01088nas a2200169   4500008004100000020001400041245007400055210006900129300001200198490000700210520059000217100001800807700001200825700001900837700001600856856004600872       1996                        eng d  a1164-557100aStudy of the genus Xiphidorus Monteiro, 1976 (Nematoda: Longidoridae)0 aStudy of the genus Xiphidorus Monteiro 1976 Nematoda Longidorida  a207-2250 v193 aAn extensive survey of longidorids in Argentina resulted in the collection of numerous populations pertaining to various species of Xiphidorus. Their study provides additional information on each of them and thus enlarges our knowledge of intraspecific variation. Nematodes studied are: X. amazonensis, X. balcarceanus, X. saladillensis, X. yepesara, X. achalae, and X. minor. X. tucumanensis is proposed as a junior synonym of X. balcarceanus and X. parthenus as a subspecies, X. yepesara parthenus n. grad., besides X. yepesara yepesara. A key to the species and subspecies is given.1 aDecraemer, W.1 aLuc, M.1 aDoucet, M., E.1 aCoomans, A.  uhttps://nematodes.myspecies.info/node/25501546nas a2200169   4500008004100000020001400041245011400055210006900169260001200238300001200250490000700262520100800269100001801277700001901295700001601314856004601330       1998                        eng d  a1164-557100aLongidoridae from Argentina with the description of Paraxiphidorus brevistylus sp n (Nematoda : Longidoridae)0 aLongidoridae from Argentina with the description of Paraxiphidor  cJul-Aug  a371-3880 v213 aParaxiphidorus brevistylus sp.n. is described based on male, female, and juvenile specimens from uncultivated soil in Argentina. The new species is characterized by the short odontostyle, the comparatively anterior position of the guide ring, and a combination of body length, lip region width, and number of ventromedian supplements similar to those of P. michelluci and ratios a and c, spicule length, and length of lateral guiding pieces similar to those of P. heynsi. Additional information is provided on Xiphidorus minor, Xiphinema surinamense, and X. krugi. The reproductive system (structure of the uteri) of Argentinean females of X, surinamense was somewhat different from earlier descriptions: in the posterior branch, the proximal part of the uterus is well differentiated from a narrower strongly developed muscular median uterus filled with spiniform crystalloid structures; in the anterior branch, the uterus is long, glandular, and not clearly differentiated. (C) Orstom/Elsevier, Paris.1 aDecraemer, W.1 aDoucet, M., E.1 aCoomans, A.  uhttps://nematodes.myspecies.info/node/23002256nas a2200193   4500008004100000020001400041245007600055210006900131300001200200490000700212520170300219100001201922700001901934700001701953700001701970700001801987700001202005856004502017       2010                        eng d  a1388-554500aUsefulness of morphological data for the study of nematode biodiversity0 aUsefulness of morphological data for the study of nematode biodi  a495-5040 v123 aPublic interest in biodiversity has never been so high, but the necessary inventory of existing species is hindered by the scarcity of taxonomists able to characterise and describe new species (alpha-taxonomy). This situation is particularly worrisome in nematology where only a small fraction of the estimated 10(5) to 10(8) existing species has been described and where experienced taxonomists are fast disappearing while the few that are still active find it increasingly difficult to publish morphological descriptions and to get financial support for biodiversity studies. The present disregard for alpha-taxonomy is said to originate from the excessive reliance by funding agencies and academic authorities on the Impact Factors attributed to scientific journals by ISI (Institute for Scientific Information). Molecular studies gave back some support and prestige to taxonomy, but that approach suffers from some limitations and it cannot be used alone for reaching taxonomic conclusions. In addition, any described DNA sequence should always be linked to a named species whose morphology has been correctly described by a trained taxonomist. The authors call for a renewed interest in alpha-taxonomy. Electronic publication according to the Code of Zoological Nomenclature would be one solution, but journals and authors seem reluctant to accept it. A variant would be to publish on paper only the diagnosis of the new species. The complete descriptions could be deposited in an Internet database but the setting-up of such a database would be a costly enterprise that would require several years of work by a team composed of morphological and molecular taxonomists and computer scientists.1 aLuc, M.1 aDoucet, M., E.1 aFortuner, R.1 aCastillo, P.1 aDecraemer, W.1 aLax, P.  uhttps://nematodes.myspecies.info/node/94