[{"data":1,"prerenderedAt":367},["ShallowReactive",2],{"species-sheet-\u002Ffr\u002Fspecies\u002Fformica-fusca":3},{"species":4,"profile":237,"countryNames":277,"lookalikes":293,"similar":299,"posts":347},{"id":5,"authority":6,"colonyStructure":7,"confidence":8,"countries":11,"defense":27,"diet":30,"difficulty":33,"dryHumidity":34,"escapeRisk":10,"estimated":35,"experience":39,"extension":40,"finder":41,"founding":42,"growth":43,"guide":34,"hibernation":44,"hibernationMonths":45,"hibernationTemperature":48,"humidity":51,"image":54,"imageCredit":55,"imageHeight":59,"imageWidth":60,"interests":34,"keptSince":34,"legal":61,"lookalikes":64,"majorSize":34,"maxWorkers":68,"meta":69,"nests":70,"nuptialFlightMonths":74,"nuptialFlightTime":76,"nuptialFlightTriggers":77,"polymorphism":79,"queenSize":80,"regions":81,"relatedPosts":84,"reviewedAt":63,"scientificName":88,"sources":89,"stem":221,"subfamily":222,"temperature":223,"tribe":226,"workerSize":227,"__hash__":230,"slug":231,"genus":232,"nickname":233,"aliases":234,"tagline":236},"species\u002Fspecies\u002Fformica-fusca.yml","Linnaeus, 1758","facultative",{"biology":9,"husbandry":10,"nuptialFlight":10},"high","medium",[12,13,14,15,16,17,18,19,20,21,22,23,24,25,26],"GB","FR","BE","NL","DE","CH","AT","CZ","PL","DK","SE","NO","FI","EE","RU",[28,29],"bite","acid",[31,32],"sugar","insects","3",null,[36,37,38],"workerSize","queenSize","maxWorkers","compiled","yml",false,"claustral","moderate","required",[46,47],10,3,[49,50],5,8,[52,53],50,60,"https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fspecies\u002Fformica-fusca.jpg",{"author":56,"license":57,"url":58},"Jonghyun Park","CC BY 4.0","https:\u002F\u002Fwww.inaturalist.org\u002Fobservations\u002F396084478",800,1200,{"status":62,"checked":63},"restricted","2026-10-11",[65,66,67],"Formica lemani","Formica cinerea","Lasius niger",2000,{},[71,72,73],"ytong","naturalistic","sandwich",[75,50],6,"afternoon",[78],"heat","monomorphic",[50,46],[82,83],"europe","asia",[85,86,87],"how-to-hibernate-your-ants","what-to-do-after-catching-your-first-queen-ant","how-to-make-a-test-tube-setup-tutorial","Formica fusca",[90,96,104,108,112,117,121,125,129,133,139,143,148,152,156,160,164,168,172,176,180,184,188,192,197,201,205,209,213,217],{"type":91,"title":92,"url":93,"covers":94},"reference","AntCat: Formica fusca Linnaeus, 1758 (the catalog of the ants of the world)","https:\u002F\u002Fantcat.org\u002Fcatalog\u002F437477",[95],"taxonomy",{"type":97,"title":98,"url":99,"covers":100},"book","Collingwood (1979), Fauna Entomologica Scandinavica 8: The Formicidae (Hymenoptera) of Fennoscandia and Denmark, treatment of Formica fusca (Plazi TreatmentBank)","https:\u002F\u002Ftreatment.plazi.org\u002Fid\u002F0382512000C3A485D270E4D29FE546C8",[95,101,102,103],"biology","distribution","nuptialFlight",{"type":97,"title":105,"url":106,"covers":107},"Collingwood (1979), Fauna Entomologica Scandinavica 8: The Formicidae (Hymenoptera) of Fennoscandia and Denmark, treatment of Formica lemani, the look-alike of Formica fusca (Plazi TreatmentBank)","https:\u002F\u002Ftreatment.plazi.org\u002Fid\u002F5226FD4F4CECB42C99A56E2751BB60BF",[95,101,102],{"type":97,"title":109,"url":110,"covers":111},"Collingwood (1979), Fauna Entomologica Scandinavica 8: The Formicidae (Hymenoptera) of Fennoscandia and Denmark, treatment of Formica sanguinea, the main slave-maker of Formica fusca (Plazi TreatmentBank)","https:\u002F\u002Ftreatment.plazi.org\u002Fid\u002F7A1AA6D5F2E44E7878EA9B03CF9208A3",[101],{"type":113,"title":114,"url":115,"covers":116},"paper","Hannonen, Helanterä and Sundström (2004), Molecular Ecology 13: Habitat age, breeding system and kinship in the ant Formica fusca","https:\u002F\u002Fdoi.org\u002F10.1111\u002Fj.1365-294x.2004.02136.x",[101],{"type":113,"title":118,"url":119,"covers":120},"Włodarczyk and Szczepaniak (2017), Journal of Insect Physiology 96: Facultative slave-making ants Formica sanguinea label their slaves with own recognition cues instead of employing the strategy of chemical mimicry","https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.jinsphys.2016.10.016",[101],{"type":91,"title":122,"url":123,"covers":124},"BWARS: Formica fusca (large black ant)","https:\u002F\u002Fbwars.com\u002Fant\u002Fformicidae\u002Fformicinae\u002Fformica-fusca",[101,102,103],{"type":91,"title":126,"url":127,"covers":128},"Catalogue of Life: Formica fusca Linnaeus, 1758","https:\u002F\u002Fwww.catalogueoflife.org\u002Fdata\u002Ftaxon\u002F6JH7P",[95],{"type":91,"title":130,"url":131,"covers":132},"GBIF: Formica fusca Linnaeus, 1758, occurrence records by country","https:\u002F\u002Fwww.gbif.org\u002Fspecies\u002F1314881",[102],{"type":134,"title":135,"url":136,"covers":137},"careSheet","Ameisenhaltung.de: Artenverzeichnis, Formica fusca","https:\u002F\u002Fwww.ameisenhaltung.de\u002Fartenverzeichnis\u002Fentry\u002F210-formica-fusca\u002F",[138,101,103],"husbandry",{"type":134,"title":140,"url":141,"covers":142},"Antstore: Formica (Serviformica) fusca","https:\u002F\u002Fwww.antstore.net\u002Fshop\u002Fen\u002Fants\u002FAnts-from-Central-Europe\u002FFormica-Serviformica-fusca.html",[138,101,103],{"type":144,"title":145,"url":146,"covers":147},"forum","Ameisenforum.de: Artbeschreibungen und Steckbriefe, Formica fusca (swarming dates and hours, colony size, founding)","https:\u002F\u002Fwww.ameisenforum.de\u002Fartbeschreibungen-steckbriefe\u002Fformica-fusca-t30383.html",[138,101,103],{"type":134,"title":149,"url":150,"covers":151},"Formiculture: Care Sheet, Formica fusca (dspdrew)","https:\u002F\u002Fwww.formiculture.com\u002Ftopic\u002F7251-care-sheet-formica-fusca\u002F",[138,103],{"type":134,"title":153,"url":154,"covers":155},"FormicaMarket: Formica fusca care guide","https:\u002F\u002Fformicamarket.com\u002Fen\u002Fant-database\u002Fformica-fusca\u002F",[138,103],{"type":134,"title":157,"url":158,"covers":159},"Ants R Us: Formica fusca starter kit","https:\u002F\u002Fwww.antsrus.com\u002Fproduct-page\u002Fformica-fusca",[138],{"type":134,"title":161,"url":162,"covers":163},"AntsDavey: Formica fusca, about the species","https:\u002F\u002Fwww.antsdavey.co.uk\u002Fproduct-page\u002Fformca-fusca-with-eggs",[138],{"type":134,"title":165,"url":166,"covers":167},"Ant Shack: Formica fusca (Silky Ant) care sheet","https:\u002F\u002Fwww.ant-shack.com\u002Fblogs\u002Fant-care-sheets-1\u002Fformica-fusca-silky-ant-care-sheet",[138],{"type":134,"title":169,"url":170,"covers":171},"Antkeeping.info: Formica fusca","https:\u002F\u002Fantkeeping.info\u002Fants\u002FFormica-fusca\u002F",[101,103],{"type":91,"title":173,"url":174,"covers":175},"Wikipedia: Formica fusca","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFormica_fusca",[95,101,103],{"type":144,"title":177,"url":178,"covers":179},"Ameisenforum.de: Formica fusca keeping report Maddio (colony with several queens, Ytong nest, winter rest in an unheated garage)","https:\u002F\u002Fameisenforum.de\u002Fformica-serviformica-fusca-maddio-s-haltungserfahrungen-t55581.html",[138],{"type":144,"title":181,"url":182,"covers":183},"Ameisenforum.de: Formica fusca keeping report Aaron (young colony, gradual cooling for the winter rest)","https:\u002F\u002Fwww.ameisenforum.de\u002Fformica\u002Fformica-fusca-haltungsbericht-aaron-t50145.html",[138],{"type":144,"title":185,"url":186,"covers":187},"Ameisenforum.de: Formica fusca keeping report Ina H. (founding queen that ate her larvae after repeated disturbance)","https:\u002F\u002Fameisenforum.de\u002Fformica\u002Fformica-fusca-haltungserfahrungen-t44579.html",[138],{"type":144,"title":189,"url":190,"covers":191},"Antstore forum: Formica fusca and Formica sanguinea journal (a fusca colony with one queen and ten workers reached over 150 workers in its first year, 2012)","https:\u002F\u002Fwww.antstore.net\u002Fforum\u002Fpost142118.html",[138],{"type":91,"title":193,"url":194,"covers":195},"EU list of invasive alien species of Union concern (Implementing Regulation 2016\u002F1141, consolidated)","https:\u002F\u002Feur-lex.europa.eu\u002Feli\u002Freg_impl\u002F2016\u002F1141\u002Foj",[196],"legal",{"type":91,"title":198,"url":199,"covers":200},"Czech Republic: Decree 395\u002F1992 Sb., Annex III, list of specially protected animals (\"mravenec - Formica spp.\": every Formica species is protected as endangered)","https:\u002F\u002Fwww.zakonyprolidi.cz\u002Fcs\u002F1992-395",[196],{"type":91,"title":202,"url":203,"covers":204},"Czech Republic: Act 114\u002F1992 Sb. on nature and landscape protection, section 50 (forbids catching, keeping, transporting and selling specially protected animals without an exemption)","https:\u002F\u002Fwww.zakonyprolidi.cz\u002Fcs\u002F1992-114",[196],{"type":91,"title":206,"url":207,"covers":208},"Bundesartenschutzverordnung (BArtSchV), Anlage 1: protected species in Germany","https:\u002F\u002Fwww.gesetze-im-internet.de\u002Fbartschv_2005\u002Fanlage_1.html",[196],{"type":91,"title":210,"url":211,"covers":212},"Poland: Regulation of the Minister of the Environment of 16 December 2016 on species protection of animals (Dz.U. 2016 item 2183; among the Formica ants only six mound-building wood ants are listed)","https:\u002F\u002Feli.gov.pl\u002Feli\u002FDU\u002F2016\u002F2183\u002Fogl",[196],{"type":91,"title":214,"url":215,"covers":216},"MITECO: Spanish Catalogue of Invasive Alien Species, arthropods","https:\u002F\u002Fwww.miteco.gob.es\u002Fes\u002Fbiodiversidad\u002Ftemas\u002Fconservacion-de-especies\u002Fespecies-exoticas-invasoras\u002Fce_eei_artropodos_nc.html",[196],{"type":91,"title":218,"url":219,"covers":220},"Japan Ministry of the Environment: designated invasive alien species under the Invasive Alien Species Act","https:\u002F\u002Fwww.env.go.jp\u002Fnature\u002Fintro\u002F2outline\u002Flist.html",[196],"species\u002Fformica-fusca","Formicinae",[224,225],21,25,"Formicini",[228,229],4,7,"ygYMn4Z0dgHrLOX99PySqq0MiM5cRSRkTvkdk80KsrA","formica-fusca","Formica","Fourmi toute brune",[235],"Fourmi soyeuse","Une fourmi noire timide et vive, qui pardonne les erreurs de débutant et sert d'hôte classique aux fourmis esclavagistes.",{"id":238,"title":239,"aliases":234,"body":240,"description":244,"extension":247,"faqs":248,"identification":258,"language":259,"meta":260,"navigation":261,"nickname":233,"notes":262,"path":273,"seo":274,"stem":275,"tagline":236,"__hash__":276},"speciesProfiles\u002Ffr\u002Fspecies\u002Fformica-fusca.md","Formica Fusca",{"type":241,"value":242,"toc":243},"minimark",[],{"title":244,"searchDepth":245,"depth":245,"links":246},"",2,[],"md",[249,252,255],{"question":250,"answer":251},"Pourquoi Formica fusca est-elle appelée « fourmi esclave » ?","Parce que c'est la victime habituelle des fourmis esclavagistes, et non parce qu'elle réduit qui que ce soit en esclavage. Formica sanguinea et Polyergus rufescens razzient ses nids pour s'emparer des nymphes et élèvent les ouvrières écloses comme auxiliaires, et toutes les espèces du groupe fusca de Fennoscandie ont été trouvées dans des colonies mixtes avec Formica sanguinea. Son nom allemand, Grauschwarze Sklavenameise, signifie « fourmi esclave gris-noir » et renvoie à la même habitude.",{"question":253,"answer":254},"Où Formica fusca niche-t-elle dans la nature ?","Surtout dans le sol, dans les talus et sous les pierres, mais aussi dans de vieilles souches et du bois mort. Elle aime les endroits secs, ouverts et légèrement ombragés, comme les haies, les lisières de forêt, les landes, les clairières et les franges des villes, et ses colonies restent généralement modestes, de quelques centaines à environ deux mille ouvrières.",{"question":256,"answer":257},"Que mange Formica fusca dans la nature ?","Les ouvrières chassent seules de petits insectes, et elles boivent aussi le miellat des pucerons et le nectar des plantes. Elles peuvent occuper longtemps une colonie de pucerons et la défendre, et elles exploitent rapidement les sources de nourriture éphémères, allant parfois jusqu'à prendre la nourriture d'ouvrières de Lasius niger sur le chemin du retour.","Des ouvrières d'un noir terne à gris foncé, aux pattes brunâtres, qui courent vite et cherchent leur nourriture seules, plus grandes et aux pattes plus longues que Lasius niger, et moins argentées que Formica cinerea. Formica lemani est presque identique et seul un microscope (les poils du pronotum et des pattes) permet de les distinguer : une colonie vendue sous le nom de Formica fusca n'est donc qu'une bonne hypothèse au sein du groupe fusca, et cette fiche décrit l'espèce au sens strict.","fr",{},true,[263,266,269,271],{"kind":264,"text":265},"tip","Prévoyez dans le nid une chambre humide et gardez l'aire de chasse sèche. L'espèce vient de terrains secs et ouverts, et les éleveurs rapportent qu'un nid humide associé à une aire de chasse sèche fonctionne bien.",{"kind":267,"text":268},"watchOut","Laissez la reine fondatrice tranquille autant que possible. Des éleveurs rapportent des reines qui ont mangé presque toutes leurs larves après des contrôles et des vibrations répétés : gardez donc le tube sombre, immobile et fermé jusqu'à l'apparition des premières ouvrières.",{"kind":267,"text":270},"Les colonies sont nerveuses : une légère vibration envoie les ouvrières courir dans tous les sens avec le couvain. Posez l'installation sur une surface stable et donnez-lui de la place et de l'aération, car les ouvrières projettent de l'acide formique dans les contenants exigus.",{"kind":264,"text":272},"Ne vous inquiétez pas si la reine arrête de pondre à la fin de l'été : la colonie passe normalement l'hiver au repos, sans couvain. Refroidissez-la progressivement à l'automne, une fois le dernier couvain éclos et les ouvrières ralenties.","\u002Ffr\u002Fspecies\u002Fformica-fusca",{"description":244},"fr\u002Fspecies\u002Fformica-fusca","_3pTJS7CTKq5GzzZipBdk4N0TYk60WisppJPz5JmLvE",[278,279,280,281,282,283,284,285,286,287,288,289,290,291,292],"Allemagne","Autriche","Belgique","Danemark","Estonie","Finlande","France","Norvège","Pays-Bas","Pologne","Royaume-Uni","Russie","Suède","Suisse","Tchéquie",[294,295,297],{"name":65,"slug":34},{"name":66,"slug":296},"formica-cinerea",{"name":67,"slug":298},"lasius-niger",[300,315,331],{"slug":296,"scientificName":66,"genus":232,"nickname":244,"aliases":301,"tagline":302,"image":303,"experience":304,"guide":305,"difficulty":306,"workerSize":307,"majorSize":34,"queenSize":308,"temperature":310,"hibernation":44,"hibernationTemperature":312,"hibernationBand":313,"sizeClass":10,"founding":42,"colonyStructure":7,"regions":314},[],"Grande, rapide et nerveuse : une projeteuse d'acide formique qui peut atteindre 10 000 ouvrières.","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fformica_cinerea_colony_into_ytong_nest_2.jpeg","firstHand","how-to-care-for-formica-cinerea","5",[228,50],[50,309],11,[224,311],27,[49,50],"cold",[82,83],{"slug":316,"scientificName":317,"genus":232,"nickname":318,"aliases":319,"tagline":320,"image":321,"experience":39,"guide":34,"difficulty":322,"workerSize":323,"majorSize":34,"queenSize":325,"temperature":326,"hibernation":44,"hibernationTemperature":328,"hibernationBand":313,"sizeClass":10,"founding":329,"colonyStructure":7,"regions":330},"formica-sanguinea","Formica sanguinea","Fourmi rouge-sang",[],"Une pillarde audacieuse, rouge et noire, qui vole les nymphes d'autres Formica pour les élever comme auxiliaires : un projet pour les éleveurs qui maîtrisent déjà les bases.","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fspecies\u002Fformica-sanguinea.jpg","6",[75,324],9,[324,309],[224,327],26,[49,50],"parasitic",[82,83],{"slug":332,"scientificName":333,"genus":334,"nickname":244,"aliases":335,"tagline":338,"image":339,"experience":304,"guide":340,"difficulty":33,"workerSize":341,"majorSize":34,"queenSize":342,"temperature":343,"hibernation":44,"hibernationTemperature":344,"hibernationBand":313,"sizeClass":10,"founding":42,"colonyStructure":345,"regions":346},"lasius-emarginatus","Lasius emarginatus","Lasius",[336,337],"ManhattAnt","Fourmi échancrée","Un petit Lasius à croissance rapide, au thorax rougeâtre, qui adore creuser des tunnels.","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Flasius_emarginatus_inside_test_tube_6.jpeg","how-to-care-for-lasius-emarginatus",[47,49],[229,324],[224,311],[49,50],"monogyne",[82],[348,355,361],{"id":349,"title":350,"description":351,"image":352,"categoryText":353,"path":354},"blog\u002Ffr\u002Fhow-to-hibernate-your-ants.md","Comment faire hiverner vos fourmis - Tutoriel d'hivernation","Dans ce guide, parlons de l'hivernation : qu'est-ce que c'est ? Pourquoi les fourmis en ont-elles besoin ? Dois-je faire hiverner mes fourmis ? Voyons ça !","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fbruma_ants_thumbnail_hibernation_guide.png","Bases","\u002Ffr\u002Fhow-to-hibernate-your-ants",{"id":356,"title":357,"description":358,"image":359,"categoryText":353,"path":360},"blog\u002Ffr\u002Fwhat-to-do-after-catching-your-first-queen-ant.md","Que faire après avoir capturé votre première reine ?","Dans ce court guide, vous allez découvrir les étapes à suivre après avoir capturé votre toute première reine de fourmis ! C'est parti !","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fbrumaants_miniatura_what_to_do_after_catching_a_queen_ant.png","\u002Ffr\u002Fwhat-to-do-after-catching-your-first-queen-ant",{"id":362,"title":363,"description":364,"image":365,"categoryText":353,"path":366},"blog\u002Ffr\u002Fhow-to-make-a-test-tube-setup-tutorial.md","Comment préparer une installation en tube à essai - Bases","Dans ce tutoriel, apprenez à préparer une installation en tube à essai, la meilleure façon d'offrir un environnement idéal à une reine fraîchement fécondée !","https:\u002F\u002Fcdn.brumaants.com\u002Fimages\u002Fbruma_ants_thumbnail_test_tube_setup_tutorial_new.png","\u002Ffr\u002Fhow-to-make-a-test-tube-setup-tutorial",1791900245526]