Abstract
The species of flea beetles of the genus Chaetocnema Stephens, 1831 occurring in Madagascar are revised. Four new species (C. cachani, C. hygrophila, C. malgascia and C. orophila) are described and five species (C. bamakoensis BechynĂŠ C. confinis Crotch, C. fuscipennis Scherer, C. ganganensis BechynĂŠ and C. picipes Stephens) are added to the Madagascar fauna. The following new synonymies are proposed: C. wollastoni Baly, 1877 = C. fraterna Harold, 1879 syn. nov. = C. monomorpha BechynĂŠ, 1964 syn. nov.; C. pulla Chapuis, 1879 = C. tantilla Weise, 1910 syn. nov.; C. bilunulata Demaison, 1902 = C. sylvia BechynĂŠ, 1964 syn. nov.; C. vadoni BechynĂŠ, 1948 = C. alaotrensis BechynĂŠ, 1964 syn. nov.; C. gregaria Weise, 1910 = C. insularis Weise, 1910 syn. nov. Lectotypes are designated for C. gregaria Weise, 1910, C. insularis Weise, 1910, C. similis Weise, 1910 and C. tantilla Weise, 1910. A key to all the species is presented. Line drawings of male and female genitalia of all the species are included. Ecological and brief zoogeographical data on some species are given.
Highlights
No ecological information is available for this gbtvtttpccolccfl3s1hroeoaauaiairael78faemeeetgueCrcrsr)4lass,itttingiih5anh,ehcosepiaraattxaaooenemrcenairo,(lconsfsosbldiroisamfhnacneesysahCfCtohoptspf,tSefeahihpwt.thaerstfnoodnphaeheeiecrpakisnrueteltaseicseeosioeitecl,bibcctht.bhipsoantiosanpiolCeeaeelheeCtpfcseinlrrsse.asiaicyien.snentoldds-rhichaoaegtpbwioiAerematfarnieteaonehrnnohfnissfwas.tfftimsuetrsde,uhsiihiMigppnepnntsacomehrlus.istsslakc,ltahpeeeWeinuai(mncsdgeaeveirbc(luomaencsagapeeapt(grwvpaginGdriraelrpreewsaetiarederisnnseraaeevl,nssrscie,uoa,soytcgeiifsbsChiessfadanenpss1ecfn.rwmoaeicert9sacntnthTonldecibh1eabcea.myeiilsadu0ehdaly)eaMpp,eo;sskiaasAnul.mwei-t1iftnaaopfghnnagf7pairdiiomuri)eencrad8ntuoa,sotnnttnaea5ogndthutsucsiol.nrs)atchlslepputpo.praayseapsMtaeunspprlarsct.rAci.Meorcl,iateaeaooicliapnecsFrseaotaamwdr.riiiss(o)ntdasletemcF;haartsiIashsbiiniedtsoofegogcnpeusioirannrlasnmxboelCupfgstsssscaannhikappetctty1imsltohhhueoyansaeea6isneeess--rr,l, Chaetocnema bilunulata Demaison
Species associated with Gramineae in open fields
Ventral and dorsal view of the median lobe of the aedeagus in Chaetocnema species: C. similis Weise, lectotMbyapasedipau(g1na3sc)ct;aatraC, .ABnbedacehmvyaonkréoa,enMntosais(d1a8Bg)ea.cschayrn,éT, aMnaandaargivaesc(a1r6, );TôCl.anwâorlolas(1to4n);i BCa.lyc,oMnsaodbarginaascaWr,eiTsaen, aMnaardivaega(s1c7a)r;, CB.agieandga’AnnentosgisilB(e1c5h)y; nCé., ptJisinopoelrDtnmieavtiataesaodlttn,s,rytiAh1tbh9iifussr9rltoi8Naicuo)nae.gnd.ah.src(BwoJtieoficcnltiadhsvupeesdete,ciIsnipoed1sefi9ratis9hnsa8enl;aownowpdfidepwPreassaiorpdctnrhiefeaseialpcndroedOgcaaecudtnealtaei)in.ntvisacOTtiarfohineeinmdsnotaialnsflepssAeCwcso(eicienaefs-.,t tLicaBumli.ao]rn(tochmfe. iJgcoesln.ivuSestp,Iep1co9iem9s8o)ea.asso[Ic.iaatqeudatwiciathFoCrosnkv. oalnvdulIa.cbeaateatians p(Lar.)
Summary
Coleoptera, Chrysomelidae, Chaetocnema, Madagascar, taxonomy, biogeography, key bnnnnACc1ioooer9rebiwvvvos1es...tf0;;tc(sLrzC.hyCaCAoe,.nc..coCotcktpvg.ona.eauefTtycydioylhumhlogptasaeonreicneaisiCsaisppp,BlahhelearCeanicretccp.ehniaheudeihplssyieyrssdnsoSgo,piaérpcgfet,1ohoacni8pl1esiaeoe7eh9rtasn9edei4lrd:b8ias,=seo,CfC=pemo.CC.trrlCeew..geCs.amsotse.anaplnaolnggleatlaftrecagsiotedilntahelogt.easresnacLneairgWinsiairenBisaesneieaasiuWgBnlsdyisBdeevre,,aceeCiCw1hscn1he.8hy.9ia,7nyno1e7gné1r0tosé9o=ap,1csonyh0nC1fdni,e9lm..maf6CCi)4nar..aalopaiestSnvireycea.strn;eiunnp.dpldCaeaehn.ssrfeoHecinbvsSmras.iitr;Wl,beaouep1Cllneeddh8.ui,3esggla1nea1enr,st8nedoa)71gictaf99aaDcir1rlvuesie0ierayam,arniosdCWan.pfdi.gneseaeocsodliiiilvnnsmeet.t,sohM,i=l1e(it1aC9shC9sd0e.pW1.a2e0bMmgcea=a=oiiamessndcesCCaoaa,.ka.mgr1orsaiaeo9enysr1rnlsicevpn0usairhcilraesaalafuvnrBaBdiBidusseeeeencCdcWdcahh..h..yyeEtyFTinanncsoénéheoéu,te,,liCrol1f11l.gnoa999ciel616clWow4o0a4nwlefssssiaiiyyypnsnnnnneeigds...,
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