scholarly journals Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean

2013 ◽  
Author(s):  
Daniel Leduc
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Water Depth ◽  
Nematode Species ◽  
Valid Species ◽  
Free Living ◽  
Southwest Pacific ◽  
The Family ◽  
Two New Species ◽  
Free Living Nematode

Two new species of the family Trefusiidae, viz., Trefusia piperata sp. nov. and Trefusialaimus idrisi sp. nov., are described from the crest of the Chatham Rise, Southwest Pacific Ocean (350 m water depth). The present study provides the first species records for this family in the region. Trefusia and Trefusialaimus comprise twenty and three valid species, respectively. A key to males of Trefusia is provided.

Two new free-living nematode species of the family Xyalidae from the Laizhou Bay of the Bohai Sea, China

Zootaxa ◽  
2019 ◽  
Vol 4614 (2) ◽  
pp. 383 ◽  
Author(s):  
YAN SUN ◽  
YONG HUANG ◽  
HONGSHUO TANG ◽  
YU ZANG ◽  
HUI XIAO ◽  
...  
Keyword(s):  
New Species ◽  
Bohai Sea ◽  
Small Body ◽  
Nematode Species ◽  
Laizhou Bay ◽  
Free Living ◽  
The Bohai Sea ◽  
The Family ◽  
Two New Species ◽  
Free Living Nematode

Two new species of the family Xyalidae from the Laizhou Bay of the Bohai Sea, China are described and illustrated herein. Daptonema papillifera sp. nov. is characterized by relatively small body size, L-shaped spicules with a large cephalate proximal end, triangular gubernaculum with a dorsal apophysis, 5–6 conjoint precloacal cuticularized spines and two ventral papillae located at the middle of the tail. Daptonema papillifera sp. nov. is easily distinguished from the other species in this genus by having 5–6 conjoint precloacal cuticularized spines and two ventral caudal papillae. Pseudosteineria anteramphida sp. nov. is characterized by eight groups of long subcephalic setae located posterior to amphideal fovea, curved slender spicules with cephalate proximal end and tapered distal end, tubular gubernaculum without apophysis, precloacal supplements absent, and a short precloacal seta present. In comparison with its most similar congeneric species, P. ventropapillata Tchesunov, 2000 the new species differs in having smaller body, not jointed cephalic setae, absence of precloacal supplements and absence of gubernacular apophysis.

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. 

One new genus and two new free-living nematode species (Desmodorida, Desmodoridae) from the continental margin of New Zealand, Southwest Pacific Ocean

Zootaxa ◽  
2013 ◽  
Vol 3609 (3) ◽  
pp. 274-290 ◽  
Author(s):  
DANIEL LEDUC ◽  
DOMINICK VERSCHELDE
Keyword(s):  
New Zealand ◽  
New Genus ◽  
Buccal Cavity ◽  
Nematode Species ◽  
Head Capsule ◽  
Valid Species ◽  
Free Living ◽  
The Family ◽  
Free Living Nematode ◽  
First Time

One new genus and two new species of the family Desmodoridae are described from the upper continental slope of New Zealand, at 350–1240 m water depths. Onepunema gen. n. is characterised by a striated head capsule, small buccal cavity without teeth, and presence of two testes. Onepunema gen. n. can be differentiated from all other genera of the family by the presence of two testes, which is an exception to the holapomorphic character (i.e. monorchic males) of the Desmodoroidea. Onepunema enigmaticum gen. et sp. n. shares characters typical of the subfamilies Spiriniinae (small buccal cavity without distinct teeth) and Desmodorinae (presence of head capsule). Onepunema gen. n. is placed within the Desmodorinae based on the latter trait, which is never found within the Spiriniinae. The type species, Onepunema enigmaticum gen. et sp. n., is characterised by the presence of two laterodorsal and two lateroventral rows of pores with conspicuous ducts, slender pharynx with rounded terminal bulb, presence of two types of cells in intestinal epithelium, and presence of four or five pre-cloacal supplements consisting of thickened areas of cuticle in males. The genus Pseudonchus is recorded for the first time from the deep sea (1240 m water depth) and from the New Zealand region. Pseudonchus virginiae sp. n. is characterised by its stout body, short cephalic setae, monospiral amphideal fovea, short arcuate spicules with capitulum, five regularly-spaced precloacal setae, and short conical tail. A key to all known valid species of the genus Pseudonchus is provided.

Four new species of free-living marine nematodes of the family Comesomatidae (Nematoda: Araeolaimida) from coast of Vietnam

Zootaxa ◽  
2013 ◽  
Vol 3608 (7) ◽  
pp. 547-560 ◽  
Author(s):  
VLADIMIR G. GAGARIN
Keyword(s):  
New Species ◽  
Littoral Zone ◽  
Nematode Species ◽  
Valid Species ◽  
Marine Nematodes ◽  
Free Living ◽  
The Family ◽  
Coast Of Vietnam ◽  
Amphidial Fovea

Specimens of four new nematode species of the family Comesomatidae were isolated from the sediments of littoral zone of South China Sea at the coast of Vietnam and described and illustrated. Sabatieria curvispiculata sp. n. is characterized by the long and slender tail, short cephalic setae and strongly curved spicules in males. Setosabatiera orientalis sp. n. is close to S. australis Riera, Nunez, Brito, 2006, but differs from it in the comparatively shorter and more slender tail, small-er number of amphidial fovea turns, greater number of precloacal supplements in males and shape and structure of spic-ules. Dorylaimopsis intermedia sp. n. is morphologically closest to D. mediterranea Grimaldi-de Zio, 1968 and D. magellanense Chen, Vincx, 1968, but differs from both species in the longer outer labial setae and absence of precloacal supplements in males. D. brevispiculata sp. n. is similar to D. turneri Zhang, 1992 and D. coomansi Muthumbi, Soetaert, Vincx, 1977, but differs from both species in the shape of outer labial sensillae and absence of precloacal supplements in males. A pictorial key for determination of valid species in the genus Setosabatieria Rouville, 1903 is given.

scholarly journals Two new species of Microcotyle (Monogenea: Microcotylidae) on intertidal fish from the south Pacific coast

2020 ◽  
Vol 54 (3) ◽  
pp. 283
Author(s):  
Gabriela Muñoz ◽  
Mario George-Nascimento
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Valid Species ◽  
Base Pairs ◽  
Central Chile ◽  
South Central ◽  
The Pacific ◽  
The Family ◽  
Two New Species ◽  
Intertidal Fish

Microcotyle is one of the most diverse and controversial genera within the family Microcotylidae. To date, 131 species have been described in Microcotyle; however, more than half have been transferred to other genera, and several others have poor descriptions. Therefore, less than half of all Microcotyle species may be considered valid. In Chile, two species have been recognized, and unidentified Microcotyle have been found on several littoral fish, but there has been no effort to properly identify them. In this study, two new species of Microcotyle are taxonomically described from intertidal fish of the central (33°S) and south-central (36°S) regions of Chile. In this study, Microcotyle sprostonae n. sp. (collected mainly from Scartichthys viridis in central Chile) and M. chilensis n. sp. (collected mainly from Calliclinus geniguttatus in south-central Chile) were identified based on morphological and molecular analyses (ITS2 and 18S genes). Both species of Microcotyle principally differed from one another and from other valid species in the number of testes and clamps. The two new species also differed from one another by one base pair in the ITS2 and 18S genes and differed from other species of Microcotyle by several base pairs of both genes. Intertidal fish are mostly endemic to the Pacific coast of South America, and they have a limited geographical distribution that does not overlap with the type hosts of other Microcotyle species. Therefore, the two new species described here are distinguished from other congeneric species by morphological, genetic, and biological characteristics.

Three new species of copepods (Copepoda: Calanoida and Cyclopoida) from anchialine habitats in Indonesia

Zootaxa ◽  
2012 ◽  
Vol 3150 (1) ◽  
pp. 36 ◽  
Author(s):  
GEOFF A. BOXSHALL ◽  
DAMIÀ JAUME
Keyword(s):  
New Species ◽  
The Philippines ◽  
The Other ◽  
Valid Species ◽  
Fine Scale ◽  
The Family ◽  
Two New Species ◽  
Three New Species ◽  
The Village ◽  
A New Species

Three new species of copepod crustaceans are described from material collected from anchialine and brackish habitats inand around the village of Walengkabola on the coast of Muna Island, to the southeast of Sulawesi. A new species of cy-clopoid, Paracyclopina sacklerae n. sp., was described from material collected from the tidal inflow entering into the bot-tom of sinkholes a few metres inland from the shoreline. Detailed comparisons are made with Paracyclopina orientalis(Lindberg, 1941), n. comb., a closely related congener here transferred from its original genus Cyclopetta Sars, 1913. Theassignment of Paracyclopina Smirnov, 1935 to the family Cyclopettidae is followed here despite uncertainty over the va-lidity of some of the families created by the break up of the former Cyclopinidae. Two new species of Boholina Fosshagen& Iliffe, 1989 are described, based on material from the same sinkholes and from caves located up to 700m inland fromthe coast and exhibiting further reduced salinity down to 1.8 ppt. One species, B. parapurgata n. sp., is very closely relatedto B. purgata Fosshagen & Iliffe, 1989 from Bohol island in the Philippines, the other B. munaensis n. sp., is very closelyrelated to B. crassicephala Fosshagen & Iliffe, 1989 also from Bohol island, but a number of fine scale differences in the leg 5 of both sexes are recognised in each case. Keys to valid species of both genera are provided.

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. 

Two new nematode species, Linhystera breviapophysis and L. longiapophysis (Xyalidae, Nematoda), from the East China Sea

2014 ◽  
Vol 94 (3) ◽  
pp. 515-520 ◽  
Author(s):  
Tingting Yu ◽  
Yong Huang ◽  
Kuidong Xu
Keyword(s):  
New Species ◽  
East China Sea ◽  
Nematode Species ◽  
East China ◽  
The East China Sea ◽  
Free Living ◽  
China Sea ◽  
Dichotomous Key ◽  
Two New Species ◽  
Emended Diagnosis

Two new species of free-living nematodes discovered from the sediments in the East China Sea are described: Linhystera breviapophysis sp. nov. and L. longiapophysis sp. nov. Both species possess a dorso-caudally directed gubernacular apophysis, which makes them distinctly different from the two already known species of Linhystera. Linhystera breviapophysis is characterized by a gubernacular apophysis about 3.3 μm long, the presence of a crown of cervical setae and a filiform tail. Linhystera longiapophysis is characterized by a prominent gubernacular apophysis about 10 μm long, sparse cervical setae and a long filiform tail. An emended diagnosis of Linhystera and a pictorial dichotomous key to the species are given.

Two new species of the whip-spider genus Heterophrynus (Arachnida: Amblypygi) with complementary information of four species

Zootaxa ◽  
2020 ◽  
Vol 4803 (1) ◽  
pp. 1-41
Author(s):  
DANIEL CHIRIVI-JOYA ◽  
JAIRO A. MORENO-GONZÁLEZ ◽  
GIOVANNY FAGUA
Keyword(s):  
New Species ◽  
Species Recognition ◽  
Valid Species ◽  
Complementary Information ◽  
Complete Work ◽  
The Family ◽  
Two New Species ◽  
Morphologic Variation ◽  
First Time ◽  
Male Genital

The family Phrynidae has been mainly recorded from America, including the Antilles, and Heterophrynus is one of its genera endemic of South America and is mainly associated with Amazonian ecosystems. Currently, the genus has 16 valid species, but many original descriptions are ambiguous or incomplete. The more complete work about this genus only includes seven of the currently valid species, and in some cases, some characters useful for the species identification, were not described. This situation hampers the species recognition and the comparison among species to propose diagnosis accurate. Using characters from the male and female genitalia to improve the diagnosis, we present complementary descriptions for four species of Heterophrynus and describe two new species. We present details of morphologic variation, compare the pedipalp spines among the species, present actualized distributions, and for first time, we present a complete illustration of the male genital of eight species using SEM pictures. 

Two new species of free-living nematodes genera Microlaimus de Man, 1880 and Aponema Jensen, 1978 (Nematoda: Microlaimidae) from the Black Sea

Zootaxa ◽  
2017 ◽  
Vol 4344 (2) ◽  
pp. 387 ◽  
Author(s):  
TATIANA N. REVKOVA
Keyword(s):  
New Species ◽  
Black Sea ◽  
The Body ◽  
The Black Sea ◽  
Head Region ◽  
Free Living ◽  
Pharyngeal Bulb ◽  
The Family ◽  
Two New Species ◽  
De Man

Two new species of the family Microlaimidae Micoletzky, 1922 are described and illustrated from the Black Sea. Aponema pontica sp. n. is morphologically closest to A. torosum in the shape of the body and spicules, size of amphids, but differs in having small and triangular cardia, absence of constriction in head region, shape of gubernaculum apophyses, rounded and weakly sclerotised lumen of pharyngeal bulb and longer spicules. Microlaimus paraglobiceps sp. n. morphologically resembles M. globiceps de Man, 1880 in the shape of the body, structure of the male sexual organs and presence of precloacal pore, but the main difference is a shorter body, cuticle finely annulated all over the body and absence of sexual dimorphism in the size of amphideal fovea. 

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