Two new genera of geoplaninid land planarians (Platyhelminthes : Tricladida : Terricola) of Brazil in the light of cephalic specialisations

2003 ◽  
Vol 17 (3) ◽  
pp. 449 ◽  
Author(s):  
F. Carbayo ◽  
A. M. Leal-Zanchet
Keyword(s):  
New Species ◽  
Type Species ◽  
Cephalic Region ◽  
The Body ◽  
External Morphology ◽  
Retractor Muscle ◽  
New Genera ◽  
Longitudinal Muscles ◽  
A New Species

Two new genera of geoplaninid land planarians are described. Cephalic specialisations, mainly external morphology and musculature development, partially define each genus. Cephaloflexa, gen. nov. shows some peculiar characteristics, such as a gradual narrowing of the anterior third of the body and an upwards roll of the anterior tip, the absence of eyes and sensory pits on the apex, and the existence of a retractor muscle derived from the ventral cutaneous longitudinal musculature. Geoplana bergi Graff, 1899 is allocated to Cephaloflexa and is designated as the type species. The ventral cutaneous longitudinal muscles of Supramontana, gen. nov. (monotypic), are partially sunk into the mesenchyme, thus constituting a cephalic retractor muscle. A new species of each genus is also described. The external morphology and anatomy of the cephalic region of the new genera and of Geoplana Stimpson, 1857, Choeradoplana Graff, 1896 and Issoca C. G. Froehlich, 1955 are analysed. Emendations to the diagnoses of Issoca and Choeradoplana are proposed based on cephalic differentiations. Spanish abstractSe decriben Cephaloflexa, gen. nov. y Supramontana, gen. nov., dos nuevos géneros de planarias terrrestres de la subfamilia Geoplaninae, ambos caracterizados por especializaciones cefálicas, como la morfología externa y el desarrollo muscular. Se describe una nueva especie de cada género. Se transfiere Geoplana bergi Graff, 1899 para el género Cephaloflexa y se la designa especie tipo. Cephaloflexa, gen. nov. presenta características peculiares, como el tercio anterior del cuerpo muy fino, región anterior enrollada hacia el dorso, ausencia de ojos y fosetas sensoriales en el ápice anterior del cuerpo, y un músculo retractor derivado de la musculatura subcutánea longitudinal ventral. Supramontana, gen. nov., género monotípico, tiene parte de la musculatura subcutánea longitudinal ventral hundida en el mesénquima y transformada en la región anterior en un músculo retractor cefálico. Se analiza la morfología externa y la anatomía de la región cefálica de Geoplana Stimpson, 1857, Choeradoplana Graff, 1896 e Issoca Froehlich, 1955 y se proponen enmiendas a las diagnosis de Choeradoplana e Issoca basadas en las diferenciaciones cefálicas.

Three new species, two new genera, and new family Biphragmosagittidae (Сhaetognatha) from Southwest Pacific Ocean

2011 ◽  
Vol 20 (1) ◽  
pp. 161-173
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characters ◽  
The Body ◽  
New Order ◽  
New Genera ◽  
New Family ◽  
The Family ◽  
Three New Species

Resuming published and own data, a revision of classification of Chaetognatha is presented. The family Sagittidae Claus & Grobben, 1905 is given a rank of subclass, Sagittiones, characterised, in particular, by the presence of two pairs of sac-like gelatinous structures or two pairs of fins. Besides the order Aphragmophora Tokioka, 1965, it contains the new order Biphragmosagittiformes ord. nov., which is a unique group of Chaetognatha with an unusual combination of morphological characters: the transverse muscles present in both the trunk and the tail sections of the body; the seminal vesicles simple, without internal complex compartments; the presence of two pairs of lateral fins. The only family assigned to the new order, Biphragmosagittidae fam. nov., contains two genera. Diagnoses of the two new genera, Biphragmosagitta gen. nov. (type species B. tarasovi sp. nov. and B. angusticephala sp. nov.) and Biphragmofastigata gen. nov. (type species B. fastigata sp. nov.), detailed descriptions and pictures of the three new species are presented.

A new species of Largocephalosaurus (Diapsida: Saurosphargidae), with implications for the morphological diversity and phylogeny of the group

2013 ◽  
Vol 151 (1) ◽  
pp. 100-120 ◽  
Author(s):  
CHUN LI ◽  
DA-YONG JIANG ◽  
LONG CHENG ◽  
XIAO-CHUN WU ◽  
OLIVIER RIEPPEL
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Diversity ◽  
Transverse Process ◽  
Sister Group ◽  
The Body ◽  
Current Evidence ◽  
Diagnostic Features ◽  
Additional Information ◽  
A New Species

AbstractLargocephalosaurus polycarpon Cheng et al. 2012a was erected after the study of the skull and some parts of a skeleton and considered to be an eosauropterygian. Here we describe a new species of the genus, Largocephalosaurus qianensis, based on three specimens. The new species provides many anatomical details which were described only briefly or not at all in the type species, and clearly indicates that Largocephalosaurus is a saurosphargid. It differs from the type species mainly in having three premaxillary teeth, a very short retroarticular process, a large pineal foramen, two sacral vertebrae, and elongated small granular osteoderms mixed with some large ones along the lateral most side of the body. With additional information from the new species, we revise the diagnosis and the phylogenetic relationships of Largocephalosaurus and clarify a set of diagnostic features for the Saurosphargidae Li et al. 2011. Largocephalosaurus is characterized primarily by an oval supratemporal fenestra, an elongate dorsal ‘rib-basket’, a narrow and elongate transverse process of the dorsal vertebrae, and the lack of a complete dorsal carapace of osteoderms. The Saurosphargidae is distinct mainly in having a retracted external naris, a jugal–squamosal contact, a large supratemporal extensively contacting the quadrate shaft, a leaf-like tooth crown with convex labial surface and concave lingual surface, a closed dorsal ‘rib-basket’, many dorsal osteoderms, a large boomerang-like or atypical T-shaped interclavicle. Current evidence suggests that the Saurosphargidae is the sister-group of the Sauropterygia and that Largocephalosaurus is the sister-group of the Saurosphargis–Sinosaurosphargis clade within the family.

Morphometric and molecular analyses of Skrjabinolecithum pyriforme n. sp. (Digenea: Haploporidae) in mullet fish from the Primorsky Region, Russia

2016 ◽  
Vol 91 (5) ◽  
pp. 625-632 ◽  
Author(s):  
V.V. Besprozvannykh ◽  
D.M. Atopkin ◽  
A.V. Ermolenko ◽  
A.Yu. Beloded
Keyword(s):  
New Species ◽  
Oral Sucker ◽  
Body Length ◽  
Type Species ◽  
Close Relationships ◽  
The Body ◽  
Similar Species ◽  
Body Width ◽  
Molecular Analyses ◽  
A New Species

AbstractA new species of Skrjabinolecithum (Digenea: Waretrematinae), Skrjabinolecithum pyriforme n. sp., has been found in the intestines of Liza haematocheila and Mugil cephalus from the Primorsky Region, Russia. These worms differ from S. vitellosum and S. lobolecithum by the presence of two caeca, as do S. spasskii, S. indicum and S. bengalensis. These species differ morphologically from S. pyriforme n. sp. by a number of features, including body width, oral sucker, pharynx, eggs and ratio of length and width of the body. The most similar species to S. pyriforme n. sp. is Platydidymus flecterotestis (Zhukov, 1971) with some differences in maximal body length, testis and egg sizes. The results of molecular analysis confirmed that this new species belongs to Skrjabinolecithum on the basis of close relationships with S. spasskii-type species.

A New Species of Ramakrishnaia Bolivar, 1918, from South India, and a Related New Genus (Orthoptera: Pyrgomorphidae)

1964 ◽  
Vol 96 (12) ◽  
pp. 1497-1504 ◽  
Author(s):  
D. Keith McE. Kevan
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
South India ◽  
External Morphology ◽  
South Indian ◽  
A New Species

AbstractRamakrishnaia is a south Indian genus of Pyrgomorphidae related to Colemania. A lectotype for the type species of the latter, C. sphenarioides, is here designated. Two species of Ramakrishnaia have hitherto been described: the type species, R. notabilis (for which a lectotype is here designated), and R. raoi. R. gracilis, a new species from Coorg, is described. R. raoi, on the basis of its phallic structures and external morphology, is removed to a new genus, Nilgiracris.

scholarly journals A new species of Melanophryniscus (Anura, Bufonidae) from Uruguay

2008 ◽  
Vol 98 (2) ◽  
pp. 189-192 ◽  
Author(s):  
Raúl Maneyro ◽  
Daniel E. Naya ◽  
Diego Baldo
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
The Body ◽  
External Morphology ◽  
A New Species

A new species of bufonid toad of the genus Melanophryniscus from northern Uruguay is described. It is included in the M. moreirae group and its external morphology is similar to Melanophryniscus sanmartini. Melanophryniscus sp. nov. is distinguished by having a light brown dorsal coloration with six darker longitudinal glandular ridges on the dorsal surface of the body and the gular region uniformly black.

scholarly journals Torquenema n. g., Wallabicola n. g., and Macropostrongyloides phascolomys n. sp.: New Genera and a New Species of Nematode (Strongylida: Phascolostrongylinae) Parasitic in Australian Macropodid and Vombatid Marsupials

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 175
Author(s):  
Tanapan Sukee ◽  
Ian Beveridge ◽  
Abdul Jabbar
Keyword(s):  
New Species ◽  
Type Species ◽  
Nematode Species ◽  
Molecular Evidence ◽  
New Genera ◽  
Grey Kangaroo ◽  
Common Wombat ◽  
The Common ◽  
A New Species ◽  
Swamp Wallaby

The strongyloid nematodes belonging to the subfamily Phascolostrongylinae occur primarily in the large intestines of macropodid and vombatid marsupials. Current molecular evidence suggests that the two nematode species, Macropostrongyloides dissimilis and Paramacropostrongylus toraliformis, from macropodid marsupials are distant from their respective congeners. Furthermore, specimens of Macropostrongyloides lasiorhini from the large intestines of the southern hairy-nosed wombat (Lasiorhinus latifrons) and the common wombat (Vombatus ursinus) are genetically distinct. This study aimed to describe the new genera Torquenema n. g. (with T. toraliforme n. comb. as the type species) from the eastern grey kangaroo, Wallabicola n. g. (with W. dissimilis n. comb. as the type species) from the swamp wallaby and a new species Macropostrongyloides phascolomys n. sp. from the common wombat, using light and scanning electron microscopy.

scholarly journals Revision of Metaconchoecia (Ostracoda: Halocyprididae) and the designation of two new tribes Conchoeciini and Metaconchoeciini

Zootaxa ◽  
2011 ◽  
Vol 2857 (1) ◽  
pp. 1 ◽  
Author(s):  
VLADIMIR G. CHAVTUR ◽  
MARTIN V. ANGEL
Keyword(s):  
New Species ◽  
North Pacific ◽  
Type Species ◽  
New Genera ◽  
The North ◽  
New Tribe ◽  
The North Pacific ◽  
A New Species ◽  
Size Data ◽  
Pelagic Ostracoda

A new tribe of pelagic Ostracoda (Halocyprididae), the Metaconchoeciini, is established to encompass all the species formerly classified in the genus Metaconchoecia. All the remaining genera in the subfamily Conchoecinae are, therefore, assigned to another new tribe, the Conchoeciini. The original genus Metaconchoecia is subdivided into ten genera. Metaconchoecia is retained and nine new genera established namely: Austrinoecia, Clausoecia, Deeveyoecia, Juryoecia, Kyrtoecia, Muelleroecia, Nasoecia, Rotundoecia and Vityazoecia. Keys to these new genera and their component species are provided. Tables summarize the characters that most readily distinguish between the most closely related taxa. Appendices summarize the taxonomic characters and detailed size data for the majority of species that occur in the Atlantic and the North Pacific. A new species, Vityazoecia distoglandula, is described, which is designated as the type species of its genus.

New weevils of the tribe Scleropterini from China and Nepal (Coleoptera: Curculionidae)

2008 ◽  
Vol 17 (2) ◽  
pp. 99-107
Author(s):  
B.A. Korotyaev
Keyword(s):  
New Species ◽  
Type Species ◽  
Yunnan Province ◽  
Sichuan Province ◽  
New Genera ◽  
New Subgenus ◽  
A New Species

New genera Proscleropterus gen. n. (type species P. davidiani sp. n. from Sichuan Province, China) and Alesinus gen. n. (type species A. nepalensis sp. n. from Nepal), a new subgenus Afrutidosoma (type species Rutidosoma alexanderi sp. n. from Yunnan Province, China), and a new species Scleropterus antoni sp. n. from China (Sichuan and Gansu provinces) are described.

A new species of Tethycometes Sara 1994 (Porifera: Hadromerida: Tethyidae) from Singapore

Zootaxa ◽  
2008 ◽  
Vol 1841 (1) ◽  
pp. 65
Author(s):  
SWEE CHENG LIM ◽  
KOH SIANG TAN
Keyword(s):  
New Species ◽  
Type Species ◽  
Relative Length ◽  
The Body ◽  
Andaman Islands ◽  
Island Southeast Asia ◽  
Short Stalk ◽  
Basal Half ◽  
The Tropics ◽  
A New Species

Eight species of stalked tethyids have been described previously from the tropics (Sarà & Burlando, 1994; Van Soest et al., 2005; Sarà, 2002). These stalked species are now placed in three genera, namely, Halicometes Topsent, 1898, Burtonitethya Sarà, 1994, and Tethycometes Sarà, 1994. The three genera are distinguished principally on the relative length of the stalk in relation to the size of the hemispherical body which is attached to one end of the stalk (Sarà, 1994, 2002; Sarà & Burlando, 1994). Members of the genus Halicometes have stalks between two and four times the length of the body. Six species have been described from depths of 150–2100 m in the Atlantic and Indo-Pacific regions (Sarà, 2002). In contrast, the monotypic Burtonitethya is characterized by a short stalk that is only as long as the subspherical body. The type species B. gemmiformis Sarà, 1994 was described from the Andaman Islands from an unknown depth (Sarà, 1994, 2002). More recently, specimens collected off Java in 1900 at a depth of 82 m and possessing a long stalk eight times the length of the ovoid body were designated as type species for Tethycometes (see Sarà, 1994, 2002). This paper describes a new species of Tethycometes dredged from waters less than 15 m deep off the coast of Singapore Island, Southeast Asia. With a long stalk eight times the length of its ovoid body, it is the second species to be assigned to the recently erected genus Tethycometes. It differs from the type species T. sibogae Sarà, 1994 in the presence of oxyspherasters which form a thin but distinct cortex. It also differs from all other stalked tethyids in having a partially detached tangential skeleton surrounding the stalk, as well as in possessing rooting processes emanating from the basal half of the stalk.

The first phylogenetic study of sword-tail crickets from China inferred from COI, 18S and 28S genes, with the establishment of two new genera and description of one new species (Orthoptera: Grylloidea: Trigonidiidae)

Zootaxa ◽  
2020 ◽  
Vol 4890 (1) ◽  
pp. 119-128
Author(s):  
ZHU-QING HE ◽  
CHU-ZE SHEN ◽  
XUE WU
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Phylogenetic Study ◽  
New Genera ◽  
Type Specimens ◽  
Normal University ◽  
One New Species ◽  
Mitochondrial Fragment ◽  
A New Species

The phylogenetic tree of Chinese Trigonidiinae species was reconstructed based on one mitochondrial fragment (COI) and two nuclear ribosomal loci (18S and 28S). According to the concatenated trees, we define four genus groups with high nodal supports. The subgenus Paratrigonidium should be upgraded to genus status. A new genus Abstrigonidium He gen. nov. is established and Paratrigonidium chloropodum is selected as type species (A. chloropodum comb. nov.). Amusurgus (Paranaxipha) fujianensis is moved to genus Sectus as S. fujianensis comb. nov. A new species named as Emerasoma curvicerca He gen. et sp. nov. is reported. It differs from other genera by asymmetric genitalia, and lacking stridulatory files and mirror. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU). 

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