Description of Bathynema nodinauti gen. n., sp. n. and four new Trophomera species (Nematoda: Benthimermithidae) from the Clarion-Clipperton Fracture Zone (Eastern Tropic Pacific), supplemented with the keys to genera and species

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 173-196 ◽  
Author(s):  
DMITRY M. MILJUTIN ◽  
MARIA A. MILJUTINA

Seven specimens of the family Benthimermithidae from the Clarion-Clipperton Fracture Zone (Eastern Tropic Pacific), from the depths 4,800–5,040 m, were examined. Bathynema nodinauti gen. et sp. n. is described. The new genus differs from other genera of Benthimermithidae by the presence of an inner pharyngeal lumen. Four new species of Trophomera are also described. Body length of female of T. elegantis sp. n. approximately 1.5 mm; body cylindrical, anterior and posterior ends in shape of rounded cone; cephalic setae 2.0–2.5 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/6 of total body length; ovaries reflected; diameter of mature eggs 17 μm; males not found. Body length of female of T. minutissima sp. n. 0.9 mm; body cylindrical, with thickest body part at anterior half of body; anterior and posterior ends rounded; cephalic setae 1.5 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/3 of total body length; ovaries reflected; size of mature eggs 24x23 μm; males not found. Body length of female of T. pacifica sp. n. 5.4 mm; body cylindrical, anterior end rounded; posterior end conical, with thick conical terminal spine 81 μm long, showing granular core; cephalic setae 2.5 μm long inserted in tiny pits; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 2/3 of total body length; ovaries outstretched; size of mature eggs 34x20 μm; males not found. Body length of female of T. senckenbergi sp. n. 1.6 mm; body fusiform; anterior and posterior ends in shape of a cone with rounded tip; cephalic setae 2 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/6 of total body length; ovaries non-reflected; males not found. The new finding of T. marionensis is recorded. One rest specimen (in bad condition) of a new species is described as a morphotype. A dichotomous key to the genera of the Benthimermithidae and tabular keys to Trophomera species are presented.

Zootaxa ◽  
2011 ◽  
Vol 2783 (1) ◽  
pp. 1 ◽  
Author(s):  
MARINA V. MALYUTINA

Two new species of deep sea asellotes of the family Munnopsidae, Rectisura slavai sp. nov. and Storthyngura yuzhmorgeo sp. nov. are described from the manganese nodules area in the Clarion-Clipperton Fracture Zone of the Pacific Ocean. The discovery of these new species allowed re-examination of the taxonomic position of two similar species, Storthyngura ? intermedia (Beddard, 1885) from the Northeastern Basin of the Pacific Ocean and Ilyarachna defecta Menzies & George, 1972 from the Peru-Chile Trench, eastern Pacific Ocean. The species are moved to the genera Rectisura Malyutina, 2003 and Storthyngura Vanhöffen, 1914, respectively. Additional composition and distribution of the species of the genera are presented.


Zootaxa ◽  
2018 ◽  
Vol 4375 (1) ◽  
pp. 136
Author(s):  
CHUNSHENG WANG ◽  
YUAN ZHANG ◽  
BO LU ◽  
DEXIANG WANG

The new Hexactinellid sponge Chaunoplectella megapora sp. nov. reported in this study was collected from the COMRA contract area, the western part of Clarion-Clipperton Fracture Zone (CCFZ) in the eastern Pacific Ocean at a depth of 5258 m. This sponge’s extraordinary multiporous body with the presence of unique codonhexasters, sigmatocomes, toothed discohexasters and hemidiscohexasters, as well as stellate disocohexasters, characterizes it as a new species in the genus Chaunoplectella. This report presents the first record of family Leucopsacidae at this site in the eastern Pacific Ocean. 


Nematology ◽  
2006 ◽  
Vol 8 (4) ◽  
pp. 563-574 ◽  
Author(s):  
Maurice Moens ◽  
Sergei Spiridonov ◽  
Aihua Yan ◽  
Shulong Chen ◽  
Xiuhua Li

AbstractA new species of Steinernema (Rhabditida), S. hebeiense sp. n. was isolated from sandy soil, Hebei Province, China. Diagnostic characters of infective juveniles of S. hebeiense sp. n. include total body length of 658 (610-710) μm, distance from anterior end to excretory pore of 48 (43-51) μm, tail length of 66 (63-71) μm, and E% ratio of 72 (65-80). The lateral field has eight ridges at the mid-body region (two very thin submarginal ridges, poorly discernible under light microscope, but visible in SEM); and the anterior end is slightly offset and flattened. First generation males have a body length of 1177 (1036-1450) μm, spicule length = 57 (51-63) μm, and gubernaculum length = 46 (38-50) μm. The spicules are light brown in colour and slightly curved; the manubrium is longer than wide. A tail mucron is present in second generation males. These morphometrical and morphometric features classify S. hebeiense sp. n. within the ' feltiae-kraussei-oregonense ' group. Molecular data also classify the new species within this group. Within this group, the smallest differences between the sequences of S. hebeiense sp. n. is with S. weiseri – 73 bp in the ITS rDNA and 13 bp in the studied partial sequence of the D2D3 expansion segment of LSU rDNA.


Zootaxa ◽  
2013 ◽  
Vol 3609 (1) ◽  
pp. 49-59 ◽  
Author(s):  
KARTIKA DEWI ◽  
HARRY W. PALM

Based on light and scanning electron microscopy, two new species of philometrid nematodes, Spirophilometra endangae sp. nov. and Philometra epinepheli sp. nov. (Nematoda: Dracunculoidea: Philometridae) are described from Epinephelus coioides (Hamilton, 1822) (Perciformes: Serranidae) from the South Bali Sea, Indonesia. Spirophilometra endangae sp. nov. was isolated from the fins of E. coioides. The new species can be distinguished from the most closely related S. eichleri Parukhin, 1971 by a larger total body length and the site of infection in the host. The new species differs from S. centropomi (Caballero, 1974) also in the larger body size of the gravid females and the site of infection in the host. S. en-dangae sp. nov. differs from S. pacifica (Moravec, Santana-Pineros, Gonzales-Solis & Torres-Huerta, 2007) in the struc-ture and arrangement of the spines on the middle part of the body, the infection site of the worm, the type host and the zoogeographical host distribution. Philometra epinepheli sp. nov. differs from all other Philometra spp. congeners so far recorded from Ephinepelus groupers in the total body length and the site of infection. This is the first opercula-infecting species of Philometra described from the fish family Serranidae.


Acarina ◽  
2019 ◽  
Vol 27 (2) ◽  
pp. 229-232
Author(s):  
Maciej Skoracki ◽  
Sergey V. Mironov ◽  
Sergio Bermúdez

A new quill mite species, Syringophilopsis bochkovi sp. n. (Acariformes: Syringophilidae), is described from two species of manakins (Passeriformes: Pipridae), Corapipo altera (type host) and Manacus vitellinus collected in Panama. Females of the new species differ from those of morphologically similar S. nitens Skoracki et Dabert, 2001 by the following features: the total body length is 960–1,010 µm (vs. 1,265–1,285 µm in S. nitens); the dorsal shields (propodonotal, hysteronotal and pygidial) and coxal fields I–IV are apunctate (vs. all these sclerites are punctate); each lateral branch of the peritremes has 11 chambers (vs. 13 chambers); and the lengths of dorsal idiosomal setae d2 and e2 are 330–350 and 330–370 µm, respectively (vs. 390–400 and 420–460 µm). Syringophilopsis bochkovi represents the first record of the family Syringophilidae on passerines of the family Pipridae.


Zootaxa ◽  
2008 ◽  
Vol 1895 (1) ◽  
pp. 66-68
Author(s):  
SHAUN L. WINTERTON

Scenopinidae are a small family (ca. 300 species) of asiloid flies distributed on all continents except Antarctica. This family is closely related to Therevidae (Stiletto flies) based on the secondarily segmented characteristic of their larvae. Scenopinids are typically very small flies, frequently less than 5 mm total body length.


Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 137-172 ◽  
Author(s):  
DMITRY M. MILJUTIN ◽  
MARIA A. MILJUTINA

The description of six species of family Microlaimidae (Nematoda), from 5,000 m depth at the Clarion-Clipperton Fracture Zone (North-Eastern Tropic Pacific), is given. Three previously described species (Microlaimus discolensis Bussau et Vopel, 1999; M. porosus Bussau et Vopel, 1999; and Caligocanna mirabilis Bussau et Vopel, 1999) were found about 5200 km far from the area where the type specimens were originally discovered (the Peru Basin, South-East Pacific). Of the new species, Aponema martinezi sp. n. is closest to two other Aponema species, A. minutissima Kovalyov and Miljutina, 2008 and A. nanum (Blome, 1982). However, it differs from them in having a non-set-off head, amphids located quite far from the non-annulated cephalic capsule, and by possessing the gubernaculum with the apophysis. Microlaimus abyssalis sp. n. belongs to a group of Microlaimus species with dorsocaudal apophyses of gubernaculum. It differs from other four Microlaimus species which have apophyses of similar shape (M. crassiceps Gerlach, 1953; M. decraemerae (Muthumbi & Vincx, 1999); M. mnazi (Muthumbi & Vincx, 1999); and M. undulates Gerlach, 1953) by lacking of supplementary precloacal organs in males and some other body parameters. Microlaimus parviporosus sp. n. possesses four submedian rows of pores along its entire body length. In this feature it resembles three other Microlaimus species (M. cyatholaimoides de Man, 1922; M. discolensis Bussau and Vopel, 1999; and M. porosus Bussau and Vopel, 1999). The new species differs from M. cyatholaimoides and M. porosus by the ratio of the length of the outer labial setae and of the cephalic setae (approximately of equal length in the new species vs. the much longer cephalic setae in two latter species) as well as some other parameters. The new species differs from M. discolensis by its shorter head setae of two rings (1.2 μm vs. 6–9 μm) and some other parameters.


Nematology ◽  
2013 ◽  
Vol 15 (5) ◽  
pp. 601-609 ◽  
Author(s):  
Jianfeng Gu ◽  
Jiangling Wang ◽  
Xianfeng Chen

Bursaphelenchus koreanus sp. n., isolated in Ningbo, P.R. China, from packaging wood made from Pinus sp. imported from South Korea, is described. It is characterised by a slim body (a = 28-35), lateral field with four lines, excretory pore located at level of, or slightly posterior to, median bulb, vulva at 75% of total body length, presence of a distinct vulval flap in lateral view, post-uterine branch extending for ca two-thirds of vulva-anus distance, female tail conical and ventrally bent with slightly pointed, irregular or roughened terminus (c′ = 4.1), spicules large and arcuate (27-34 μm) with pointed rostrum, cucullus visible but sometimes reduced to a small blunt extension. The new species belongs to the xylophilus group and is most similar to B. luxuriosae and B. paraluxuriosae. It is distinguished from other Bursaphelenchus species by morphology, ITS-RFLP patterns and sequencing results.


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