scholarly journals New genus of subfamily Cypridopsinae Kaufmann, 1933 (Crustacea: Ostracoda) from Thailand

Author(s):  
Sukonthip Savatenalinton

The new genus Thaicypridopsis gen. nov. described here belongs to the tribe Zonocypridini Higuti & Martens, 2012 in the subfamily Cypridopsinae Kaufmann, 1900. It is the first record of the Recent representatives within this tribe in Southeast Asia and Oriental regions. Thaicypridopsis gen. nov. has a number of remarkable characters that distinguish it from other genera in the subfamily: a submarginal row of distinctive tubercles on the postero-ventral part of the right valve in the interior view, a strong serrated claw G2 on the second antenna with an apical concavity, large bristles with hirsute endings and spatula-shaped apexes on all three maxillular endites and a bifurcate tip on the terminal claw of the second thoracopod. One new species, Thaicypridopsis longispinosa sp. nov., is described under this new genus in the present contribution. Apart from the above diagnostic characters, the new species also has long spines on the valve surface as its outstanding feature. The new taxon is morphologically compared with other related species and genera within and outside the subfamily Cypridopsinae. In addition, due to the new genus belonging to a group of genera with the left valve overlapping the right valve in the subfamily, a key to the genera within this group is given.

Author(s):  
Sukonthip Savatenalinton

A new cypridopsine genus, Cyprettadopsis gen. nov., described here, is principally characterized by the reduced caudal ramus, the strongly serrated claw G2 of the antenna (A2), the A2 subquadrate terminal segment, the undivided penultimate segment of the second thoracopod (T2), the morphology of the third thoracopod bearing a distinctly separated terminal segment, the complete septa on the posteroventral margin and the incomplete septa on the anterior margin of both valves. Based on a combination of these characters, a new tribe, Cyprettadopsini trib. nov., is created in the subfamily Cypridopsinae Kaufmann, 1900 to accommodate this new genus, and one new species, Cyprettadopsis sutura gen. et sp. nov., is described as the type species. Apart from the above generic characters, the following features are also typical of the new species: the tiny needlepoint-like pores along the anterior and ventral margins of both valves, the remarkably large β-seta on the mandibular palp and the considerably short d2 seta on the T2. The presence of marginal septa in the new genus is a distinctive character and constitutes the first record of this feature within Cypridopsinae. The taxonomically relevant characters in the new taxon and related taxa are briefly discussed.


2017 ◽  
Vol 91 (3) ◽  
pp. 566-576 ◽  
Author(s):  
Ricardo A. Bonini ◽  
Gabriela I. Schmidt ◽  
Marcelo A. Reguero ◽  
Esperanza Cerdeño ◽  
Adriana M. Candela ◽  
...  

AbstractA new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene–early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología, Mineralogía y Paleontología, Instituto de Geología y Minería de la Universidad Nacional de Jujuy. It consists of an incomplete mandible preserving the right mandibular ramus with part of the dental series, partially preserved symphysis with all the incisors, and a small portion of the left ramus without teeth. The following characters distinguish it as a new taxon: symphysis long and narrow with slight divergence of its lateral borders; strong procumbence of lower incisors and deeply implanted i3; chin angle lower than in X. major and X. cristatus and bulging labial keel limiting strong lateral concavities. Comparative analysis in the context of the recently revised Neogene Toxodontidae indicates that the Maimará specimen shares mandibular features and dental characters with Xotodon and Mixotoxodon, differing from the latter by the more upraised symphysis. The phylogenetic position of Xotodon maimarensis n. sp. supports the taxonomic interpretation of the studied specimen as a new species of Xotodon. This new Toxodontidae increases the knowledge of the diversity and radiation of this group of notoungulates in northwest Argentina.


Zootaxa ◽  
2017 ◽  
Vol 4243 (2) ◽  
pp. 329 ◽  
Author(s):  
SUKONTHIP SAVATENALINTON

A new genus, Dentocypria n. gen., in the subfamily Cyclocypridinae Kaufmann, 1900 is described from Thailand. The main distinguishing characters of the new genus are the presence of an internal tooth on the antero-ventral part of the left valve, the marginal tubercles on the right valve, the very elongated terminal segment of the madibular palp, the absence of setae on the basal segment of the second thoracopod (T2), the unusually long e-seta of T2, the short terminal segment of the third thoracopod (T3), the long Sp seta of the caudal ramus and the morphology of prehensile palps and hemipenis. Four new species of the new genus are here described: Dentocypria mesquitai n. gen. n. sp., Dentocypria chantaranothaii n. gen. n. sp., Dentocypria smithi n. gen. n. sp. and Dentocypria aequiloba n. gen. n. sp. A brief discussion on the generic characters and a key to the genera of the subfamily are provided. 


Zootaxa ◽  
2020 ◽  
Vol 4722 (2) ◽  
pp. 157-174
Author(s):  
ALLEN F. SANBORN

A recent genetic analysis has shown that the genus Pycna Amyot & Audinet-Serville, 1843 is polyphyletic. New genera are proposed for the species that have been classified together in the genus previously but form distinct clades from the clade containing the true species of Pycna. Pycnoides n. gen. is described for the species inhabiting continental Africa. Pycna antinorii (Lethierry, 1881), Pycna baxteri Distant, 1914, Pycna becarrii (Lethierry, 1881), Pycna dolosa Boulard, 1975a, Pycna hecuba Distant, 1904b, Pycna moniquae Boulard, 2012, Pycna natalensis Distant, 1905b, Pycna neavei Distant, 1912b, Pycna passosdecarvalhoi Boulard, 1975b, Pycna quanza (Distant, 1899a), Pycna semiclara (Germar, 1834), Pycna sylvia (Distant, 1899b), Pycna umbelinae Boulard, 1975b, Pycna vitrea Schumacher, 1913, and Pycna vitticollis (Jacobi, 1904) are reassigned to Pycnoides n. gen. to become Pycnoides antinorii (Lethierry, 1881) n. comb., Pycnoides baxteri (Distant, 1914) n. comb., Pycnoides becarrii (Lethierry, 1881) n. comb., Pycnoides dolosa (Boulard, 1975a) n. comb., Pycnoides hecuba (Distant, 1904b) n. comb., Pycnoides moniquae (Boulard, 2012) n. comb., Pycnoides natalensis (Distant, 1905b) n. comb., Pycnoides neavei (Distant, 1912b) n. comb., Pycnoides passosdecarvalhoi (Boulard, 1975b) n. comb., Pycnoides quanza (Distant, 1899a) n. comb., Pycnoides semiclara (Germar, 1834) n. comb., Pycnoides sylvia (Distant, 1899b) n. comb., Pycnoides umbelinae (Boulard, 1975b) n. comb., Pycnoides vitrea (Schumacher, 1913) n. comb., and Pycnoides vitticollis (Jacobi, 1904) n. comb. Pycnoides zambiaensis n. sp. is described as new to increase the diversity of the new genus further and represents the first record of a species in the group for Zambia. Eopycna n. gen. is described for the Asian species previously assigned to Pycna. Pycna coelestia Distant, 1904a, Pycna concinna Boulard, 2005, Pycna himalayana (Naruse, 1977), Pycna indochinensis Distant, 1913, Pycna minor Liu, 1940, Pycna montana Hayashi, 1978, Pycna repanda (Linnaeus, 1758), and Pycna verna Hayashi, 1982 are reassigned to Eopycna n. gen. to become Eopycna coelestia (Distant, 1904a) n. comb., Eopycna concinna (Boulard, 2005) n. comb., Eopycna himalayana (Naruse, 1977) n. comb., Eopycna indochinensis (Distant, 1913) n. comb., Eopycna minor (Liu, 1940) n. comb., Eopycna montana (Hayashi, 1978) n. comb., Eopycna repanda (Linnaeus, 1758) n. comb., and Eopycna verna (Hayashi, 1982) n. comb. Pycna angusta (Butler, 1882) rev. stat. is removed from junior synonymy of Pycna madagascarensis (Distant, 1881). Pycna schmitzi Boulard, 1979 is reassigned to Canualna Boulard, 1985a to become Canualna schmitzi (Boulard, 1979) n. comb. and Pynca tangana (Strand, 1910) is reassigned to Orapa Distant, 1905c to become Orapa tangana (Strand, 1910) n. comb. 


Zootaxa ◽  
2021 ◽  
Vol 4999 (5) ◽  
pp. 456-468
Author(s):  
GEORGE MELIKA ◽  
JAMES A. NICHOLLS

A new genus, Grahamstoneia Melika & Nicholls, gen. nov., with one new species, G. humboldti Melika & Nicholls, sp. nov., asexual generation, is described. This new taxon occurs in the south-western Nearctic, inducing galls on two species within Quercus section Protobalanus (Q. vacciniifolia Kellogg and Q. chrysolepis Liebm.), an ecology and distribution shared with the closely related genus Heteroecus Kinsey. Descriptions, diagnoses, biology, and host associations for the new genus and species are given. The new taxon is supported by morphological and molecular data.


Zootaxa ◽  
2020 ◽  
Vol 4896 (4) ◽  
pp. 577-585
Author(s):  
YAN ZHI ◽  
LIN YANG ◽  
XIANG-SHENG CHEN

Oliparisca menglaensis sp. nov. (Hemiptera: Fulgoromorpha: Cixiidae: Pentastirini) is described and illustrated from Yunnan Province of China. This represents the first record of the genus Oliparisca from China. The new taxon extends the distribution range of the genus Oliparisca, previously known only from Indonesia, Malaysia, Philippines and Sri Lanka. A key of identification to all known species of this genus and a map of their geographic distributions are provided. 


2022 ◽  
Vol 787 ◽  
Author(s):  
Sukonthip Savatenalinton

A new genus, Thaicypris gen. nov., in the tribe Herpetocypridini Kaufmann, 1900 of the subfamily Herpetocypridinae Kaufmann, 1900 is established to accommodate a new species from Thailand. The present contribution deals with the description of a new genus and species, Thaicypris panhai gen. et sp. nov., which is mainly characterized by the distinctive and raised, inwardly displaced selvage at the postero-ventral part of the right valve (RV) that is not parallel to the valve margin, the absence of an anterior inner list on the RV, the prominent and elevated double inner list on the posterior part of the left valve, the small and three-segmented Rome organ on the first antenna (A1), the spatulated terminal segment of the maxillular (Mx1) palp, the slender caudal ramus (CR) with long and thin Sp seta, the presence of basal triangle on the CR attachment, and the pointed projection at the terminal segment base of the prehensile palps. The hemipenis of the new genus and species is outstanding, especially the medial lateral shield which has a long, beak-shaped protrusion on the distal part. The discovery of this Thai taxon is the first record of the tribe Herpetocypridini in Thailand and the second species of the tribe in Southeast Asia.


2009 ◽  
Vol 40 (4) ◽  
pp. 319-332 ◽  
Author(s):  
Christopher Taylor

AbstractA new genus of Monoscutidae (Arachnida: Opiliones), Australiscutum, containing three new species, A. hunti (type species), A. graciliforceps and A. triplodaemon, is described from Queensland and New South Wales, Australia. Australiscutum triplodaemon differs from all other Opiliones described to date in possessing noticeably asymmetrical chelicerae, with the right chelicera much larger than the left.


Zootaxa ◽  
2011 ◽  
Vol 2882 (1) ◽  
pp. 19 ◽  
Author(s):  
YA-LIN ZHANG ◽  
LING-FEI PENG ◽  
YING-LUN WANG

This paper describes one new flatid genus, Nivalios gen. n., and one new species, N. punctatus sp. n., from southern China. The new genus is assigned to the tribe Nephesini. A key to genera of the tribe Nephesini from the Oriental Region is provided. Scanning electron micrographs of the antennal sensilla, cross-sections through the subapical rostral segment and wax glands on the tegmen of the new species are included.


Crustaceana ◽  
2016 ◽  
Vol 89 (6-7) ◽  
pp. 811-818 ◽  
Author(s):  
Katsushi Sakai

The superfamily Callianassoidea Dana, 1852 currently includes ten families (Sakai, 2011). However, recent examination of material from Tosa-Saga, Kochi Prefecture, Japan, presented the occurrence of a new species,Tosacallianassa hatasagaensisgen. et sp. nov. The deviant morphology of the new taxon shows elements of the families Anacalliacidae Manning & Felder, 1991, Callianassidae Dana, 1852, and Callianopsidae Manning & Felder, 1991 (cf. sensu nov. in Sakai, 2011). This necessitated the author to also establish a new family, Tosacallianassidae, based on the new genus. The new family is additionally included in the Callianassoidea Dana, 1852 as an eleventh member of that superfamily.


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