal bothridial surfaces. This is only the second report of a cestode from an elasmobranch from the Persian Gulf. Limited available data suggest that the fauna of this region resembles that of other regions of the Indo-Pacific. Furthermore, owing to the paucity of available information and specimens, it is recommended that Pithophorus and three of its remaining described species (i.e. P. pakistanensis, P. trygoni, P. yamagutii) be considered as a genus inquirendum and species inquirenda, respectively.

Jurassic conchostracans from Carapace Nunatak, southern Victoria Land, Antarctica

1994 ◽  
Vol 6 (1) ◽  
pp. 105-113 ◽  
Author(s):  
Shen Yanbin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Middle Jurassic ◽  
New Genus ◽  
New Genus And Species ◽  
Victoria Land ◽  
Number Of Individuals ◽  
Scanning Electron

Fossiliferous horizons of the Ferrar Group at Carapace Nunatak of southern Victoria Land have yielded the richest and most diverse freshwater Jurassic biota hitherto recorded from Antarctica. Fossil conchostracans are the most important in terms of number of individuals and distributional area. Scanning electron microscopy is used to establish a new genus and species (Carapacestheria balli), and Cyzicus (Lioestheria) disgregaris Tasch is attributed to Carapacestheria disgregaris (Tasch) emend. The conchostracan fauna of the Ferrar Group, characterized by Carapacestheria, is probably of early Middle Jurassic age.

Copidothrips octarticulatus recorded from Tahiti, with first description of the male and larvae (Thysanoptera, Thripidae, Panchaetothripinae)

Zootaxa ◽  
2021 ◽  
Vol 4949 (3) ◽  
pp. 591-594
Author(s):  
ARTURO GOLDARAZENA ◽  
BRUNO MICHEL ◽  
FRED JACQ
Keyword(s):  
Host Plants ◽  
New Genus ◽  
Host Record ◽  
Pacific Island ◽  
Northern Australia ◽  
New Genus And Species ◽  
Christmas Island ◽  
The Indian Ocean ◽  
Single Genus ◽  
Unknown Male

Heliothrips (Parthenothrips) octarcticulatus was originally described by Schmutz (1913) from Sri Lanka. Subsequently, Hood (1954) described from Taiwan a new genus and species Copidothrips formosus, and then Stannard and Mitri (1962) described a further new genus and species, Mesostenothrips kraussi, from Kiribati and Gibert Islands. Bhatti (1967, 1990), recognized that only a single genus and species was involved amongst these names, established the resultant synonymies, and recorded the species octarcticulatus from various localities between the Seychelles and five different Pacific Island groups. It has also been recorded from Northern Australia, and Thailand (ThripsWiki 2021) as well as Christmas Island in the Indian Ocean (Mound 2019). Despite these records, there is little reliable information about host plants and biology apart from Piper myristicum on Pohnpei island (Micronesia), and also damage caused to the leaves of Aglaonema and Spathoglottis at Darwin in Australia (Mound & Tree 2020). In this note, we add a further interesting host record and describe the previously unknown male as well as the larvae of this species. 

Re-investigation of Polyoeca dichotoma and Acanthoeca spectabilis (Acanthoecidae: Choanoflagellida)

1984 ◽  
Vol 64 (4) ◽  
pp. 819-827 ◽  
Author(s):  
Shigemitsu Hara ◽  
Eiji Takahashif
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Type Species ◽  
New Genus ◽  
Three Dimensional ◽  
Electron Microscopical ◽  
Scanning Electron

Light and electron microscopical reinvestigation of Polyoeca dichotoma Kent revealed that Acanthoecopsis spiculifera Norris, the type species of the genus, is a synonym for Polyoeca dichotoma. Since this step invalidates the use of the name Acanthoecopsis, a new genus Acanthocorbis was established for the three species formerly included in Acanthoecopsis.The three dimensional arrangement of costal strips forming the loricae of Polyoeca dichotoma and Acanthoeca spectabilis Ellis were examined by scanning electron microscopy. The arrangement of costal strips were similar in both species. The longitudinal costal strips and those forming the spines were arranged outside the supplementary costae and those of the transverse bonds.

Stoibocephalum n. gen. (Cestoda: Lecanicephalidea) from the sharkray, Rhina ancylostoma Bloch & Schneider (Elasmobranchii: Rhinopristiformes), from northern Australia

Zootaxa ◽  
2013 ◽  
Vol 3626 (4) ◽  
pp. 558-568 ◽  
Author(s):  
JOANNA J. CIELOCHA ◽  
KIRSTEN JENSEN
Keyword(s):  
Intestinal Mucosa ◽  
New Genus ◽  
Apical Organ ◽  
Northern Australia ◽  
New Genus And Species ◽  
The Third ◽  
Histological Sections ◽  
Egg Morphology

A new genus and species of lecanicephalidean cestode, Stoibocephalum arafurense n. gen., n. sp., is described from the sharkray, Rhina ancylostoma Bloch & Schneider, off northern Australia. Stoibocephalum arafurense n. gen., n. sp. Is apolytic, and possesses a large, muscular, retractable apical organ, 3 pairs of excretory vessels, and testes in several columns and layers. The presence of 3 pairs of excretory vessels distinguishes this new genus from all other valid lecanicephalidean genera, except Hexacanalis Perrenoud, 1931, from which it can be distinguished based on ovary shape and egg morphology. Stoibocephalum n. gen. most closely resembles Tylocephalum Linton, 1890 but differs from that genus in its ability to completely retract its apical organ into the scolex proper. Scolex microthrix pattern and histological sections of scoleces attached in situ suggest S. arafurense n. gen., n. sp. to attach to the host’s intestinal mucosa with apical organ and scolex proper surfaces, rather than just the apical organ surface. This is the third lecanicephalidean species described from the sharkray.

scholarly journals New taxa and new records of Australian Panchaetothripinae (Thysanoptera, Thripidae)

Zootaxa ◽  
2009 ◽  
Vol 2292 (1) ◽  
pp. 25-33
Author(s):  
LAURENCE A. MOUND
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
New Taxa ◽  
New Genus ◽  
New Records ◽  
Northern Australia ◽  
New Genus And Species ◽  
A New Species

A new genus and species of panchaetothripine thripid, Stosicthrips szitas, apparently related to Parthenothrips dracaenae, is described from leaves of a cultivated Grevillea (Proteaceae) in central Queensland and also at Perth, Australia. In another genus, Bhattithrips, a new species B. borealis is described from northern Australia, and the four members of this Australian genus are distinguished in a key. A species described from Southeast Asia, Astrothrips aureolus, is established and probably native to northern Australia, where it damages the leaves of an Hymenocallis cultivar (Amaryllidaceae).

New subfamilies and a new genus and species of Melithaeidae (Coelenterata: Octocorallia: Alcyonacea) with comparative data on the structure of both melithaeid and subergorgiid axes

Zootaxa ◽  
2006 ◽  
Vol 1199 (1) ◽  
pp. 19-47 ◽  
Author(s):  
PHILIP ALDERSLADE
Keyword(s):  
New Species ◽  
Electron Micrographs ◽  
New Genus ◽  
Comparative Data ◽  
Scanning Electron Micrographs ◽  
New Genus And Species ◽  
The Family ◽  
Scanning Electron

Asperaxis karenae, a new genus and new species of the gorgonian family Melithaeidae, is described. The coenenchymal sclerites of the new genus bear similarities to those of Acabaria, but the axis is quite different from that which is characteristic of the family. The axial sclerites are rods and sticks, often sinuous and branched, with simple, sparse, tubercles. The internodes may be whole or partial, and are not clearly delimited from the internodes. A new subfamily, Asperaxinae, is proposed to accommodate any taxa with the new axial characters, and the Melithaeinae for the existing nominal taxa. The structure of both axial forms and the subergorgiid axis are illustrated with scanning electron micrographs.

Molecular and morphological studies identify a new genus within the Heterolepismatinae (Zygentoma: Lepismatidae)

Zootaxa ◽  
2021 ◽  
Vol 5030 (1) ◽  
pp. 1-118
Author(s):  
GRAEME B. SMITH ◽  
ANDREW MITCHELL ◽  
RAFAEL MOLERO-BALTANÁS
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Anterior Margin ◽  
New Genus ◽  
Sequence Data ◽  
Morphological Characters ◽  
Type Series ◽  
Morphological Studies ◽  
Molecular Studies ◽  
Scanning Electron

Molecular studies using COI and 28S sequence data strongly identify a clade within the Heterolepismatinae distinct from the majority of species so far sequenced. The independence of the clade is supported by several morphological characters including a glabrous anterior margin to the frons, large trapezoidal thoracic sternites, tarsal trichobothria, long, conical parameres which in some species consist of two segments, and the presence of triangular or rounded subrectangular scales on the femora, tibia and clypeus. This clade is described as a new genus Visma n. gen. containing ten new species V. advenum n. sp., V. bingara n. sp., V. brayi n. sp., V. bundjalung n. sp., V. brigalowsum n. sp., V. capricornia n. sp., V. pallidum n. sp., V. powellheueri n. sp., V. tenebrosum n. sp. and V. xanthorrhoea n. sp.. Heterolepisma stilivarians Silvestri, 1908 is redescribed from the holotype and transferred to the new genus. The remaining H. stilivarians type series is found to be different to the holotype and removed from the type series. It is considered possible that H. annectens Silvestri, 1924 may also belong to this genus. Scanning electron microscopy of scale shape and rib-spacing is shown to be a useful tool to separate at least some species of the genus and considered to have greater potential if well preserved material is available.  

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