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

Zootaxa ◽  
2009 ◽  
Vol 2092 (1) ◽  
pp. 1-20 ◽  
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).

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

Zootaxa ◽  
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. 

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

Zootaxa ◽  
2019 ◽  
Vol 4679 (2) ◽  
pp. 353-364
Author(s):  
LIN-HONG ZHONG ◽  
YAO-HANG XIE ◽  
XIAO-ZHOU HU ◽  
YU-SI CHEN ◽  
WEI-TAO FENG ◽  
...  
Keyword(s):  
New Species ◽  
Brackish Water ◽  
18S Rdna ◽  
Intertidal Zone ◽  
28S Rdna ◽  
Two New Species ◽  
Brackish Water Species ◽  
Water Species

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. 

Two new Gammarus species (Crustacea: Amphipoda: Gammaridae) from Zagros Mountains, Iran

Zootaxa ◽  
2011 ◽  
Vol 2894 (1) ◽  
pp. 39 ◽  
Author(s):  
MARYAM HEKMATARA ◽  
ALIREZA SARI ◽  
MOHAMMAD-HADI HEIDARY BALADEHI
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Anterior Margin ◽  
Gammarus Pulex ◽  
The Other ◽  
Zagros Mountains ◽  
Remarkable Feature ◽  
New Findings ◽  
Two New Species ◽  
Morphological Differences

The present study tries to focus on describing two new species belonging to genus Gammarus from western Iran along the Zagros Mountains range. The most remarkable feature of Gammarus hegmatanensis sp. n. is the shape of epimeral plate 3, which is sharply pointed posteriorly with a distinct lobate anterior margin. This species has some similarities with and differences from some other species of Gammarus pulex–group such as G. parthicus and G. syriacus. The other species, G. sirvannus sp. n. with elongated eyes is similar to G. duebeni, G. lobifer, G. balutchi and G. loeffleri, but it shows prominent morphological differences and a distinct geographical distribution from these species. These new findings shed more light on the information available on amphipod fauna of Iran.

Description of two new species of the genus Automate De Man, 1888 (Crustacea: Decapoda: Caridea) from the South China Sea

Zootaxa ◽  
2017 ◽  
Vol 4238 (1) ◽  
pp. 30 ◽  
Author(s):  
YAN-RONG WANG ◽  
ZHONG-LI SHA
Keyword(s):  
New Species ◽  
South China Sea ◽  
South China ◽  
Anterior Margin ◽  
Cutting Edge ◽  
Ventral Margin ◽  
Lower Margin ◽  
The Third ◽  
Two New Species ◽  
De Man

Three species of the genus Automate De Man, 1888 are described herein, including two new species: A. anacanthopusoides sp. nov. and A. spinosa sp. nov.. Automate anacanthopusoides sp. nov. can be easily identified by the presence of a rostrum, the notch on the lower margin of the major chela, the stout minor cheliped and the cutting edge of the pollex not dentate, and by the absence of spines on the ventral margin of the propodus of the third and fourth pereiopod. Automate spinosa sp. nov. can be easily identified by the nearly straight anterior margin of the carapace, and the presence of spines on the ventral margin of the propodus of third and fourth pereiopod. A key of all species of the Automate is provided. 

Taxonomic and morphological revision of butterfly rays of the Gymnura micrura (Bloch & Schneider 1801) species complex, with the description of two new species (Myliobatiformes: Gymnuridae)

Zootaxa ◽  
2017 ◽  
Vol 4332 (1) ◽  
pp. 1 ◽  
Author(s):  
LEANDRO YOKOTA ◽  
MARCELO RODRIGUES DE CARVALHO
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Other ◽  
External Morphology ◽  
Valid Species ◽  
Lateral Line System ◽  
Western Atlantic ◽  
Line System ◽  
Lower Lip ◽  
Two New Species

An extensive taxonomic revision of Gymnura micrura based on external and internal morphology, and considering specimens from its entire geographical distribution in the Atlantic Ocean, is presented. Gymnura micrura is redescribed and a neotype is designated; its distributional range is limited to the Southwestern Atlantic. Two new species of butterfly rays are described: Gymnura lessae, sp. nov., occurring in the North and Central Western Atlantic, and Gymnura sereti, sp. nov., found in the Eastern Central Atlantic. The three species are morphologically very similar (with G. micrura most similar to G. lessae, sp. nov.) and cannot be distinguished based on the primary diagnostic characters typically utilized for butterfly rays. The dorsal color, smaller size and eventual presence of a dorsal fin in some males may be helpful to distinguish G. micrura, whereas the size and morphology of the clasper are the main external characters separating G. sereti, sp. nov., from the other two species, although the shape of disc (especially among adult males) and contour of the lower lip are also helpful. Despite the skeleton being conservative among the species, we found consistent variations that support the validity of the new species described. Due to similarity in external morphology these internal characters were fundamental to discriminate the new species. The scapulocoracoid was an important diagnostic skeletal structure, exhibiting a series of variations that separated the three species. Variations in the synarcual, outline of the dorsal cranial fontanelle, number and shape of mesopterygia, and small differences in the mandibular arches and pelvic girdle were useful to diagnose G. sereti, sp. nov. The contour of the hyomandibula was an important diagnostic character distinguishing G. lessae, sp. nov., from the other two species. Meristic data were also useful, with G. sereti, sp. nov., presenting a lower number of radials in the second element of the mesopterygium and a higher number of diplospondylous vertebrae. In contrast, G. lessae, sp. nov., presented a higher number of pectoral-fin radials. Subtle, but consistent differences, were also found in the design of the ventral lateral-line system. A Canonical Discriminant Analysis provides strong statistical support for the validity of the new species, significantly distinguishing the three species groupings (p < 0.00001). External morphology, ventral lateral-line system and skeleton are described and illustrated for all three valid species. 

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

ZooKeys ◽  
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.

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

Zootaxa ◽  
2012 ◽  
Vol 3161 (1) ◽  
pp. 67 ◽  
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.

Tetramphora croatica sp. nov.—A new brackish-water species from Lake Vransko, Croatia

Phytotaxa ◽  
2019 ◽  
Vol 401 (4) ◽  
pp. 276
Author(s):  
KATARINA CAPUT MIHALIĆ ◽  
MARIJA GLIGORA UDOVIČ ◽  
INES GALOVIĆ ◽  
IGOR STANKOVIĆ ◽  
MIRELA ŠUŠNJARA ◽  
...  
Keyword(s):  
New Species ◽  
Dorsal Margin ◽  
Ventral Margin ◽  
Unique Combination ◽  
Molecular Analyses ◽  
New Findings ◽  
Long Time ◽  
Brackish Water Species ◽  
A New Species ◽  
Water Species

The genus Amphora sensu lato was considered highly heterogeneous for a long time. Modern microscopy and molecular analyses revealed significant differences in cell morphology and structure, thus suggesting polyphyly of the genus. New findings resulted in separation and description of several amphoroid genera. Recently, the genus Tetramphora Mereschkowsky was re-established based on ultrastructural and molecular analyses. The genus is widely spread in marine and brackish habitats. Recent observations of contemporary flora and cores from Lake Vransko (Croatia) revealed a new species of Tetramphora. The new species is characterized by having large semi-elliptical valves with arched dorsal margin and biarcuate ventral margin, length of 49.0–78.0 µm and width between 7.5–12.0 µm. The raphe is discontinuous, with proximal raphe ends externally covered with large siliceous flap. Striae are uniseriate, composed of small round to elongated areolae. Based on this unique combination of characters visible on light and scanning electron microscope, a new species Tetramphora croatica sp. nov. is described.

scholarly journals Description of two new species of Paraonidae (Annelida) from the Gulf of Thailand, Western Pacific

ZooKeys ◽  
2020 ◽  
Vol 951 ◽  
pp. 1-20 ◽  
Author(s):  
Jintana Plathong ◽  
Pablo Hernández-Alcántara ◽  
Leslie Harris ◽  
Sakanan Plathong
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
The Other ◽  
Western Pacific ◽  
Gulf Of Thailand ◽  
Digital Repository ◽  
Red Pigments ◽  
Two New Species ◽  
Soft Bottoms ◽  
The Gulf Of Thailand

Two new species of Aricidea Webster, 1879 (Paraonidae), Aricidea (Acmira) anusakdiisp. nov. and Aricidea (Aricidea) thammapinanaesp. nov. were collected from 10–26.5 m depth, in soft bottoms with mud mixed with sand and shells at Songkhla Sea, the Gulf of Thailand between 2011–2018. Aricidea (Acmira) anusakdiisp. nov. is clearly distinguished from other species of the subgenus Acmira by having a rounded bilobed prostomium divided by a slight notch on the anterior margin; red pigments on the subdistal to the tip of each branchia (new character); two prebranchial chaetigers; 48–68 pairs of branchiae; and modified neurochaetae as strong curved spines with blunt shafts surrounded by pubescence from chaetigers 19–44. On the other hand, Aricidea (Aricidea) thammapinanaesp. nov. can be separated from other members of the subgenus Aricidea by the presence of a biarticulated median antenna; distinctive notopodial lobes as broad triangular with short distal protuberances on chaetiger 3, 4–8 pairs of branchiae; and modified neurochaetae as bidentate neurochaetae with a long pubescent subterminal arista on the concave side. All data have been archived and are freely available from the Dryad Digital Repository (https://doi.org/10.5061/dryad.hqbzkh1cn).

Ficopomatus talehsapensis, a new brackish-water species (Polychaeta: Serpulidae: Ficopomatinae) from Thailand, with discussions on the relationships of taxa constituting the subfamily, opercular insertion as a taxonomic character and their taxonomy, a key to its taxa, and their zoogeography

Zootaxa ◽  
2008 ◽  
Vol 1967 (1) ◽  
pp. 36-52 ◽  
Author(s):  
T. GOTTFRIED PILLAI
Keyword(s):  
Larval Development ◽  
Brackish Water ◽  
The Other ◽  
Taxonomic Character ◽  
Polychaete Species ◽  
Marine Habitats ◽  
Relationship Of ◽  
The Relationship ◽  
Brackish Water Species ◽  
Water Species

A new brackish-water serpulid polychaete species belonging to the genus Ficopomatus from Thailand is described. It had previously been identified as another known species belonging to the same genus. Taxonomic problems within the subfamily Ficopomatinae to which it belongs and the relationship of the genus Marifugia and its single known species which occurs in freshwater are discussed. While the other known genera of the subfamily possess seven thoracic chaetigers, Marifugia has six, but agrees with the former with regard to all other important characters. Likewise, among typically marine taxa, the genus Pomatoleios has six thoracic characters but agrees with the genera Pomatoceros and Spirobranchus with regard to all other important characters. As there are also other known serpulid genera having six thoracic chaetigers, an analysis was undertaken of 10 genera, six of them having six thoracic chaetigers and the remaining four seven. It revealed that Marifugia is the sister to the clade containing the other two genera of the Ficopomatinae (Neopomatus and Ficopomatus) and Pomatoleios is sister to the clade containing Pomatoceros and Spirobranchus. The usefulness of opercular insertion/derivation from a particular branchial radiole as a character in serpulid taxonomy is discussed. As observed in adults and juveniles of species belonging to ficopomatine genera, as well on available evidence on post-larval development, their opercular insertion is in the position of the first branchial radiole, unlike in genera such as Pomatoceros and Hydroides where it is on the second. A key to the known taxa of the subfamily is provided. Although they may be geographically separated by oceanic and/or terrestrial barriers, their common characters, including their ability to survive and propagate in their respective typically non-marine habitats, are indicative of their monophyly.

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