Two new species of the genus Elzalia (Nematoda: Monhysterida: Xyalidae) from the Yellow Sea, China

2006 ◽  
Vol 86 (5) ◽  
pp. 1047-1056 ◽  
Author(s):  
Y. Zhang ◽  
Z.N. Zhang
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Small Body ◽  
Large Body ◽  
The Yellow Sea ◽  
Marine Nematodes ◽  
Free Living ◽  
Head Diameter ◽  
Body Diameter ◽  
Two New Species

Two new species of free-living marine nematodes of the genus Elzalia, Elzalia gerlachi sp. nov. and Elzalia striatitenuis sp. nov. from the Yellow Sea, China, are described and illustrated. Elzalia gerlachi sp. nov. is characterized by relatively large body length (1540–1740 μm in males; 1510–1780 μm in females), spicules 135–160 μm (3.33–3.90 anal body diameter) and complex gubernaculum. Elzalia striatitenuis sp. nov. is characterized by rather small body size (560–660 μm in males; 570–630 μm in females), short cephalic setae 2.5 μm long (21.4–31.3% of head diameter), spicules 65–85 μm (4.06–4.67 anal body diameter) and relatively simple gubernaculum. The two new species can be distinguished from other species of the genus by length and structure of spicules and gubernaculum. Pictorial and tabular keys to the genus are given.

Two new species of Xyalidae (Nematoda) from the Yellow Sea, China

2010 ◽  
Vol 90 (2) ◽  
pp. 391-397 ◽  
Author(s):  
Yong Huang ◽  
Zhinan Zhang
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Dorsal Side ◽  
The Yellow Sea ◽  
Marine Nematodes ◽  
Free Living ◽  
Two New Species

Two new species of free-living marine nematodes, Daptonema longiapophysis sp. nov. and Cobbia sinica sp. nov. from the Yellow Sea, China are described and illustrated. Daptonema longiapophysis sp. nov. is characterized by spicules with a projection on the ventral and dorsal side respectively and the length of the gubernacular apophysis longer than the length of spicules. Cobbia sinica sp. nov. is characterized by one big dorsal tooth, long conico-cylindrical tail and gubernaculum with a small dorsal apophysis.

Two new species of free-living marine nematodes of Adoncholaimus Filipjev, 1918 (Oncholaimida: Oncholaimidae: Adoncholaiminae) from Hokkaido, northern Japan, with a key to species and discussion of the genus

Nematology ◽  
2014 ◽  
Vol 16 (4) ◽  
pp. 437-451 ◽  
Author(s):  
Daisuke Shimada ◽  
Hiroshi Kajihara
Keyword(s):  
New Species ◽  
Buccal Cavity ◽  
Large Body ◽  
Single Pair ◽  
Marine Nematodes ◽  
Key To Species ◽  
Free Living ◽  
Two New Species ◽  
New Diagnosis ◽  
Northern Japan

Two new species of free-living marine nematodes,Adoncholaimus daikokuensissp. nov. andA. pseudofervidussp. nov., from the coastal area of northern Japan, are described and illustrated.Adoncholaimus daikokuensissp. nov. is similar to five congeners,A. derjugini,A. punctatus,A. oxyuroides,A. squaluscomb. nov. andA. filicaudacomb. nov. in the absence of a gubernaculum, but differs in the absence of a ventral swelling on tail, spicule length and buccal cavity length.Adoncholaimus pseudofervidussp. nov. is similar toA. fervidusin having large body size, short tail, similar positions of the excretory pore and nerve ring, short spicules, arrangement of subventral setae in posterior region of body in males, and a single pair of terminal pores of the Demanian system surrounded by small gland cells in females.Adoncholaimus pseudofervidussp. nov. differs fromA. fervidusin having smaller, more anteriorly located amphids, longer buccal cavity, absence of gubernaculum in the male, and a different position of the terminal pores in the female. Partial sequences of the mitochondrial cytochromecoxidase subunit I gene (309-337 bp) of the new species are provided for identification based on the DNA barcoding method.Metoncholaimoidesis proposed as a junior synonym ofAdoncholaimus. The new diagnosis ofAdoncholaimusand a key to species are provided.Adoncholaimus squaluscomb. nov.,Adoncholaimus filicaudacomb. nov., andAdmirandus papillatuscomb. nov. are proposed.

New species of free-living marine nematodes from the Yellow Sea, China

2006 ◽  
Vol 86 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Y. Huang ◽  
Z.N. Zhang
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Buccal Cavity ◽  
The Yellow Sea ◽  
Marine Nematodes ◽  
Free Living ◽  
Marine Life ◽  
Conical Section ◽  
Anterior Body ◽  
Three New Species

Three new species of free-living marine nematodes: Oncholaimus multisetosus sp. nov., Sabatieria stenocephalus sp. nov. and Setosabatieria coomansi sp. nov. from the Yellow Sea, China are described and illustrated. The male of Oncholaimus multisetosus sp. nov. is characterized by a tail sharply constricted at the junction of the conical and cylindrical sections; two circles of 12–15 pairs of circumcloacal setae each. In the female, the conical section of the tail gradually tapers in a cylindrical section. Sabatieria stenocephalus sp. nov. is characterized by the pronounced sharp-pointed anterior body, sclerotized tooth-like front edge of buccal cavity and 15 tubular-shaped precloacal supplements with the posterior five more closely spaced. Setosabatieriacoomansi sp. nov. can be separated from the other species of the genus by the number (6–8) of cervical setae per file, the number of precloacal supplements (15) and the absence of central strips in spicules and leaf-like extensions of the cuticle lateral to the cloaca. Types are deposited in the College of Marine Life Sciences, Ocean University of China.

Description of two new species from Venezuela in the highly diverse dipsadine genus Atractus (Serpentes: Colubridae)

2009 ◽  
Vol 30 (2) ◽  
pp. 233-243 ◽  
Author(s):  
Gilson Rivas Fuenmayor ◽  
Paulo Passos ◽  
Cesar Barrio-Amorós
Keyword(s):  
New Species ◽  
Body Size ◽  
Small Body ◽  
Large Body ◽  
Species Description ◽  
Small Body Size ◽  
Single Female ◽  
Large Body Size ◽  
Body Diameter ◽  
Two New Species

AbstractTwo new species of Atractus are described from Venezuela uplands and highlands on two northern Andean cordilleras. Atractus acheronius, known only from Sierra de Perijá, can be distinguished from congeners by having 17 dorsal scale rows, presence of preocular scales, seven upper and lower labials, seven maxillary teeth, 166 ventrals in the single female, 23 subcaudals, dorsum brown with small dark brown dots, large body size, huge body diameter, and small tail size. Atractus multidentatus, known only from north versant of the Cordillera de Mérida, can be distinguished from congeners by having 17 dorsal scale rows, eight upper and lower labials, 18 maxillary teeth, 153 ventrals in the single female, nine subcaudals, dorsum reddish brown with five longitudinal dark brown stripes, small body size, small body diameter, and small tail size. Additionally, a discussion concerning the species description of Atractus based on unique specimens is provided.

A new genus and new species of free-living marine nematodes from the Yellow Sea, China

2007 ◽  
Vol 87 (3) ◽  
pp. 717-722 ◽  
Author(s):  
Yong Huang ◽  
Zhinan Zhang
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Type Species ◽  
New Genus ◽  
The Yellow Sea ◽  
Marine Nematodes ◽  
Free Living ◽  
One New Species

A new genus and one new species of free-living marine nematodes Paramarylynnia gen. nov., Paramarylynnia subventrosetata sp. nov. from the Yellow Sea, China are described and illustrated. Paramarylynnia gen. nov. is characterized by a cuticle with transverse rows of even dots; absence of lateral differentiation; gubernaculum large and dilated at the distal end, no distal dentation; precloacal supplements absent; tail conico-cylindrical.The type species of Paramarylynnia gen. nov. is Paramarylynnia subventrosetata sp. nov.

Review of Onyx Cobb (Nematoda: Desmodoridae) with description of two new species from the Yellow Sea, China

2015 ◽  
Vol 95 (6) ◽  
pp. 1127-1132
Author(s):  
Yong Huang ◽  
Haixia Wang
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Small Body ◽  
The Body ◽  
The Yellow Sea ◽  
Valid Species ◽  
Dichotomous Key ◽  
The World ◽  
Two New Species ◽  
Amphidial Fovea

Genus Onyx Cobb, 1891 has been reviewed and 19 valid species including two new species have been reported in the world. Two new species, Onyx rizhaoensis sp. nov. and Onyx minor sp. nov. from the Yellow Sea coast are described and illustrated. In addition to the genus characters Onyx rizhaoensis sp. nov. has relatively long cephalic setae; a single loop-shaped amphidial fovea; 12 S-shaped tubular precloacal supplements in 10 + 2 arrangement, posterior 10 closely spaced, anterior two set apart; female vulva situated at almost midpoint of the body. Onyx minor sp. nov. is characterized by a relatively small body for the genus (body length usually shorter than 800 μm); gubernaculum slender parallel to spicules and with a hooked dorsal apophysis; 12 S-shaped tubular precloacal supplements fairly evenly spaced; female vulva situated at about midbody. At the same time, a dichotomous key for Onyx males is proposed.

Two new species of free-living marine nematodes of the family Oxystominidae Chitwood, 1935 (Enoplida) with a review of the genus Thalassoalaimus de Man, 1893 from the Argentine coast 

Zootaxa ◽  
2017 ◽  
Vol 4250 (4) ◽  
pp. 347
Author(s):  
ANTONELA MARTELLI ◽  
VIRGINIA LO RUSSO ◽  
GABRIELA VILLARES ◽  
CATALINA T. PASTOR DE WARD
Keyword(s):  
New Species ◽  
San Antonio ◽  
Marine Nematodes ◽  
San Jose ◽  
Key To Species ◽  
Free Living ◽  
Rio Negro ◽  
The Family ◽  
Two New Species ◽  
De Man

Two new free-living marine nematodes of the family Oxystominidae are described from San Antonio Bay (Río Negro) and San José Gulf (Chubut). Litinium australis sp. n., is characterized by having a rounded tail, by the first and second crown of cephalic setae with different lengths, gubernaculum with apophysis and by the presence of at least four precloacal papillae; Thalassoalaimus nestori sp. n., is characterized by having a conical tail, cephalic setae equal in length, gubernaculum with rounded and dorso-caudally directed apophysis and two precloacal papillae. An emended diagnosis of the genus Thalassoalaimus and a key to species are given. 

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