The genus Paradorylaimus Andrássy, 1969 (Nematoda: Dorylaimida) with description of three new species from Ecuador

Zootaxa ◽  
2012 ◽  
Vol 3302 (1) ◽  
pp. 25 ◽  
Author(s):  
LARA ORSELLI ◽  
MIRELLA CLAUSI ◽  
MARIA TERESA VINCIGUERRA
Keyword(s):  
New Species ◽  
Female Body ◽  
Morphometric Parameters ◽  
Natural Environments ◽  
Male Tail ◽  
Female Tail ◽  
Three New Species

Three new species of Paradorylaimus Andrássy, 1969, found in moss and litter of natural environments of Ecuador aredescribed. P. andinus sp. n. is characterized by 1.65–2.26 mm long female body, lip region set off by a depression, odontostyle26.5–32. 5 μm long and 3.0–4.5 µm wide; pre-rectum 1.1–2.4 anal body diameters long in female and 1.2–2.3 in male; 0–3 pre-vulval and 0–5 postvulval papillae; spicules 60–80 µm long; 13–14 ventral supplements; female tail elongate-filiform, 6–10anal body diameters long; male tail short, 0.7–1 cloacal body diameters long, dorsally convex, with a marked ventral concavityand blunt terminus. P. longicaudatus sp. n. is characterized by 1.78–2.14 mm long female body, lip region slightly set off by adepression, odontostyle 30–32.5 μm long and 2.0–3.5 µm wide; pre-rectum 1.3–2.3 anal body diameters long in female and 2–3.5 in male; paravulval papillae absent; spicules 44.5–62.5 µm long; 11–13 ventral supplements; female tail elongate-filiform,11–16 anal body diameters long; male tail short, 0.8–0.9 cloacal body diameters long, convex conoid, with blunt terminus. P.flagellicaudatus sp. n. is characterized by 1.65–1.73 mm long female body, lip region continuous, odontostyle 19–24 μm longand 2–2.5 µm wide; pre-rectum 1.8–2.6 anal body diameters long in female and 2.4 in male; spicules 45 µm long; 10 ventralsupplements; female tail elongate-filiform, 25–26 anal body diameters long; male tail short, conoid, 0.8 cloacal body diameterslong. The authors support the validity of the genus Paradorylaimus, provide an updated diagnosis and furnish a compendium of the main morphometric parameters of its species and a key to them.

Nematodes of the order Rhabditida from Andalucía Oriental, Spain. The genus Ablechroiulus Andrássy, 1966 with description of three new species and a key to species

Nematology ◽  
2009 ◽  
Vol 11 (1) ◽  
pp. 77-94
Author(s):  
Reyes Peña-Santiago ◽  
Joaquín Abolafia
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Body Length ◽  
Identification Key ◽  
Anterior Region ◽  
Key To Species ◽  
Male Tail ◽  
Female Tail ◽  
Three New Species ◽  
Se Iberian Peninsula

AbstractThree new species of the genus Ablechroiulus are described from natural areas in the SE Iberian Peninsula. Ablechroiulus castaneanus sp. n. is characterised by a body length of 0.69-0.80 mm in females and 0.58-0.76 mm in males, lip region offset by a shallow constriction and with six rounded lips bearing setae, stoma 18-20 μm long, metacorpus cylindrical, vulva prominent with high lips, female tail (45-52 μm, c = 12.5-15.6, c′ = 2.5-2.7) divided into two distinct regions, phasmid at base of anterior region of tail, male tail (39-63 μm, c = 12.1-14.8, c′ = 2.6-2.7) with posterior filiform part and acute terminus, bursa leptoderan with nine pairs of papillae (1 + 2 + 1 + 2 + 3), spicules 21-25 μm long and gubernaculum 10-15 μm long. Ablechroiulus querquetulanus sp. n. is characterised by a body length of 1.2-1.5 mm in females and 1.4 mm in male, stoma 24-31 μm long, procorpus 1.5 times longer than metacorpus, female tail filiform (262-318 μm, c = 4.2-4.7, c′ = 9-11), male tail (180-228 μm, c = 6.2-7.8, c′ = 3.8-5.4) with very long posterior filiform part, bursa leptoderan with nine pairs of papillae (1 + 2 + 1 + 2 + 1 + 2) of which papillae 2-3 and 5-6 are fused at base, spicules 63-72 μm long and fused at terminus and gubernaculum 32-46 μm long. Ablechroiulus verminosus sp. n. is characterised by a body length of 0.76-1.10 mm in females and 0.83-0.97 mm in males, lip region with six rounded lips bearing three setae on each side, stoma 18-26 μm long, female tail filiform (88-167 μm, c = 6.6-8.7, c′ = 5.0-7.1), male tail (63-81 μm, c = 11.0-13.3, c′ = 2.7-3.2) with posterior filiform part, bursa leptoderan with nine pairs of papillae (1 + 2 + 1 + 2 + 3) of which papillae 5-6 are fused at base, spicules 29-42 μm long, and gubernaculum 10-24 μm long. SEM pictures are provided for A. verminosus sp. n. An identification key to species of the genus as well as a tabular compendium are also provided.

Description of Acrolobus longigubernaculum sp. n. (Nematoda, Rhabditida, Cephalobidae) from Iran, the second species of the genus

Zootaxa ◽  
2012 ◽  
Vol 3407 (1) ◽  
pp. 61
Author(s):  
NEGIN AMIRZADI ◽  
EBRAHIM SHOKOOHI ◽  
ALI ESKANDARI ◽  
JOAQUÍN ABOLAFIA
Keyword(s):  
New Species ◽  
Type Species ◽  
Soil Nematodes ◽  
New Taxon ◽  
Male Tail ◽  
Spicule Length ◽  
Female Tail ◽  
Body Diameter ◽  
Conical Bearing ◽  
A New Species

A new species of the genus Acrolobus was recovered during a survey of soil nematodes. Acrolobus longigubernaculumsp. n., collected from the rhizosphere of weeds in northeastern Iran, is described and illustrated. It is characterized by abody length of 0.72–0.98 mm in females and 0.73–0.84 mm in males, annulated cuticle, lateral fields with three longitu-dinal incisures, lip region slightly offset from the neck and 8–11μm wide, lips leaf-like, stoma 12–16 µm long, pharyngealcorpus 2.7–3.2 times isthmus length, vulva located slightly posterior to middle of body (V = 61–65), spermatheca 26–46µm long, postuterine sac 27–49 µm long or 0.9–1.3 times the corresponding body diameter, female tail conical with a fine,short mucro (47–58 µm, c = 13.9–18.5, c’ = 2.4–3.2), male tail conical bearing a fine mucro (47–50 µm, c = 14.8–17.5;c’ = 2–2.3), spicules 26–30μm long and ventrally curved, and gubernaculum 12–16 µm long (50% of spicule length). The new taxon is the second species of the genus Acrolobus and is compared to the type species, A. emarginatus.

Two new species of Mesacanthion Filipjev, 1927 (Nematoda: Enoplida) from the Mediterranean Sea

Nematology ◽  
2006 ◽  
Vol 8 (4) ◽  
pp. 533-538 ◽  
Author(s):  
Alexander Klerman ◽  
Vladimir Gagarin
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Female Body ◽  
Nematode Species ◽  
Male Tail ◽  
Two New Species ◽  
The Mediterranean ◽  
The Right

AbstractTwo new nematode species of the genus Mesacanthion, M. obscurum sp. n. and M. propinquum sp. n., both isolated from sediment in the Mediterranean Sea off the coast of Israel, are described and illustrated. Mesacanthion obscurum sp. n. is similar to M. diplechma and M. southerni, but differs from the first species by having a narrower labial region, shorter outer labial setae, shorter right spiculum, and shorter distance from supplement to cloacal aperture; and from the second species by a shorter female body, shorter outer labial setae, shorter distance from supplement to cloacal aperture, and the presence of a ventral protuberance on the male tail. Mesacanthion propinquum sp. n. resembles M. southerni and M. obscurum sp. n., but differs from the first species by having a shorter female body, less slender tail, narrower labial region, shorter outer labial setae, shorter distance from supplement to cloacal aperture, and absence of transverse striations on the right spicule; and from M. obscurum sp. n. by the shorter outer labial setae (10-15 vs 37-44 μm), shorter distance from supplement to cloacal aperture (28-31 vs 36-59 μm) and absence of transverse striations on the surface of the right spicule. A key is provided for those Mesacanthion species possessing anisomorphic and anisometric spicules.

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.

Nematodes of the order Rhabditida from Andalucía Oriental, Spain. The genus Cephalobus Bastian, 1865 with description of C. harpagonis sp. n. and key to species

Nematology ◽  
2009 ◽  
Vol 11 (4) ◽  
pp. 485-508
Author(s):  
Joaquín Abolafia ◽  
Reyes Peña-Santiago
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Body Length ◽  
Female Body ◽  
Identification Key ◽  
Key To Species ◽  
The South ◽  
South Eastern ◽  
Female Tail ◽  
A New Species

AbstractA new species of the genus Cephalobus is described from natural areas in the south-eastern Iberian Peninsula. Cephalobus harpagonis sp. n. is characterised by female body length of 0.38-0.47 mm, lips amalgamated in pairs, labial probolae present as low ridges connecting tips of adjacent lips, ovary lacking flexures, spermatheca 11-12 μm long, postuterine sac very short (0.3-0.4 times corresponding body diam.), female tail conical or subcylindrical (22-31 μm, c = 13.2-17.1, c′ = 1.7-2.5) and ending in a tuberculate, often harpoon-like, mucro. Descriptions, measurements and illustrations, including SEM photographs, are also provided for C. persegnis and C. troglophilus from Spain. An identification key to Cephalobus species and a compendium of their measurements are also provided.

Three new species of parasitaphelenchids, Parasitaphelenchus frontalis n. sp., P. costati n. sp. and Bursaphelenchus hirsutae n. sp. (Nematoda: Aphelenchoididae), isolated from bark beetles from Japan

Nematology ◽  
2018 ◽  
Vol 20 (10) ◽  
pp. 957-1005 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Taisuke Ekino ◽  
Tatsuya Ide ◽  
Hayato Masuya ◽  
Yousuke Degawa
Keyword(s):  
New Species ◽  
Bark Beetles ◽  
Body Cavity ◽  
The Body ◽  
Molecular Characterisation ◽  
Lateral Field ◽  
Female Tail ◽  
Alnus Hirsuta ◽  
Three New Species ◽  
Zelkova Serrata

Summary Three parasitaphelenchid species, Parasitaphelenchus frontalis n. sp., P. costati n. sp. and Bursaphelenchus hirsutae n. sp., are described. Parasitaphelenchus frontalis n. sp. was isolated from the body cavity of Scolytus frontalis emerging from dead logs of Zelkova serrata collected from Kanagawa, Japan, and characterised by its four-lined lateral field in the adults and dome-shaped lip region of the parasitic juveniles. Whereas the two first-mentioned species were isolated from Alniphagus costatus, B. hirsutae n. sp. emerged from dead logs of Alnus hirsuta collected from Nagano, Japan. Parasitaphelenchus costati n. sp. and B. hirsutae n. sp. were recovered from the body cavity and the underside of the elytra of their host/carrier beetle, respectively. Parasitaphelenchus costati n. sp. is characterised by its three-lined lateral field in adults and the presence of a ventrally-directed hook on the lip region of the parasitic juvenile. Bursaphelenchus hirsutae n. sp. belongs to the eggersi group of the genus and is characterised by its three-lined lateral field, dorsally truncate condylus and pointed rostrum of males, and long, smoothly tapering and strongly ventrally recurved, female tail. Molecular characterisation is provided for all three new species and their phylogenys discussed.

Two new insect-associated tylenchids, Sychnotylenchus hibisci n. sp. and Neoditylenchus xiphydriae n. sp. (Tylenchomorpha: Anguinidae), from Japan

Nematology ◽  
2021 ◽  
pp. 1-26
Author(s):  
Natsumi Kanzaki ◽  
Hisashi Kajimura ◽  
Hayato Masuya ◽  
Mitsuteru Akiba ◽  
Taisuke Ekino ◽  
...  
Keyword(s):  
New Species ◽  
Bark Beetle ◽  
Body Shape ◽  
Length Ratio ◽  
Male And Female ◽  
Male Tail ◽  
Spicule Length ◽  
Female Tail ◽  
Tail Shape ◽  
Tail Tip

Summary We isolated two tylenchid species belonging to the Sychnotylenchinae, Sychnotylenchus hibisci n. sp. and Neoditylenchus xiphydriae n. sp., from the bark beetle Ernoporus corpulentus and wood wasp Xiphydria ogasawarai, respectively. Sychnotylenchus hibisci n. sp. is characterised by its moderately stout body in both male and female, gubernaculum to spicule length ratio of one-third or less, crustaformeria structure composed of four columns with six large, rounded cells, and a broad female tail with a rounded terminus. The new species is closely related to S. ulmi, with which it shares body shape and gubernaculum to spicule length ratio, but is distinguished by the female tail shape and several morphometric values. Neoditylenchus xiphydriae n. sp. is characterised by its oval to leaf-shaped male bursa, male tail tip reaching the distal end of, and protruding beyond the bursa, a long post-vulval uterine sac (PUS), and a conical female tail with a narrowly rounded terminus. The species is typologically similar to N. pinophilus but is distinguished by its male spicule shape, gubernaculum to spicule length ratio, and longer PUS. Phylogenetically, the Sychnotylenchinae belongs under the Anguinidae (superfamily Sphaerularioidea) and is closely related to several Ditylenchus, Neotylenchus, Neomisticius, and Ficotylus species.

A revision of the Iponematinae (Nematoda: Drilonematoidea) with description of three new species parasitic in tropical earthworms

Nematology ◽  
2011 ◽  
Vol 13 (6) ◽  
pp. 639-652 ◽  
Author(s):  
Birger Neuhaus ◽  
Elena Ivanova
Keyword(s):  
New Species ◽  
Species Identification ◽  
Morphological Analysis ◽  
The Other ◽  
Pharyngeal Bulb ◽  
Female Tail ◽  
Three New Species

AbstractThe Iponematinae is revised based on the morphological analysis of known and newly described species. Globocephalonema is restored to accommodate three former Iponema species: G. krishnanii, G. hyderabadense and G. timmae. Emended generic diagnoses and keys for species identification are proposed. Three new species, Filiponema javanicum sp. n., F. cylindropharyngatum sp. n. and Tonoscolecinema awakubianum sp. n., parasitic in earthworms deposited in the collection of the Museum für Naturkunde Berlin, are described and illustrated. Filiponema javanicum sp. n. is closest to F. sarmathicum but is distinguished by its smaller amphids, a cylindroid vs clavate pharynx, the absence of genital sensilla with rounded bases and short bristle in the centre, the lack of somatic sensilla in males, and a differently shaped gubernaculum. From the other three species of the genus, it clearly differs by a rounded vs pointed tail in both sexes. Filiponema cylindropharyngatum sp. n. differs from its congeners by the uniquely short and slim pharynx and fewer eggs with more elongated, finely tuberculate vs smooth, ovoid eggshells. Tonoscolecinema awakubianum sp. n. differs by the presence of a pre-corpal bulb-like pharyngeal swelling, a glandular pharyngeal bulb, a gradually tapering vs conical female tail and cuticularised rectum in females.

Paractinolaimus persicus sp. n. (Nematoda: Actinolaimidae) from Iran 

Zootaxa ◽  
2019 ◽  
Vol 4551 (2) ◽  
pp. 244
Author(s):  
HADI PANAHI ◽  
EBRAHIM SHOKOOHI ◽  
MARIA T VINCIGUERA ◽  
MIRELLA CLAUSI ◽  
PHATU. W. MASHELA
Keyword(s):  
New Species ◽  
Male Tail ◽  
Line Drawings ◽  
Wild Grass ◽  
Female Tail ◽  
Reproductive Apparatus ◽  
A New Species

A new species of the genus Paractinolaimus, namely, Paractinolaimus persicus sp. n., is described. It is characterised by body 2.3–2.6 mm long; low, truncate lip region; four massive, acute onchia; stoma walls covered with sparse tiny denticles; odontostyle 25–28 μm long; well developed, didelphic-amphidelphic female reproductive apparatus; vulva a longitudinal oval pore; absence of advulval papillae; female tail 146–224 µm long (c’ = 3.3–5.9), elongated filiform, curved ventrad, and with acute terminus; male tail convex conoid with blunt terminus; and 17–18 nearly contiguous ventromedian supplements. This species was recovered from the rhizosphere of wild grass. Line drawings, LM and SEM photographs and measurements are provided. 

Description of Stegelletina lingulata sp. n. (Nematoda, Rhabditida, Cephalobidae) from xeric environments in Iran

Zootaxa ◽  
2017 ◽  
Vol 4358 (3) ◽  
pp. 462
Author(s):  
JOAQUÍN ABOLAFIA ◽  
EBRAHIM SHOKOOHI
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Small Body ◽  
Reproductive Systems ◽  
Lateral Field ◽  
Male Tail ◽  
Line Drawings ◽  
Female Tail ◽  
Body Diameter ◽  
A New Species

A new species belonging to the genus Stegelletina, S. lingulata sp. n., is described from xeric natural areas from Iran. It is characterized by having small body (0.51–0.69 mm in females and 0.45–0.64 mm in males), cuticle slightly tessellated especially at anterior end, lateral field with three longitudinal incisures, lips with long acute process at primary axils and three more dentate processes at secondary axils, primary axils with one triangular axillar guard process and secondary axils lacking axillar processes, labial probolae long (9–11 µm) with slender peduncle lacking adaxial expansion and with convergent smooth prongs, stoma, pharynx and reproductive systems cephaloboid, excretory pore at isthmus level, spermatheca 1.1–1.4 times, and post-vulval sac 0.9–1.2 times the corresponding body diameters in length, female rectum 0.6–0.8 times anal body diameter long, female tail conoid (35–47 µm long, c = 14.0–15.6, c' = 2.1–2.7) with fine rounded terminus, male tail conoid, curved ventrad (53–59 µm long, c = 11.0–12.0, c' = 1.9–2.5) with rounded terminus, spicules 31–33 µm long with ventrally straight manubrium and gubernaculum 14–17 µm long. Measurements and illustrations (line drawings, LM and SEM) are provided for this species. In addition, comments on the morphology of the lip region of the species of the genus Stegelletina are included. 

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