Canadian species of the genus Helicotylenchus Steiner, 1945 (Nematoda: Hoplolaimidae), their identifying characteristics and descriptions of three new species

1974 ◽  
Vol 52 (11) ◽  
pp. 1365-1381 ◽  
Author(s):  
R. V. Anderson
Keyword(s):  
New Species ◽  
Diagnostic Value ◽  
Closely Related Species ◽  
Lateral Field ◽  
New Information ◽  
Gland Duct ◽  
Three New Species ◽  
Labial Disc ◽  
Dorsal Gland ◽  
Head Skeleton

Descriptions, illustrations, distribution, and host affiliations are presented for 12 species of spiral nematodes that occur in Canada, including 3 new species. The only bisexual species, H. cornurus n. sp., is distinguishable from closely related species with a rounded head and ventral tail projection by the development of the head skeleton, length of the spear, width of the lateral field, spicula dimensions, and annulation of the tail terminus, which typically is indented. A prominent labial disc in H. phalerus n. sp. is one of the more important characters that distinguishes it from closer relatives. H. teleductus n. sp. is unique in the posterior position of the dorsal gland duct terminus (14 to 17 μ from the spear knobs) and of the excretory pore, which is well posterior to the esophagointestinal valve. Ranges in dimensions and form within the remaining Canadian species complement other descriptions and provide new information of diagnostic value. A key is presented to facilitate separation of the Canadian species.

scholarly journals A new root-knot nematode, Meloidogyne vitis sp. nov. (Nematoda: Meloidogynidae), parasitizing grape in Yunnan

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0245201
Author(s):  
Yanmei Yang ◽  
Xianqi Hu ◽  
Pei Liu ◽  
Li Chen ◽  
Huan Peng ◽  
...  
Keyword(s):  
New Species ◽  
Rapid Identification ◽  
Root Knot Nematode ◽  
Morphometric Traits ◽  
Head Region ◽  
Root Knot Nematodes ◽  
Lateral Field ◽  
Sequence Characterized Amplified Region ◽  
Second Stage ◽  
Labial Disc

An unknown root-knot nematode was found at high density on grape roots collected from Yunnan Province. Morphometric traits and measurements, isozyme phenotypes, and molecular analysis clearly differentiated this nematode from previously described root-knot nematodes. This new species is described, illustrated and named Meloidogyne vitis sp. nov. The new species can be distinguished from other Meloidogyne spp. by a unique combination of characters. Females display a prominent neck, an excretory pore is located on the ventral region between 23rd and 25th annule behind lips, an EP/ST ratio of approximately 2.5 (1.98–2.96), a perineal pattern with two large and prominent phasmids, and a labial disc fused with the medial lips to form a dumbbell-shaped structure. Males display an obvious head region, a labial disc fused with the medial lips to form a dumbbell-shaped structure, no lateral lips, a prominent slit-like opening between the labial disc and medial lips, a distinct sunken appearance of the middle of the medial lips, and four incisures in the lateral field. Second-stage juveniles are characterized by a head region with slightly wrinkled mark, a labial disc fused with the medial lips to form a dumbbell-shaped structure, a slightly sunken appearance of the middle of the medial lips, a slit-like amphidial openings between the labial disc and lateral lips, and four incisures in the lateral field. The new species has rare Mdh (N3d) and Est phenotypes (VF1). Phylogenetic analysis based on ITS1-5.8S-ITS2, D2D3 fragments of rDNA, and coxI and coxII fragments of mtDNA sequences clearly separated the new species from other root-knot nematodes, and the closest relative was Meloidogyne mali. Meloidogyne mali was collected for amplifying these sequences as mentioned above, which were compared with the corresponding sequences of new species, the result showed that all of these sequences with highly base divergence (48–210 base divergence). Moreover, sequence characterized amplified region (SCAR) primers for rapid identification of this new species were designed.

Three new species of narrowly endemic snapping shrimp, genusAlpheus(Decapoda: Caridea: Alpheidae) from the Persian Gulf

2018 ◽  
Vol 99 (4) ◽  
pp. 911-920 ◽  
Author(s):  
Amir Dehghani ◽  
Alireza Sari ◽  
Reza Naderloo
Keyword(s):  
New Species ◽  
Persian Gulf ◽  
Species Group ◽  
Colour Pattern ◽  
Closely Related Species ◽  
The Third ◽  
Rock Crevice ◽  
Three New Species ◽  
Snapping Shrimps ◽  
The Persian Gulf

AbstractThree new species of snapping shrimps of the genusAlpheusare described from the Persian Gulf. These belong to theAlpheus edwardsiispecies-group, which is mainly characterized by unarmed orbital hoods and the presence of dorsal and ventral notches on the palm of the major chela.Alphus ankerisp. nov. shows a close affinity toA. pacificusDana, 1852 andA. heronicusBanner & Banner, 1982 bearing no balaeniceps crests in both sexes on the dactylus of the minor chela, and the merus of the major chela of both sexes are unarmed. This species differs from the closely related species by the absence of an overhanging proximal shoulder in the major chela. The other rock crevice inhabiting species,A. mohammadpourisp. nov. is diagnosed by exhibiting sexual dimorphism in its balaeniceps crests and the armed merus of the major chela. These two characters are similar to those recorded for three sandy/rubble dwelling species:A. inopinatusHolthuis & Gottlieb, 1958,A. lobidensDe Haan, 1849 andA. australiensisBanner & Banner, 1982. This new species is distinguishable from these latter species by the shape of the minor chela and colour pattern. A coral inhabiting speciesA. abumusasp. nov. appears to be closely related toA. maindroniCoutière, 1898, showing an armed merus of the major chela and the absence of spine-like seta on the ischia of the third legs. This last new species is easily discriminated fromA. maindroniby longer antennular segments, a markedly concave frontal margin between the rostrum and orbital hood, and a different colour pattern.

Terrestrial planarians (Platyhelminthes, Tricladida, Terricola) from the Iberian Peninsula: new records and description of three new species

Zootaxa ◽  
2008 ◽  
Vol 1739 (1) ◽  
pp. 1 ◽  
Author(s):  
MIQUEL VILA-FARRÉ ◽  
EDUARDO MATEOS ◽  
RONALD SLUYS ◽  
RAFAEL ROMERO
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
New Records ◽  
Economic Interest ◽  
Distribution Maps ◽  
Local Diversity ◽  
New Information ◽  
Present Distribution ◽  
Three New Species

Little is known about the taxonomy and distribution of terrestrial planarians on the Iberian Peninsula. Few studies have tried to investigate the local diversity of these animals, due to both their lack of economic interest and their low abundance. In this study we have made extensive searches and collections of terrestrial planarians from the Iberian Peninsula, thus gathering new information on their taxonomy and biogeography. The study includes the description of three new species of the genus Microplana, viz. Microplana aixandrei sp. nov., Microplana grazalemica sp. nov., and Microplana gadesensis sp. nov. We present distribution maps summarizing published and new records of land planarians. The present work substantially increases our knowledge on this group of animals in Spain and Portugal and at the same time also evidences the scarcity of data and studies on the biology of these organisms.

New species and new distributional records of Neotropical Mantispidae (Insecta: Neuroptera)

Zootaxa ◽  
2018 ◽  
Vol 4413 (2) ◽  
pp. 295 ◽  
Author(s):  
ADRIAN ARDILA-CAMACHO ◽  
ARLEY CALLE-TOBÓN ◽  
MARTA WOLFF ◽  
LIONEL A. STANGE
Keyword(s):  
Species Richness ◽  
New Species ◽  
First Record ◽  
New Information ◽  
Neotropical Fauna ◽  
Three New Species ◽  
First Time

The Neotropical fauna of Mantispidae is currently composed of 106 species. We provide new distributional records of Mantispidae from Colombia and Panama. Three new species are described, one in Symphrasinae from Colombia, and two in Mantispinae from Colombia and Panama. Haematomantispa nubeculosa (Navás, 1933) and Leptomantispa axillaris (Navás, 1908) are reported from Colombia for the first time, the former being the first record of the genus in the country. New locality records for other species previously known from Colombia are also given. For Panama, we report Anchieta fasciatella (Westwood, 1867) and Trichoscelia iridella (Westwood, 1867) for the first time, the former is herein newly transferred from Plega to Anchieta. Three names Mantispa confluens Navás, 1914, n. syn., Buyda apicata Navás, 1926, n. syn., and Mantispa neotropica Navás, 1933, n. syn., are here synonymized with Buyda phthisica (Gerstaecker, 1885). Updated keys for the genera of Mantispinae, and species of genera Trichoscelia, Buyda, and Climaciella from Colombia are included. With this new information, the known species richness of Mantispidae from Colombia increases from 21 to 26, and from 16 to 19 species in Panama. 

Three new species of the genus Tylenchorhynchus Cobb, 1913 (Tylenchidae: Nematoda) from Canada

1969 ◽  
Vol 47 (4) ◽  
pp. 563-567 ◽  
Author(s):  
Liang-Yu Wu
Keyword(s):  
New Species ◽  
Related Species ◽  
Tail Length ◽  
The Body ◽  
Posterior Half ◽  
Closely Related Species ◽  
Three New Species

Three new species of the genus Tylenchorhynchus Cobb, 1913 from Canada are named and described. Tylenchorhynchus irregularis n. sp. differs from all closely related species in the irregular width of the cuticular annulation, especially in the posterior half of the body. T. longus n. sp. is similar to T. superbus Allen, 1955 but differs from this species in relative tail length and annulation of the tail terminus. T. laminatus n. sp. resembles T. leptus Allen, 1955 but differs in the details of the lip region, spear length, and laminated annules.

Morphology and description of Helicotylenchus crassatus n. sp. (Nematoda: Hoplolaimidae) from eastern Canada

1973 ◽  
Vol 51 (11) ◽  
pp. 1195-1200 ◽  
Author(s):  
R. V. Anderson
Keyword(s):  
Related Species ◽  
Diagnostic Value ◽  
Eastern Canada ◽  
Closely Related Species ◽  
Parasitic Species ◽  
Head Skeleton ◽  
Vaginal Sphincter ◽  
Plant Parasitic

A new plant parasitic species of the genus Helicotylenchus Steiner, 1945, common to eastern Canada, is described and illustrated. Helicotylenchus crassatus can be distinguished from closely related species by the sclerotization of the head skeleton, size and position of the anterior cephalid, and thickness of the vagina. The morphology and diagnostic value of the head skeleton, hypodermal commissures, vulva, vagina, vaginal sphincter, and oviduct are discussed.

An aberrant nematode, Baldwinema n. gen. (Nematoda: Panagrolaimomorpha: Panagrolaimidae), from Iran with description of three new species

Nematology ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 877-896 ◽  
Author(s):  
Mohammad Reza Atighi ◽  
Ebrahim Pourjam ◽  
Wim Bert ◽  
Majid Pedram ◽  
Razieh Ghaemi ◽  
...  
Keyword(s):  
New Species ◽  
New Genus ◽  
Tail Length ◽  
Thick Wall ◽  
Thin Wall ◽  
Pharyngeal Bulb ◽  
Lateral Field ◽  
Female Tail ◽  
Three New Species ◽  
Male Genital

A new genus of Panagrolaimidae, together with three new species, is proposed based on morphological, morphometric and molecular studies. Baldwinema n. gen. is unique in the Tylenchina by a combination of the following characters: having valvular median bulb, no valve in terminal pharyngeal bulb and absence of stylet. It is further characterised by cylindrical body, thin and finely annulated cuticle, lateral field with two lines (forming a single plain band), fused lips, small longitudinal amphidial openings located on lateral lips, lip region without labial probolae, with six inner and six outer labial and four cephalic papillae (as seen using SEM images), stoma aberrant, cheilostom and gymnostom of equal length, cheilostom with thin wall, gymnostom with clear and thick wall, and stegostom beginning with a tubular thin wall and ending with a thicker wall. Baldwinema ilamense n. gen., n. sp., the type, is characterised by its short post-vulval uterine sac of 7.7 (6.0-9.0) μm long, female tail length of 147 (120-175) μm, shape of gubernaculum, and arrangement of male genital papillae; B. ardabilense n. gen., n. sp. by its short post-vulval uterine sac of 11.5 (9.0-15.0) μm, female tail length of 150 (136-169) μm, shape of gubernaculum, and arrangement of male genital papillae; and B. golestanense n. gen., n. sp. by its long post-vulval uterine sac of 16 (13-21) μm, female tail length of 200 (174-220) μm, shape of gubernaculum, and arrangement of male genital papillae. Phylogenetic analyses based on sequences of the small subunit (SSU) ribosomal RNA gene showed that the new genus is nested within the Panagrolaimidae. However, LSU data did not demonstrate monophyly of the Panagrolaimidae.

scholarly journals Taxonomic study on the photid amphipods (Senticaudata, Corophiida, Photoidea, Photidae) from Korean waters, with descriptions of a new genus and seven new species

ZooKeys ◽  
2019 ◽  
Vol 886 ◽  
pp. 1-59
Author(s):  
Tae Won Jung ◽  
Charles Oliver Coleman ◽  
Seong Myeong Yoon
Keyword(s):  
New Species ◽  
New Genus ◽  
Posterior Lobe ◽  
Closely Related Species ◽  
Korean Waters ◽  
The Family ◽  
Three New Species ◽  
First Time ◽  
A New Species ◽  
Japan And China

In this paper, seven new species of the family Photidae from Korean waters are described and illustrated in detail. Among them, Exiliphotis petilasp. nov. is a monotype of the newly reported Exiliphotisgen. nov., which is characterized by slenderer and more elongate pereopods 5–7 than those of other genera of the family Photidae. The genus Latigammaropsis is reported for the first time from Korean waters based on the description of Latigammaropsis careocavatasp. nov., which is differentiated from other Gammaropsis group by having weakly sexual dimorphic gnathopods 2, those have simple palmar margins in both sexes. Three new species of Photis are also described: Photis broncasp. nov., Photis posterolobussp. nov., and Photis longicarpussp. nov. The formerly misidentified Photis longicaudata from Japan and China as well as the Korean material could be classified as a new species, P. broncasp. nov. For that, the syntypes of P. longicaudata were re-examined, and lectotype and paralectotypes were newly designated in this study. Photis broncasp. nov. is characterized by quadrate tooth on the palmar margin medially on gnathopod 2 in both sexes. Photis posterolobussp. nov. shows a pointed posterior lobe on the ischium and a well-developed process of the propodus on male gnathopod 2. Photis longicarpussp. nov. can be distinguished from other species of the genus by very elongate carpus of male gnathopod 1. Two new species belonging to the genus Podoceropsis are also reported: Podoceropsis insinuomanussp. nov. has a strongly bisinuous palmar margin on male gnathopod 2, and Podoceropsis pseudoclavapessp. nov. differs from the closely related species of Podoceropsis clavapes by different shape of the palmar margin and shorter dactylus of male gnathopod 2. Additionally, a key to the Korean species of Photidae is provided.

scholarly journals Three new species of soil-inhabiting Trichoderma from southwest China

MycoKeys ◽  
2018 ◽  
Vol 44 ◽  
pp. 63-80 ◽  
Author(s):  
Min Qiao ◽  
Xing Du ◽  
Zhe Zhang ◽  
JianPing Xu ◽  
ZenFen Yu
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Elongation Factor ◽  
Gene Encoding ◽  
Translation Elongation ◽  
Closely Related Species ◽  
Encoding Gene ◽  
Three New Species ◽  
Elongation Factor 1 ◽  
Nuclear Rna Polymerase

Fungi in the genus Trichoderma are widely distributed in China, including in Yunnan province. In this study, we report three new soil-inhabiting species in Trichoderma, named as T.kunmingense, T.speciosum and T.zeloharzianum. Their colony and mycelial morphology, including features of asexual states, were described. For each species, their DNA sequences were obtained from three loci, the internal transcribed spacer (ITS) regions of the ribosomal DNA, the translation elongation factor 1-α encoding gene (tef1) and the gene encoding the second largest nuclear RNA polymerase subunit (rpb2). Our analyses indicated that the three new species showed consistent divergence amongst each other and from other known and closely related species. Amongst the three, T.speciosum and T.kunmingense belong to the Viride Clade. Specifically, T.speciosum is related to three species – T.hispanicum, T.samuelsii and T.junci and is characterised by tree-like conidiophores, generally paired branches, curved terminal branches, spindly to fusiform phialides and subglobose to globose conidia. In contrast, T.kunmingense morphologically resembles T.asperellum and T.yunnanense and is distinguished by its pyramidal conidiophores, ampulliform to tapered phialides, discrete branches and ovoidal, occasionally ellipsoid, smooth-walled conidia. The third new species, T.zeloharzianum, is a new member of the Harzianum Clade and is closely associated with T.harzianum, T.lixii and T.simmonsii but distinguished from them by having smaller, subglobose to globose, thin-walled conidia.

New feather mite species (Acari, Astigmata) from the Sulphur-crested Cockatoo Cacatua galerita and Yellow-crested Cockatoo C. sulphurea (Psittaciformes, Cacatuidae)

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Jacek Dabert ◽  
Agnieszka Badek ◽  
Maciej Skoracki
Keyword(s):  
New Species ◽  
Related Species ◽  
Mite Species ◽  
New Genera ◽  
Feather Mites ◽  
Closely Related Species ◽  
Type Host ◽  
Close Affinity ◽  
Three New Species ◽  
Additional Support

AbstractTwo new genera and three new species of feather mites (Astigmata, Pterolichoidea, Analgoidea) are described from two closely related species of cockatoos, Cacatua galerita (type host) and C. sulphurea (Psittaciformes, Cacatuidae): Astrolabelichus caudatus gen. nov., sp. nov. (Pterolichidae), Psittophagus lacunosus sp. nov. (Pterolichidae), and Cacatualges microdiscus gen. nov., sp. nov. (Xolalgidae). The presence of the same set of mite species on these two species of parrots points to a very close affinity of Cacatua sulphurea and C. galerita and gives additional support for the recent hypothesis of the conspecificity of these birds.

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