Two New Species of Macrobothridium (Cestoda: Diphyllidea) from Rhinobatid Elasmobranchs in the Gulf of Gabes, Tunisia, with Notes on the Status of the Genus

2001 ◽  
Vol 87 (3) ◽  
pp. 673 ◽  
Author(s):  
Lassad Neifar ◽  
Gaines A. Tyler ◽  
Louis Euzet
2009 ◽  
Vol 54 (4) ◽  
Author(s):  
Hela Derbel ◽  
Lassad Neifar

AbstractAllopodocotyle tunisiensis sp. nov. is described from the intestine of Solea aegyptiaca Chabanaud collected from the Gulf of Gabès in the Mediterranean Sea off Tunisia. The new species belongs to the group C of Allopodocotyle Pritchard, 1966 species (sensu Bray 1987). It differs from its congeners in this group by the shape of the seminal vesicle and the anterior extend of the vitellarium which varies between just posterior to the ventral sucker and anterior margin. A key to the Allopodocotyle species of group C is presented. The status of the genera Allopodocotyle and Macvicaria (Gibson and Bray 1982) are briefly discussed.


1999 ◽  
Vol 30 (4) ◽  
pp. 459-479
Author(s):  
C.A.W. Jeekel

AbstractThe Aschistodesmini from the Solomon Island are reviewed. Besides clarifying notes on the status of the type and closely related species of Aschistodesmus, descriptive notes and illustrations of the gonopods of the Solomon species of this genus, particularly of those published by Chamberlin, 1920, under the generic name of Solomonosoma, are given. Two new species, A. spatulifer and A. tridentifer are described, and a key to the species is provided. From Rennell Island Dorcadogonus modestus gen. n., sp. n. is described.


2019 ◽  
Vol 67 (S5) ◽  
pp. S70-S80
Author(s):  
Rodolfo Elías ◽  
María Andrea Saracho-Bottero ◽  
Carol Anne Simon

Introduction: The knowledge of polychaetes in the subtropical region of Africa benefited from the activity of J. Day. However, 50 years after the publication of his Monograph of the Polychaeta of southern Africa, it is necessary to reconsider the identity of the Cirratulidae due to changes in the diagnostic characters and new approaches to the taxonomy of the group to corroborate the status of cosmopolitan species in this region. Objective: We hypothesize that biodiversity of multitentacular Cirratulidae polychaetes has been significantly underestimated in southern Africa. Methods: The present work analyzes material deposited in the Iziko museum, as well as recently collected specimens, using scanning electron microscope to identify them. Results: The material corresponds to two new species belonging to the genus Protocirrineris. Protocirrineris strandloperarum sp. nov. is characterized by having the tentacular filaments between the chaetigers 5 to 10-12 and the first pair of branchiae from chaetiger 7, and P. magalhaesi sp. nov. is characterized by having tentacular filaments between chaetigers 4-8 and the first pair of branchiae from chaetigers 2 or 3. Descriptions of these species, with light and scanning electron microscope images, are given. Schematic drawings of the two new species are shown comparatively with diagnostic characters. Conclusions: The use of new techniques enables discovery of new taxonomic characters and two new species of the genus. The diversity of Cirratulidae polychaetes is underestimated also in the subtropical and tropical regions of Africa.


2010 ◽  
Vol 84 (3) ◽  
pp. 363-401 ◽  
Author(s):  
Vladimir N. Sergeev ◽  
J. William Schopf

Carbonaceous bedded cherts of the late Neoproterozoic (Cryogenian) ∼800 to 750 Ma old Chichkan Formation of South Kazakhstan contain an abundant, diverse assemblage of exquisitely preserved microorganisms. Like many Proterozoic microbiotas, the Chichkan assemblage is dominated by prokaryotic cyanobacteria, both filamentous (oscillatorialeans and nostocaleans, represented primarily by cellular trichomes and empty sheaths) and coccoidal (chroococcaleans and pleurocapsaleans, including solitary, colonial, and stalk-forming specimens). However, unlike Proterozoic microbiotas reported from peritidal settings, the Chichkan fossils, permineralized in cherts deposited in the open shelf facies of the formation, include diverse microscopic eukaryotes: vase-shaped testate amoebae, spiny (acanthomorphic) phytoplanktonic unicells, large (up to ∼1 mm diameter) megasphaeromorphic acritarchs, and sausage-shaped vaucheriacean green alga-like filaments.Given the composition of this biota and the presence in it and similarly aged assemblages of numerous taxa typical of late Neoproterozoic deposits (e.g., Cerebrosphaera, Jacutianema, Melanocyrillium, Stictosphaeridium, Trachyhystrichosphaera, and Vandalosphaeridium), the Chichkan Lagerstätte appears representative of the Cryogenian biota as now known, thereby documenting the status of the marine biosphere at a time closely preceding the radiation of the Metazoa. As such, we interpret this and other coeval mixed assemblages of prokaryotic and eukaryotic microfossils as representing an evolutionary stage transitional between the predominantly prokaryote-dominated Precambrian and the eukaryote-dominated Phanerozoic biospheres.As reported here, the Chichkan assemblage is composed of 39 taxa (of which two forms are described informally) that are assigned to 23 genera of microscopic prokaryotes and eukaryotes and that include two new species: Polybessurus crassus n. sp. and Vandalosphaeridium koksuicum n. sp.


Zootaxa ◽  
2012 ◽  
Vol 3582 (1) ◽  
pp. 37 ◽  
Author(s):  
G. BEHOUNEK ◽  
H. L. HAN ◽  
V. S. KONONENKO

The Oriental Pantheinae genus Donda Moore, 1882 is revised. The type-species of the genus—Donda eurychlora (Walker, 1858) is recognized as a complex of species. Two new species, Donda continentalis sp. n. from Thailand, China, and Vietnam and D. sundana sp. n. from Indonesia are described. Two species, D. thoracica Moore, 1882 and D. striatovirens Moore, 1883, are excluded from the genus Donda. The status of two taxa, D. ornata Moore, 1883 and D. lichenoides (Hampson, 1894) remains open. The imagines, male and female genitalia are illustrated. The checklist of the genus Donda is presented.


Zootaxa ◽  
2020 ◽  
Vol 4742 (2) ◽  
pp. 311-331
Author(s):  
M. HIROSE ◽  
D.P. GORDON ◽  
J.-L. D’HONDT

The status of seriated Amathia species (Bryozoa: Ctenostomata) in Japan is reviewed. Several historical specimens and materials recently collected from several localities along the Japanese coast are examined in this study. Amathia acervata Lamouroux, 1824, collected from Japan by Wilhelm Gottlieb Tilesius in 1804, was examined and is redescribed from a reconstituted fragment of the sole type specimen. Material previously reported from Wakayama Prefecture is very similar to Amathia acervata, but differs in having fewer autozooid pairs per cluster, which spiral in different directions; the species is described as a new species Amathia brevisilva n. sp. Measurements of colony characters vary according to the effects of fixation, but stolon length, the ratio of autozooid clusters on stolons, spirality and pigmentation are useful characters for the identification of Japanese seriated Amathia. In addition, two new species are described, Amathia reptopinnata n. sp. and Amathia fimbria n. sp. Amathia reptopinnata n. sp. is characterized by its robust form, dark colour, dichotomous branching, long stolons, long autozooidal clusters and pinnately arranged prostrate zooids. Amathia fimbria n. sp. was found only in the Showa Emperor collection, and is characterized by its compact colony form, remarkably short internode length and trichotomous branching. 


2011 ◽  
Vol 56 (3) ◽  
Author(s):  
Hichem Kacem ◽  
Hela Derbel ◽  
Lassâd Neifar

AbstractHypocreadium caputvadum sp. nov. (Digenea, Lepocreadiidae) is described from the intestine of Balistes capriscus Gmelin collected from the Gulf of Gabès (Tunisia) in the southern Mediterranean Sea. This new species can be distinguished by a combination of characteristics shared by no other described species of Hypocreadium Ozaki, 1936. These characteristics include the presence of a distinct anterior notch, the follicular vitellarium confluent in the forebody, the presence of a muscular sphincter at the level of the anterior third of the metraterm and the size and the position of the cirrus-sac.


2018 ◽  
Vol 25 ◽  
pp. 1-79 ◽  
Author(s):  
Dora M. Banner ◽  
Albert H. Banner

We wish not only to up-date the taxonomy used by DE MAN in his 1911 study but also to add to his list of species those new records of species from Indonesia based, upon collections made subsequently by various individuals and agencies. DE MAN reported that he had 113 species and 20 varieties of these shrimp from the Siboga Expedition; of these, 54 species and varieties have been reduced to synonymy in the subsequent years. In the present study these additional species are also being so reduced:Alpheopsis hummelinki SCHMITT (= Neoalpheopsis euryone (De Man)Neoalpheopsis hiatti BANNER (= N. euryone De Man) Synalpheus jedanensis De Man (= S. iphinoe De Man) S. miscellaneus De Man ( = S. neomeris (De Man) S. physocheles Coutiere (= S. triunguiculatus (Paulson) S. sluiteri De Man (= S. paraneomeris Coutiere) S. stimpsonii var. maldivensis C outiere (= S. stimpsonii ( De Man) S. streptodactytoides De Man (=S. streptodactylus Couti>re)From the post-Siboga collections, we list an additional 28 established species from Indonesian waters as well as two new species: Alpheus nipa and Synalpheus mortenseni; we also have reviewed the status of Alpheus (= Synalpheus) tricuspidatus Heller (1861) and consider it to be a nomen dubium. We now recognize a total of 145 species from Indonesian waters plus an additional 2 species left unnamed by De Man and by us.


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