Two new brackish-water species of Pogaina (Rhabdocoela: Provorticidae) from China

Two new species of the genus Pogaina Marcus, 1954 (Provorticidae), namely Pogaina sinensis n. sp. and Pogaina shenzhenensis n. sp. are described from brackish water in the intertidal zone of Shenzhen Bay. For P. sinensis n. sp., the tubular stylet is slightly curved at the distal end and a fusiform structure with a flange is present at 66% of the stylet. The flange encircles the stylet, with its ends attached to the midpoint and the distal end of the stylet. For P. shenzhenensis n. sp., the stylet has a N-shaped overall morphology. A band provided with dense needle-like structures is present at the distal end of the stylet. Both the morphological (stylet) and phylogenetic (18S rDNA and 28S rDNA) analyses support the establishment of these two new species.

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A review of the marine and brackish-water species of Testudinella (Rotifera: Monogononta, Testudinellidae), with the description of two new species

Zootaxa ◽

10.11646/zootaxa.2092.1.1 ◽

2009 ◽

Vol 2092 (1) ◽

pp. 1-20 ◽

Cited By ~ 2

Author(s):

WILLEM H. DE SMET

Keyword(s):

New Species ◽

Brackish Water ◽

Anterior Margin ◽

The Other ◽

External Morphology ◽

Ventral Margin ◽

Two New Species ◽

The Mediterranean ◽

Brackish Water Species ◽

Water Species

Two new morphospecies of the rotifer genus Testudinella (Rotifera, Monogononta, Testudinellidae), T. bicorniculata sp. nov. and T. elongata sp. nov., are described from marine psammon collected in the Mediterranean. T. bicorniculata sp. nov. is characterized by two antero-lateral lorica projections; dorsal and ventral anterior margins undulate with shallow median sinus; foot opening sub-terminal, inverted U-shaped; distal foot pseudosegment short; fulcrum with proximal opening. T. elongata sp. nov. is characterized by its strongly elongate and striate lorica; dorsal anterior margin tri-lobed; ventral margin projecting, almost straight; foot opening sub-terminal, inverted U-shaped; distal foot pseudosegment long; fulcrum with proximal opening. The new species are related to T. obscura Althaus, 1957, which is redescribed. Brief descriptions of the external morphology and trophi, as well as biogeographical information are provided for the other Testudinella species reported from marine and brackish environments. T. pseudoclypeata Bērziņš, 1943 is synonymized with T. elliptica (Ehrenberg, 1834).

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Two new brackish-water species of Macrostomum (Platyhelminthes, Macrostomida) from mangrove wetland in southern China

Zootaxa ◽

10.11646/zootaxa.4276.1.5 ◽

2017 ◽

Vol 4276 (1) ◽

pp. 107

Author(s):

LEI WANG ◽

FAN XIN ◽

CHU-YU FANG ◽

YU ZHANG ◽

AN-TAI WANG

Keyword(s):

New Species ◽

Brackish Water ◽

Southern China ◽

Phylogenetic Analyses ◽

Wall Thickening ◽

Artificial Lake ◽

Mangrove Wetland ◽

Two New Species ◽

Brackish Water Species ◽

Water Species

In this paper, two new brackish-water species of Macrostomum (M. shenzhenensis n. sp. and M qiaochengensis n. sp.) collected from the artificial lake in Overseas Chinese Town mangrove wetland, are described based on the morphology of the penis stylet and on a molecular phylogenetic analysis. M. shenzhenensis n. sp. has an elongate, narrow stylet with torus-shaped distal wall thickening, while M. qiaochengensis n. sp. has a hook-like stylet with a pointed end. Both the 18S and 28S rDNA phylogenetic analyses of M shenzhenensis n. sp. and M qiaochengensis n. sp. support the establishments of these two new species. Finally, categorization of these two new species based on the morphology of sperm and penis stylet, as well as other morphological features of the reproductive system is briefly discussed.

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Two new species of Kalyptorhynchia (Koinocystididae and Gnathorhynchidae) from China

Zootaxa ◽

10.11646/zootaxa.4337.4.8 ◽

2017 ◽

Vol 4337 (4) ◽

pp. 573

Author(s):

YI-TAO LIN ◽

WEI-TAO FENG ◽

JIE-YI ZHUANG ◽

YU ZHANG ◽

AN-TAI WANG

Keyword(s):

New Species ◽

Brackish Water ◽

18S Rdna ◽

Anterior Part ◽

28S Rdna ◽

Proboscis Hook ◽

Dead End ◽

Two New Species

Two new species of Kalyptorhynchia (Rhabdocoela), namely Itaipusa sinensis n. sp. (Koinocystididae) and Prognathorhynchus sinensis n. sp. (Gnathorhynchidae) were described from brackish water near Shenzhen Bay, representing the first records of Koinocystididae and Gnathorhynchidae in China. For I. sinensis n. sp., the U-shaped cirrus contains 50 triangular lamellar spines, with two cuticular (pseudocuticular) hooks situated at both sides of its anterior part. The hook I (right side) is funnel-shaped, while the hook II (left side) is triangular lamellar in shape. For P. sinensis n. sp., the proboscis hook has two hooks situated in an anterior to posterior sequence. The semicircular tubular stylet has a hollow spherical dead end posteriorly to the distal opening. Both the morphological and phylogenetic (18S rDNA and 28S rDNA) analyses support the establishment of these two new species.

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Two new species of Rhabdocoela (Polycystididae and Trigonostomidae) from China

Zootaxa ◽

10.11646/zootaxa.4695.4.3 ◽

2019 ◽

Vol 4695 (4) ◽

pp. 351-366

Author(s):

XIAO-ZHOU HU ◽

YU-SI CHEN ◽

LIN-HONG ZHONG ◽

YAO-HANG XIE ◽

WEI-TAO FENG ◽

...

Keyword(s):

New Species ◽

Molecular Phylogeny ◽

18S Rdna ◽

Intertidal Zone ◽

Copulatory Organ ◽

28S Rdna ◽

Muscular Layer ◽

Similar Length ◽

Shenzhen City ◽

Two New Species

Two new species of Rhabdocoela, namely Alcha sinensis n. sp. (Polycystididae) and Trigonostomum sinensis n. sp. (Trigonostomidae), were discovered from the intertidal zone of eastern Shenzhen City, China. For A. sinensis n. sp., the stylet consists of two symmetrical triangular plates and one lamellar plate. All three plates are jagged at their posterior ends. The anterior end of the stylet connects to a thick muscular layer, which causes its movement. For T. sinensis n. sp., the copulatory organ consists of a long-tubular stylet and two "T"-shaped plates (plate I and plate II). The stylet bends 120° at 25% of its length from the base and extends straight distally. Two "T" plates are connected to each other and surround the stylet. Plate I is hook-shaped at its distal end, and plate II has a similar length but only half the width of plate I. The phylogenetic (18S rDNA and 28S rDNA) results also support the establishment of these two new species. On the basis of the molecular phylogeny and morphology of the copulatory organ and bursa appendage, we propose a new categorization of the species of Trigonostomum.

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Macrostomum shenda and M. spiriger, two new brackish-water species of Macrostomum (Platyhelminthes: Macrostomorpha) from China

Zootaxa ◽

10.11646/zootaxa.4603.1.5 ◽

2019 ◽

Vol 4603 (1) ◽

pp. 105

Author(s):

FAN XIN ◽

SI-YU ZHANG ◽

YONG-SHI SHI ◽

LEI WANG ◽

YU ZHANG ◽

...

Keyword(s):

Brackish Water ◽

Phylogenetic Analyses ◽

28S Rdna ◽

Body Region ◽

Rdna Sequences ◽

Molecular Phylogenetic ◽

28S Rdna Sequences ◽

Pore Opening ◽

Brackish Water Species ◽

Water Species

In this study, two new brackish-water species of Macrostomum (M. shenda n. sp. and M. spiriger n. sp.) collected from Shenzhen, China, were described based on morphological, histological, and molecular phylogenetic analyses. Macrostomum shenda n. sp. differs from its congeners in the oblique and non-thickening distal opening of its narrow funnel-shaped stylet. In addition, its sperm have neither bristles nor brush, and are surrounded by an undulating membrane in the mid-body region. In M. spiriger n. sp., the stylet is spirally twisted. Its reproductive apparatus has a seminal bursal pore opening exteriorly. Results of the 18S and 28S rDNA phylogenetic analyses also support the establishments of these two new species. Moreover, the 18S and 28S rDNA sequences of some species within Macrostomum in previous studies have been revised to avoid ambiguity, while Macrostomum dongyuanensis Wang & Sun, 2015 was re-identified as a new record of M. quiritium Kolasa, 1973 from China.

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A new species of Melita from Japan (Crustacea, Amphipoda, Melitidae)

ZooKeys ◽

10.3897/zookeys.760.24778 ◽

2018 ◽

Vol 760 ◽

pp. 73-88

Author(s):

Ko Tomikawa ◽

Kentaro Hirashima ◽

Atsushi Hirai ◽

Ryu Uchiyama

Keyword(s):

New Species ◽

Brackish Water ◽

Anterior Lobe ◽

Nucleotide Sequences ◽

Species Level ◽

Mitochondrial Cytochrome ◽

Japanese Species ◽

Brackish Water Species ◽

A New Species ◽

Water Species

A new brackish-water species of melitid amphipod,Melitachoshigawaensis, from the Choshigawa River, Mie Prefecture, Japan, is named and described.Melitachoshigawaensissp. n.is distinguished from the most similarM.shimizui(Uéno, 1940) by having an elongate and weakly arched male uropod 3, and a deep and strongly hooked anterior lobe of the coxa on the female’s pereopod 6. Nucleotide sequences of the mitochondrial cytochromecoxidase subunit I (COI) ofM.choshigawaensisandM.shimizuisupport divergence at the species level. A key to the Japanese species ofMelitais provided.

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Remarks on the taxonomic status of Jaera danubica Brtek, 2003 (Crustacea: Isopoda: Janiridae)

Zootaxa ◽

10.11646/zootaxa.3161.1.7 ◽

2012 ◽

Vol 3161 (1) ◽

pp. 67 ◽

Cited By ~ 1

Author(s):

PÉTER BORZA

Keyword(s):

New Species ◽

Brackish Water ◽

Intraspecific Variability ◽

Taxonomic Status ◽

Point Of View ◽

Molecular Methods ◽

Taxonomic History ◽

Brackish Water Species ◽

A New Species ◽

Water Species

The representative of the genus Jaera Leach inhabiting continental waters throughout Europe has a rather complex taxonomic history. After discovering it in the River Tisza, Hungary, Dudich (1930) identified it as Jaera nordmanni (Rathke). This emerged to be a mistake, as the species was found to be identical with the subsequently described Jaera sarsi Valkanov (Kesselyák 1938). On the contrary, Veuille (1979) argued that the freshwater form is different from the brackish water species J. sarsi, and described it as a new species, J. istri Veuille, 1979. The new terminology has become widely used; however, recently the concept received criticism, implying that the characteristics distinguishing J. istri from J. sarsi fall within the confines of intraspecific variability (Tobias et al. 2005). Here I tentatively accept the latter point of view, and will refer to the species as J. sarsi in the following, but I also wish to point out that this matter could be settled using molecular methods.

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Les Cyathura Stygobies (Isopoda, Anthuridea) et Surtout Celles des Grandes et des Petites Antilles

Bijdragen tot de Dierkunde ◽

10.1163/26660644-05201003 ◽

1982 ◽

Vol 52 (1) ◽

pp. 13-42 ◽

Cited By ~ 3

Author(s):

Lazare Botosaneanu ◽

Jan H. Stock

Keyword(s):

New Species ◽

Geographic Distribution ◽

Brackish Water ◽

Underground Water ◽

New Subgenus ◽

Ecological Aspects ◽

Definition Of ◽

Brackish Water Species ◽

Water Species

After a review of the morphology of the stygobiont species of Cyathura, five new species are described (one from Cuba, two from Haiti, one from Jamaica, and one from Aruba), and additional details are provided for some other species. Considerations are made on the peculiarities of the geographic distribution of the 11 stygobiont species known at present (forming a circum-Caribbean group and an Indo-Pacific one). A study of the relationships between the various species, and comparison with the non-stygobiont (marine or brackish-water) species of the genus, allows the definition of a subgenus Cyathura s. str. (for all non-stygobiont forms and two marine-interstitial ones) and of a new subgenus, Stygocyathura (containing most of the stygobiont species). In the part devoted to ecological aspects, a 11 stygobiont representatives of the Isopoda Anthuridea are taken into account; amongst them the genus Cyathura has been the most successful in colonizing the underground water Realm, the various habitats of which were electively occupied by different species.

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Mastogloia jahniae sp. nov., a new diatom (Bacillariophyceae) from the Baltic Sea coast of Sweden

Phytotaxa ◽

10.11646/phytotaxa.484.1.6 ◽

2021 ◽

Vol 484 (1) ◽

pp. 121-128

Author(s):

ADIL Y. AL-HANDAL ◽

ANGELA WULFF ◽

CHIARA PENNESI

Keyword(s):

New Species ◽

Baltic Sea ◽

East Coast ◽

Central Area ◽

The Baltic Sea ◽

The Baltic ◽

Brackish Water Species ◽

Water Species ◽

Sea Coast ◽

Scanning Electron

Described is here Mastogloia jahniae sp. nov. a species new to science from Skatan on the Baltic Sea, east coast of Sweden. Description of this new species is based on light and scanning electron microscopy. The new species is classified in the Mastogloia section Ellipticae and is characterized by having radiating short and long striae around the central area, sinuous raphe branches and partecta displaced toward the middle of the valve by a siliceous flange. M. jahniae sp. nov. in terms of size is rather small whereas in terms of ecology appears an epipelic brackish water species. The new species was rather rare in all samples collected from Skatan and has not been found in the other adjacent regions sampled. A comparison with similar established Mastogloia species is provided.

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