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TheInternationalConferencesonEphemeroptera(Mayflies)andSymposiaonPlecoptera (Stoneflies)areheldeverythreeyears,indifferentpartsoftheworld. Theseeventsallow specialistsfromdifferentcountriestointeractandpresenttheresultsoftheirlatest investigations. TheIXInternationalConferenceonEphemeropteraandXillInternationalSymposiumon Plecoptera,wereheldAugust16-21,1998,andAugust20-23,1998,respectively,inTaffdel Valle,Tucuman,Argentina,withajointsymposiumonAugust20,1998. Theseeventswerehos tedbythe"InstitutoSuperiordeEntomologfa"FacultaddeCienciasNaturales,fromtheNational UniversityofTucuman,andattendedbyapproximately80specialistsfrom25countries. Atpresent,whenthebiodiversitycrisisandthepressuresonfresh-waterenvironmentsand theirinhabitantsareworsethaneverbefore,theinformation,discussionsandguidelinescoming outofeventsofthiskindarebecomingmoreandmoreimportant. The54papersincludedinthisvolumeareamongthosepresentedduringthemeetings, andacceptedafterpeerreviewbyinternationalspecialists. Thepapersaregroupedinfivelooselydefinedsections(exceptthefirstthatcorresponds toapaneldiscussion),althoughseveralofthepaperscouldexceedthesubjectboundaries wheretheyarelocated. Iwouldliketothankthemanyindividualsandinstitutionsthathelpedwithboththis bookandtheorganizationoftheevents,namely: Themembersoftheorganizingcommittee:H. R. Fernandez,M. G. Cuezzo, F. Romero, C. Molineriand C. Nieto. AlsocollaboratingwereM. Ceraolo,1. Chocobar,M. Guzmande Tome,S. Moro,M. Orce,V. Manzoandmanyvolunteersandstudentstoonumeroustodetail here. Withouttheiruntiringefforts,theeventssimplywouldnothavebeenpossible. Thefollowingpersonsactedasmanuscriptreviewers:J. Alba-Tercedor,J. V. Arnekleiv, R. Baumann,J. E. Brittain, 1. C. Campbell,J. M. Elouard,J. F. Flannagan,R. W. Flowers, C. Froehlich,E. Gaino,M. T. Gillies,P. Goloboff,P. M. Grant,M. D. Hubbard, Y. Isobe,J. Jackson,N. N. Kapoor,P. Landolt, W. P. McCafferty, 1. McLellan,R. Nelson, W. L. Peters,G. Pritchard,M. Sartori,!. Sivec,1. Stanford, K. W. Stewart,D. Studemann,B. Stark,P. Suter,B. Sweeney,S. Szczytko,andP. Zwick. Theseinstitutionsprovidedtheirinstitutionaland/oreconomicsupport:Facultadde CienciasNaturaleseInstitutoMiguelLillo,UniversidadNacionaldeTucuman;ConsejoNa cionaldeInvestigacionesCientificasyTecnicas(CONICET);ConsejodeInvestigaciones, UniversidadNacionaldeTucuman(CIUNT);Fundaci6nAntorchas,Fundaci6nMiguelLillo; Direcci6ndeTurismo,MunicipalidaddeTaffdelValle. vii viii Preface ThePermanentCommitteeonEphemeropteraConferencesprovidedpartialfinancial supportforfellowshipsforstudentsfromtheCzechRepublic,ChinaandSlovenia;andthe NorthAmericanBenthologicalSocietyforstudentsfromBoliviaandVenezuela. Thecompletionofthisbookwouldnothavebeenpossiblewithouttheinvaluableeffort ofGustavoSanchez,whomadethedigitalworkoftheoriginalsandthecoverdesign, C. Molineriand C. Nietowhopatientlyreviewedthefinalcopies,andvaluableadvicefrom MaryAnnMcCarraandRobertWheeler. ThecoverillustrationsweredonebyS. RoigJu nen!(Ephemeroptera)and A. Dupuy(Plecoptera). EduardoDominguez ConvenorandEditor August,2000 CONTENTS STATUS OF THE KNOWLEDGE OF EPHEMEROPTERA IN THE WORLD IntroductiontothePanelDiscussion . 1. Alba-Tercedor StatusoftheKnowledgeofEphemeropterainNortheastAsiaandGuidelinesfor FutureResearch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 y. 1. Bae TheCurrentStatusofEphemeropteraBiologyinAustralia. . . . . . . . . . . . . . . . . . . . . . 7 I. C. Campbell KnowledgeoftheAfrican-MalagasyMayflies . . . . . . . . . . . . . . . . . . . . 13 J. M. Elouard TheGentleQuest: 200YearsinSearchofNorthAmericanMayflies. . . . . . . . . . . . . . 21 W. P. McCafferty TheStatusoftheTaxonomyoftheMayfly(Ephemeroptera)FaunaofSouthAmerica. . 37 M. L. Pescador,M. D. Hubbard,andM. delC. Zuniga TheEphemeropteraofNewZealandandNewCaledonia. . . . . . . . . . . . . . . . . . . . . . . 43 W. L. Peters CurrentKnowledgeofMayflyResearchinEurope(Ephemeroptera). . . . . . . . . . . . . . 47 M. Sartori StatusoftheSystematicK