@article {718, title = {Dracograllus trukensis sp nov (Draconematidae: Nematoda) from a seagrass bed (Zostera spp.) in Chuuk Islands, Micronesia, Central Western Pacific Ocean}, journal = {Ocean Science JournalOcean Science Journal}, volume = {51}, number = {3}, year = {2016}, note = {Min, Wongi Kim, Dongsung Decraemer, Wilfrida Rho, Hyun Soo}, month = {Sep}, pages = {343-354}, abstract = {A new species of free-living marine draconematid nematode, Dracograllus trukensis sp. nov., is described based on the specimens collected from the sediments of a intertidal seagrass bed from Chuuk Islands, Micronesia. Dracograllus trukensis sp. nov. differs from other species of the genus by the combination of the following characteristics: the presence of numerous minute spiny ornamented body cuticular annules in both sexes, eight cephalic adhesion tubes inserted on the head capsule in both sexes, the presence of stiff posteriorly directed setae anterior to posterior adhesion tubes in both sexes, the shape (large, elongated, open loop-shaped in male and large, elongated, closed loop-shaped in female) and position (longer ventral arm extending to the first body annule in male) of amphideal fovea, shorter spicule length (34-42 mu m), the presence of sexual dimorphism in shape and length of the non-annulated tail terminus, and number of posterior sublateral adhesion tubes (10 in male and 13-15 in female) and posterior subventral adhesion tubes (8-10 in male and 9-11 in female). A comparative table on the biogeographical and ecological characteristics of the species of Dracograllus is presented. This is the first taxonomic report on the genus Dracograllus from Chuuk Islands, Micronesia, central western Pacific Ocean.}, isbn = {1738-5261}, author = {Min, W. and Kim, D. and Decraemer, W. and Rho, H. S.} } @article {89, title = {Prochaetosoma dokdoense sp nov (Nematoda: Draconematidae) from Dokdo, Korea: First record of the genus Prochaetosoma from a shallow subtidal zone in the northwest Pacific Ocean}, journal = {Marine Biology ResearchMarine Biology Research}, volume = {6}, number = {2}, year = {2010}, note = {Rho, Hyun Soo Min, Won Gi Decraemer, Wilfrida Kim, Dong Sung}, pages = {172-188}, abstract = {A draconematid nematode Prochaetosoma dokdoense sp. nov., first discovered in December 2006 at a subtidal zone of Dokdo, Korea, the northwest Pacific Ocean, is described. This new species was obtained from coarse detritus and shell gravels. Prochaetosoma dokdoense sp. nov. differs from all the species hitherto described by the following combination of characteristics: longer slender body (910-1175 mu m), elongate loop-shaped amphidial fovea in male (distal end of ventral arm slightly curved anteriorly), eight cephalic adhesion tubes in both sexes positioned just anterior to swollen pharyngeal region, number of posterior sublateral adhesion tubes (6 in male and 6-10 in female) and posterior subventral adhesion tubes (7-8 in male and 8-9 in female), longer spicule length (78-86 mu m), long cylindro-conoid tail (114-131 mu m in male and 116-131 mu m in female) and higher ratio c{\textquoteright} (6.5-7.5 in male and 7.4-9 in female). A table comparing the major differential diagnostic characteristics of the species of the genus Prochaetosoma Micoletzky, 1922 is presented. For a reliable understanding of the geographic distribution and species identification of the genus Prochaetosoma, a pictorial key showing the relative length of non-annulated tail terminus to total tail length in both sexes is included, together with a dichotomous species identification key based on adults and fourth-stage juvenile as far as known. This is the first record of the genus Prochaetosoma in the northwest Pacific Ocean.}, isbn = {1745-1000}, author = {Rho, H. S. and Min, W. G. and Decraemer, W. and Kim, D. S.} } @article {78, title = {Megadraconema cornutum, a new genus and species from Korea, with a discussion of its classification and relationships within the Family Draconematidae (Nematoda, Desmodorida) based on morphological and molecular characters}, journal = {Zoological ScienceZoological Science}, volume = {28}, number = {1}, year = {2011}, note = {Rho, Hyun Soo Decraemer, Wilfrida Sorensen, Martin Vinther Min, Won Gi Jung, Jongwoo Kim, Won}, month = {Jan}, pages = {68-84}, abstract = {A new genus and species of Draconematidae Filipjev, 1918, Megadraconema cornutum gen. nov., sp. nov., inhabiting subtidal sediments in Jejudo, Korea is described. Megadraconema cornutum gen. nov., sp. nov. is mainly characterized by a long body (1630-2220 mu m), presence of a transverse circle of well-developed papillae-like cuticular protrusions at the base of the lip region, a head capsule with reticular structure of subcuticle, an amphid with a pore-like opening, and an internal, bar-shaped fovea. The diagnosis of the family Draconematidae is emended and a key to genus is provided based on their major differential diagnostic characteristics, summarized in a table. Phylogenetic relationships of all the genera within the Draconematidae are discussed for the first time, based on molecular analyses and morphological features. The phylogenetic position of the new genus and relationships within the family Draconematidae based on analysis of molecular sequence data are examined. Analysis of 18S rRNA gene sequences does not support the currently accepted classification, and indicates paraphyly of the subfamily Draconematinae.}, isbn = {0289-0003}, author = {Rho, H. S. and Decraemer, W. and Sorensen, M. V. and Min, W. G. and Jung, J. and Kim, W.} }