scholarly journals Siamopsis gen. nov. and five new species of the subfamily Cypridopsinae Kaufmann, 1900 (Crustacea: Ostracoda) from Thailand

2017 ◽  
Author(s):  
Sukonthip Savatenalinton
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Genus ◽  
Soft Part ◽  
Terminal Segment ◽  
The Other ◽  
Dorsal Margin ◽  
Left Valve ◽  
The Family ◽  
The Right

Siamopsis gen. nov., described here, belongs to a group of genera with the right valve overlapping the left valve in the subfamily Cypridopsinae Kaufmann, 1900 of the family Cyprididae Baird, 1845. The distinguishing characters of the new genus are in the morphology of its valves and soft parts. The postero-dorsal margin of the internal left valve is plate-like protruded. The morphology of this plate varies in different species, e.g., some species bear a tooth-like tubercle on the plate. The posterior margin of the right valve is recurved inwardly at ca mid-height, resulting in the occurrence of a lobe-like expansion that can clearly be seen in the dorsal and caudal views of the carapace. In addition, the other diagnostic soft part features of the new genus are the cylindrical caudal ramus, the presence of two t-setae on the female A2 penultimate segment, the very elongated terminal segment of the Mx1 palp, the morphology of the two large bristles (tooth bristles) of the Mx1 third endite (one smooth, one serrated) and the absence of d-seta on T1. In the present paper, five new species are described under this new genus: Siamopsis renateae gen. et sp. nov., S. suttajiti gen. et sp. nov., S. conspecta gen. et sp. nov., S. khoratensis gen. et sp. nov. and Siamopsis planitia gen. et sp. nov. A key to the species of Siamopsis gen. nov. is also provided.

On Schornikovdona gen. nov. (Ostracoda, Candonidae) from rheocrene springs in Texas (U.S.A.)

Crustaceana ◽  
2017 ◽  
Vol 90 (11-12) ◽  
pp. 1443-1461 ◽  
Author(s):  
Okan Külköylüoğlu ◽  
Mehmet Yavuzatmaca ◽  
Derya Akdemi̇r ◽  
Peter H. Diaz ◽  
Randy Gibson
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Terminal Segment ◽  
The Other ◽  
Surface Normal ◽  
Diagnostic Characteristics ◽  
The Family ◽  
Sensory Seta

A new candonid genus,Schornikovdonagen. nov., with its type speciesSchornikovdona bellensissp. nov., is described from rheocrene springs of Bell County, Texas. It is designated to the tribe Candonini due to the smooth carapace surface, normal pore openings with sensory seta, the presence of a 5-segmented first antenna, two long sexual bristles on the second antenna in males, the narrowly fused terminal segment of the Md palp, a long penultimate segment of the Mxl palp, two long and one short setae on the terminal segment of T3, the absence of an “e” seta on T3, the presence of a posterior seta on the uropod, the presence of 5 + 2 rows of spines on Zenker’s organ, and other characteristics found in the tribe. The main diagnostic characteristics separating the new genus from the other genera in the tribe are the shape of the carapace, the reduced numbers of segments in the first antenna, reduction or absence of exopodial setae in the second antenna, asymmetrical clasping organs, the uropod with one rod-shaped claw, the different shape of the hemipenis, and differences in parts of the chaetotaxy. Based on these differences, we proposeSchornikovdonagen. nov. as a new genus, with the new speciesS. bellensissp. nov., in the subfamily Candoninae in the family Candonidae.

A new genus and four new species of subfamily Cyclocypridinae (Crustacea, Ostracoda) from Thailand

Zootaxa ◽  
2017 ◽  
Vol 4243 (2) ◽  
pp. 329 ◽  
Author(s):  
SUKONTHIP SAVATENALINTON
Keyword(s):  
New Species ◽  
New Genus ◽  
Terminal Segment ◽  
Ventral Part ◽  
Left Valve ◽  
Basal Segment ◽  
Caudal Ramus ◽  
The Third ◽  
The Right

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. 

A new genus and new species of hermit crab (Crustacea: Anomura: Paguroidea: Diogenidae) from the eastern tropical Pacific

Zootaxa ◽  
2010 ◽  
Vol 2677 (1) ◽  
pp. 49
Author(s):  
MANUEL AYÓN-PARENTE ◽  
MICHEL E. HENDRICKX
Keyword(s):  
New Species ◽  
Hermit Crab ◽  
Posterior Margin ◽  
New Genus ◽  
Tropical Pacific ◽  
The Other ◽  
Monotypic Genus ◽  
Eastern Tropical Pacific ◽  
The Family ◽  
A New Species

Tetralobistes gen. nov., a presently monotypic genus of hermit crab of the family Diogenidae, is described to accommodate a new species, Tetralobistes bicentenarius sp. nov. In many characters, Tetralobistes gen. nov. is similar to Areopaguristes Rahayu & McLaughlin, 2010, Paguristes Dana, 1851, and Pseudopaguristes Mclaughlin, 2002. However, it differs most significantly in the morphology of the male first pleopods and lacks male second and female first pleopods. The most conspicuous character separating Tetralobistes gen. nov. from the other three genera is the shape of the telson, with a typical subdivided (four-lobes) posterior margin.

Parakari a New Genus of the Family Baetidae (Insecta: Ephemeroptera) from Guyana Highlands

Zootaxa ◽  
2011 ◽  
Vol 3032 (1) ◽  
pp. 47 ◽  
Author(s):  
CAROLINA NIETO ◽  
TOMÁŠ DERKA
Keyword(s):  
New Species ◽  
South America ◽  
New Genus ◽  
The Other ◽  
Obtuse Angle ◽  
Diverse Families ◽  
The Family ◽  
Two New Species ◽  
High Level ◽  
Table Mountains

Baetidae is one of the most diverse families of Ephemeroptera. In South America this family now encompasses 27 genera and more than 130 species. The Guyana region is known for its extraordinary diversity and high level of endemism, which is, above all, remarkable at the tops of the isolated flat-topped table mountains – tepuis. Recently various international speleological expeditions to Churí-tepui explored the cave systems of this mountain. Here we describe a new genus of Baetidae recently found during the mentioned expeditions to Churí-tepui and Auyán-tepui. Parakari n. gen. can be distinguish from the other genera of this family, among other characters, in the nymphs by the absence of abdominal gills I, tarsal claws with subapical denticle larger than the others, right mandible with prostheca bifid and pectinate and with incisors positioned in obtuse angle to mola area, lingua with a tuft of setae, segment II of maxillary palpi with a concavity and a hole apically and segment II of labial palpi with a strong distomedial projection. In the adults the hind wings are absent and genitalia with segment II of forceps with a constriction, segment III elongate and long. Two new species are included in this genus; each one was collected at different tepui. A key and illustrations are included.

On a New Genus and New Species of Potamid Crab (Brachyura) From Burma

Crustaceana ◽  
1996 ◽  
Vol 69 (8) ◽  
pp. 1005-1013 ◽  
Author(s):  
Peter K.L. Ng
Keyword(s):  
New Species ◽  
New Genus ◽  
Taxonomic Status ◽  
Terminal Segment ◽  
Dorsal Margin ◽  
Freshwater Crab

AbstractA new genus and new species of potamid freshwater crab from Burma (present Myanmar), Flabellamon pretzmanni, is described. Flabellamon differs from other potamid genera in having a flat, transverse carapace with well developed epibranchial teeth which are separated from the external orbital angles by deep V-shaped clefts, and a short and relatively stout G1 which has a well developed fold on the dorsal margin of the terminal segment. The taxonomic status of two supposedly allied species, Potamon turgidulum Alcock, 1909, and Potamon kuehnelti Pretzmann, 1963, is also discussed.

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

2018 ◽  
Author(s):  
Sukonthip Savatenalinton
Keyword(s):  
New Species ◽  
New Genus ◽  
First Record ◽  
New Taxon ◽  
Left Valve ◽  
Present Contribution ◽  
The Right ◽  
Terminal Claw ◽  
One New Species ◽  
Interior View

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.

scholarly journals Two new tanaidaceans (Crustacea: Peracarida) from Portuguese submarine canyons (NE Atlantic, West Iberian Margin)

2021 ◽  
Vol 740 ◽  
Author(s):  
Álvaro García-Herrero ◽  
Patricia Esquete ◽  
Marina R. Cunha
Keyword(s):  
New Species ◽  
Deep Sea ◽  
New Genus ◽  
The Other ◽  
Ne Atlantic ◽  
Submarine Canyons ◽  
The Family ◽  
Two New Species ◽  
Water Depths ◽  
Iberian Margin

The Tanaidacea are ubiquitous and amongst the most abundant taxa in the deep sea. However, their diversity in submarine canyons remains largely unknown. Here, two new species and a new genus of Paratanaoidea are described. Paranarthrura cousteaui sp. nov. is distinguished by the combination of the following characters: post-cheliped sclerites not fused, presence of one seta in the maxilliped endite, one long midventral seta in cheliped, one penicillate seta in the basis of pereopods 4–6, uropod endopod bi-articulated and uropod exopod shorter than endopod article 1. This species was found at the upper reaches of three Portuguese canyons, Cascais, Setúbal and Nazaré Canyons, and the adjacent open slope, between 897 and 1001 m water depths. Tirana vallis gen. et sp. nov. presents a combination of the characters that define the other two genera of Paranarthrurellidae, Paranarthrurella and Armatognathia, but also unique characters within the family: the antenna, cheliped and uropod are more elongate than the rest of the species; the pereopods 4–6 carpus spines reach at least half of the length of the propodus and the propodus of pereopods 4–6 have ramified subdistal spines. This species was found at the middle reaches of Setúbal Canyon (3214–3219 m water depth).

scholarly journals A new genus and species of pinworm (Nematoda, Oxyuridae) from the gray mouse opossum, Tlacuatzin canescens

Parasite ◽  
2019 ◽  
Vol 26 ◽  
pp. 50
Author(s):  
F. Agustín Jiménez ◽  
Juan Manuel Caspeta-Mandujano ◽  
Sergio Albino-Miranda
Keyword(s):  
New Species ◽  
Small Area ◽  
New Genus ◽  
Dry Forest ◽  
The Other ◽  
New Genus And Species ◽  
American Museum ◽  
The Family ◽  
Unique Clade ◽  
Deciduous Dry Forest

Tlacuatzoxyuris simpsoni n. gen. n. sp. is described from the cecum of the gray opossum, Tlacuatzin canescens, a species endemic to the deciduous dry forest of Mexico. The digestive tracts of four specimens were examined for parasites; three of these were archived in the American Museum of Natural History and one was a live capture. Relative to the other four monotypic genera of pinworms known to infect opossums, the new genus is diagnosed on the basis of a round cephalic plate with a semicircular stoma surrounded by a rim. In addition, males feature a prominent cephalic vesicle not fully developed in females, accounting for sexual dimorphism. The new species includes small worms that feature a conspicuous, not reticulated cephalic vesicle and semicircular stoma and lateral alae with two crests. In addition, the postcloacal cuticle of males features a small area with ornamentation between cloaca and submedial papillae. Finally, both spicule and gubernaculum are relatively short. Although the eggs of Tlacuatzoxyuris n. gen. are unknown, the conspicuous differences in traits used in the diagnosis of genera prompted us to propose a new genus for the new species. This is the first species of Oxyuridae reported in mouse opossums outside South America, and the fifth species of the family occurring in didelphimorph marsupials. This is an example of the usefulness of documenting the diversity of parasites associated with this unique clade of mammals through the examination of preserved tissues.

scholarly journals THE PARASITIC CRUSTACEANS OF FISHES FROM THE BRAZILIAN AMAZON. 5. BRASERGASILUS GEN. NOV. (COPEPODA: CYCLOPIDEA), A "THREE-LEGGED" ERGASILID, WITH TWO NEW SPECIES AND THE PROPOSAL OF ABERGASILINAE SUBFAM. NOV.

1983 ◽  
Vol 13 (1) ◽  
pp. 195-214 ◽  
Author(s):  
Vernon E. Thatcher ◽  
◽  
Walter A. Boeger
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Antennal Segment ◽  
Brazilian Amazon ◽  
The Other ◽  
Host Fish ◽  
The Family ◽  
Two New Species ◽  
Gill Parasites

ABSTRACT Brasergasilus jaraquensis gen. et sp. nov. and B. anodus sp. nov. (Copepoda: Cyclopidea: Ergasilidae), gill parasites of Semaprochiiodus insignis (Schomburgk) and Anodus elongatus Spix, are described from the Amazon River. The new genus has only three pairs of swimming legs and in this respect is similar only to one species from New Zealand, Abergasilus amplexus Hewitt, 1978. The two genera also have in common a three-segmented prehensile antenna. Abergasilus, however, has the base of the second antennal segment developed into a massive spine which abutts against the claw-like third segment. The new genus completely lacks this fundamental structure. Aditionally, Abergasilus has six free thoracic segments while the new genus only has five. Abergasilinae Subfam. nov. is proposed for these two genera and their three species. Ergasilinae nom. nov. is provisionally defined and proposed to include the other 11 genera of the family. The type species of Brasergasilus gen. nov. is B. jaraquensis sp. nov. and it can be distinguished from B. anodus sp. nov. by the following characteristics: 1) The type species is larger and of a greenish coloration while B. anodus has fewer pigment granules that are of a bluish tint. 2) B. jaraquensis has a more slender second antenna and the most abrupt bend of the claw occurs distally; the second antenna of B. anodus is thicker and the abrupt bend Is found proximally. 3) The uropod of the type species has two setae and two small spines, while that of the other species has three setae and lacks spines. 4) The first leg of B. jaraquensis is laterally serrate while that of B. anodus is pectinate. The two species parasitize two different genera of host fish and are probably host specific.

scholarly journals Systematics of Neotropical microteiid lizards (Gymnophthalmidae, Cercosaurinae), with the description of a new genus and species from the Andean montane forests

ZooKeys ◽  
2018 ◽  
Vol 774 ◽  
pp. 105-139 ◽  
Author(s):  
Jiří Moravec ◽  
Jiří Šmíd ◽  
Jan Štundl ◽  
Edgar Lehr
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
New Genus ◽  
The Other ◽  
Slender Body ◽  
New Genus And Species ◽  
Montane Forests ◽  
Study Material ◽  
The Family ◽  
Phylogenetic Affinities

Cercosaurine lizards (subfamily Cercosaurinae of the family Gymnophthalmidae) represent a substantial component of the reptile fauna in the Neotropics. Several attempts have been made to reconstruct the phylogenetic relationships within this group, but most studies focused on particular genera or regions and did not cover the subfamily as a whole. In this study, material from the montane forests of Peru was newly sequenced. In combination with all cercosaurine sequences available on GenBank, an updated phylogeny of Cercosaurinae is provided. Monophyly was not supported for three of the currently recognised genera (Echinosaura, Oreosaurus, and Proctoporus). The genus Proctoporus is formed by five monophyletic groups, which should be used in future taxonomic revisions as feasible entities. Recognition of two previously identified undescribed clades (Unnamed clades 2 and 3) was supported and yet another undescribed clade (termed here Unnamed clade 4), which deserves recognition as an independent genus, was identified herein. Selvasaurabrava, a new genus and new species of arboreal gymnophthalmid lizard is described from the montane forests of the Pui Pui Protected Forest, Provincia de Chanchamayo, Región Junín, Peru. The new species is characterised by its small size (SVL 42.1–45.9 mm), slender body, smooth head shields, presence of paired prefrontal shields, fused anteriormost supraocular and anteriormost superciliary shields, transparent not divided lower palpebral disc, slightly rugose subimbricate rectangular dorsal scales in adults (slightly keeled in juveniles), distinctly smaller but non-granular lateral scales, smooth squared to rectangular ventral scales, and hemipenial lobes large, distinct from the hemipenial body. Phylogenetic affinities of the new genus to the other cercosaurine genera, as well as basal phylogenetic relationships between the other cercosaurine genera remain unresolved.

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