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.

New species of Thoonchus (Enoplida, Enchelidiidae) from the Yellow Sea and redescription of T. giganticus Belogurova et al., 1986

Zootaxa ◽  
2020 ◽  
Vol 4845 (2) ◽  
pp. 239-252
Author(s):  
JULIA K. ZOGRAF ◽  
OLGA N. PAVLYUK ◽  
YULIA A. TREBUKHOVA ◽  
LI BAOQUAN
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Yellow Sea ◽  
Buccal Cavity ◽  
Critical Evaluation ◽  
The Body ◽  
The Yellow Sea ◽  
Valid Species ◽  
Proximal Extension ◽  
Northern Yellow Sea

The family Enchelidiidae is recovered as monophyletic and appears to be a more recently derived taxon within the superfamily Oncholaimoidea. It combines nematodes with buccal cavity with three unequal teeth, crenate pharynx, and absence of demanian system. Genus Thoonchus was erected for nematodes characterized by the large buccal cavity with heavily cuticularized walls and several rows of denticles, short and arcuate spicules and gubernaculums with expanded corpus. One new species is described here from the Sishili Bay, located in the northern Yellow Sea. Thoonchus covidus sp. nov. is characterized by the body length 3195‒4339 µm, outer labial and cephalic setae in one circle, pocket shaped amphid above the buccal cavity base, secretory-excretory pore at the base of cephalic setae, arched spicules, gubernaculum with thin proximal extension parallel to spicules, preanal supplement absent, three pairs of preanal papillae. It differs from other congeners by the position of secretory-excretory pore, absence of supplementary organ in males and presence of three pairs of precloacal papillae. Redescription of T. giganticus is also provided. After critical evaluation of the genus we recognize 4 valid species and provide a taxonomic key to species. 

Two new species of Metachromadora (Nematoda: Desmodoridae) from Guanabara Bay, Rio de Janeiro, Brazil, and a revised dichotomous key to the genus

2013 ◽  
Vol 94 (1) ◽  
pp. 105-114
Author(s):  
Tatiana F. Maria ◽  
Nic Smol ◽  
André M. Esteves
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Rio De Janeiro ◽  
Valid Species ◽  
Guanabara Bay ◽  
Key To Species ◽  
Dichotomous Key ◽  
Two New Species ◽  
Amphidial Fovea

Two new species of Metachromadora are described from Bananal and Bica beaches in Guanabara Bay on the coast of Rio de Janeiro, Brazil. Both new species belong to the subgenus Bradylaimus, which is characterized by the absence of lateral alae. Metachromadora prepapillata sp. nov. is characterized by the presence of 8–9 precloacal papilliform supplements, while Metachromadora verae sp. nov. is characterized by the sexual dimorphism of the amphidial fovea, presence of 8–9 precloacal tubuliform supplements, and three postcloacal papillae. An updated dichotomous key to species of Metachromadora is proposed. Metachromadora asupplementa is reinstated as a valid species.

­On two new species of Nannopus Brady, 1880 (Copepoda: Harpacticoida: Nannopodidae) from intertidal mudflats of the Korean west coast (Yellow Sea)

Zootaxa ◽  
2021 ◽  
Vol 5051 (1) ◽  
pp. 529-549
Author(s):  
VINOD VAKATI ◽  
WONCHOEL LEE
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Species Complex ◽  
Anterior Part ◽  
The Yellow Sea ◽  
Valid Species ◽  
Intertidal Mudflats ◽  
Two New Species ◽  
Cryptic Species Complex ◽  
Mandibular Palp

Two new species in the genus Nannopus Brady, 1880 (Copepoda: Harpacticoida) from intertidal mudflats of the Yellow Sea along the Korean peninsula, Nannopus cylindricus sp. nov. and N. robustus sp. nov., are described. Nannopus cylindricus belongs to the group of Nannopus species with seven elements on P4 exp-3. Within this group, it is closest to a cryptic species complex related to N. ganghwaensis Vakati, Kihara & Lee, 2016 based on an inflated caudal seta IV. However, N. cylindricus differs from the other species in this complex with respect to caudal seta V (inflated and heavily cylindrical at its base in N. cylindricus, inflated only in the N. ganghwaensis cryptic complex). Nannopus robustus belongs to the group of species displaying two setae on P2 enp-2. Within this group, N. robustus is closely related to N. serratus Vakati & Lee, 2017 based on the presence of one endopodal naked seta arising from a stem-like protrusion on the mandibular palp. However, N. robustus can be distinguished from N. serratus based on the following characters: outermost distal spine on P2 exp-3 (extremely strong, smooth and recurved in N. robustus, moderately strong, denticulate and normal-shaped in N. serratus, and spine 1.6 times as long in N. robustus as in N. serratus), P2 exp-2 inner seta (absent in N. robustus, present in N. serratus), shape of caudal seta V (anterior part distinctly cylindrical in N. robustus, normal-shaped in N. serratus), and ornamentation of caudal seta VI (naked in N. robustus, pinnate in N. serratus). An updated key to the 17 valid species of Nannopus is provided.  

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 Paramphimonhystrella (Nematoda, Monhysterida, Xyalidae) from the deep-sea sediments in the Western Pacific Ocean and adjacent shelf seafloor

Zootaxa ◽  
2017 ◽  
Vol 4344 (2) ◽  
pp. 308
Author(s):  
BENZE SHI ◽  
TINGTING YU ◽  
KUIDONG XU
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Water Depth ◽  
Deep Sea ◽  
Western Pacific ◽  
Valid Species ◽  
Western Pacific Ocean ◽  
Dichotomous Key ◽  
Two New Species ◽  
Deep Sea Sediments

Two new species of marine nematodes, Paramphimonhystrella longispicula sp. n. in the deep-sea sediments from the Philippine Sea in the tropical Western Pacific Ocean with the water depth of 3920–5176 m and P. eurystoma sp. n. in the shelf seafloor from the East China Sea with the water depth of 55–64 m, are described. Both species possess long and slender spicules, which are present only in the congener P. barbula, a species discovered from the continental slope of New Zealand. Paramphimonhystrella longispicula sp. n. can be easily distinguished from P. barbula by the relatively broader buccal cavity, the unequally long cervical setae and a higher number of terminal setae. Paramphimonhystrella eurystoma sp. n. is unique in having a peculiar gubernaculum with two proximal capitula and a peculiar hammer-shaped cuticularized piece posterior to vulva, by which it can be distinguished from P. longispicula sp. n. and P. barbula as well as other congeners. Paramphimonhystrella longispicula sp. n. differs from P. eurystoma sp. n. also by the number of terminal setae (4 vs. 2). A dichotomous key to nine valid species of Paramphimonhystrella is provided. 

scholarly journals Four new species of troglomorphic Coecobrya Yosii, 1956 (Collembola, Entomobryidae) from Thailand based on morphological and molecular evidence, with an updated key of Thai troglomorphic species

2021 ◽  
Vol 41 ◽  
pp. 1-42
Author(s):  
Areeruk Nilsai ◽  
Matsapume Detcharoen ◽  
Nerivania Nunes Godeiro ◽  
Sopark Jantarit
Keyword(s):  
New Species ◽  
Large Body ◽  
Nuclear Gene ◽  
The Body ◽  
Valid Species ◽  
Species Discrimination ◽  
Molecular Evidence ◽  
Orange Pigment ◽  
Unique Character ◽  
Dichotomous Key

Four new species of troglomorphic Coecobrya Yosii, 1956 are described from caves located in the central and northeastern regions of Thailand. Coecobrya whittenisp. nov. and C. troglobiasp. nov. are from Khon Kaen province, C. ellisisp. nov. is from Phetchabun province and C. phitsanulokensissp. nov. is from Phitsanulok province. They all exhibit remarkable troglobitic characters i.e. elongated antennae, legs and furca, slender claw complex and large body size. Coecobrya whittenisp. nov. is similar to C. troglobiasp. nov. and they were found a distance of only 3.4 km from each other. However, they are mainly different in the number of An mac on dorsal head and number of chaetae of Th. II. Likewise, C. ellisisp. nov. is similar to C. phitsanulokensissp. nov.. However, they differ in the number of An mac on the dorsal head, the number of central mac on Abd. II, central mac on Abd. IV, lateral mac on Abd. IV and the number of inner teeth of the claw. Moreover, C. ellisisp. nov. has orange pigment dots on the body, a unique character, considering that all other troglomorphic Coecobrya species in Thailand are devoid of pigmentation. The results of the molecular approach based on two partial mitochondrial markers (COI and 16S rDNA) and a nuclear gene fragment (28S rDNA) supported the results of morphological species discrimination in separating the four nominal populations as valid species. An updated dichotomous key of Thai troglomorphic Coecobrya species is also 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.

Worldwide revision of the genus Phaenoglyphis (Hymenoptera, Cynipoidea, Figitidae, Charipinae)

2019 ◽  
Vol 50 (2) ◽  
pp. 235-296 ◽  
Author(s):  
Mar Ferrer-Suay ◽  
Jesús Selfa ◽  
Noel Mata-Casanova ◽  
Nicolas Pérez Hidalgo ◽  
Juli Pujade-Villar
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Characters ◽  
Type Material ◽  
Valid Species ◽  
Key To Species ◽  
World Species ◽  
Incertae Sedis ◽  
The World ◽  
Two New Species

A complete revision of the world species of the genus Phaenoglyphis Förster, 1869 has been conducted. A total of 25 species of Phaenoglyphis are valid after studying their type material. Two new species are described: Phaenoglyphis belizini sp. n. and Phaenoglyphis palmirae sp. n. Two species are synonymized: P. dolichocera (Cameron, 1889) with P. nigripes (Thomson, 1877) and P. pecki Andrews, 1978 with P. villosa (Hartig, 1841). Phaenoglyphis bangalorensis Kurian, 1953 was considered as incertae sedis. Phaenoglyphis duplocarpentieri (Kieffer, 1904) and P. hedickei Hedicke, 1928 are considered lost. Other three species are discarded as valid species because they are missing important parts without which the species cannot be defined: P. cincta (Hartig, 1841), P. frigidus (Belizin, 1968) and P. repentinus Belizin, 1962. A complete redescription and an illustrative plate are presented. A key to species of the genus Phaenoglyphis is given. Phylogenetic analysis based on morphological characters has been performed.

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