[{"data":1,"prerenderedAt":530},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Fgusenica":3,"alt-locale:glossary_en:\u002Fslovar\u002Fgusenica":320,"section-listing:disabled":343,"related-covers:en:":344,"section-listing:glossary_en:\u002Fslovar":345,"related-covers:en:\u002Fslovar\u002Fkukolka|\u002Fslovar\u002Fmetamorfoz|\u002Fslovar\u002Fkormovoe-rastenie":526},{"id":4,"title":5,"body":6,"coverImage":314,"description":315,"extension":316,"faq":317,"imagePrompt":318,"meta":319,"navigation":320,"order":317,"pageType":297,"path":321,"publishedAt":322,"readingMinutes":323,"relatedLinks":324,"seo":337,"sitemap":340,"stem":341,"tags":317,"updatedAt":317,"__hash__":342},"glossary_en\u002Fslovar\u002Fgusenica.md","Caterpillar",{"type":7,"value":8,"toc":299},"minimark",[9,14,41,44,48,62,66,69,91,95,98,152,155,159,170,174,189,194,197,201,212,232,235,239,242,274,278,285,291],[10,11,13],"h2",{"id":12},"what-is-a-caterpillar","What is a caterpillar",[15,16,17,18,22,23,28,29,31,32,31,36,40],"p",{},"The ",[19,20,21],"strong",{},"caterpillar"," is the larval stage of a butterfly (and moth), the second of four phases of ",[24,25,27],"a",{"href":26},"\u002Fen\u002Fslovar\u002Fmetamorfoz","complete metamorphosis",": egg → ",[19,30,21],{}," → ",[24,33,35],{"href":34},"\u002Fen\u002Fslovar\u002Fkukolka","pupa",[24,37,39],{"href":38},"\u002Fen\u002Fslovar\u002Fimago","imago",".",[15,42,43],{},"The biological task of the caterpillar is simple: eat and grow. During larval life it accumulates organic matter that becomes building material for the adult butterfly. Some species increase body mass 1,000–10,000 times compared with the newly hatched larva.",[10,45,47],{"id":46},"body-structure","Body structure",[15,49,50,51,54,55,58,59,40],{},"The caterpillar body consists of the ",[19,52,53],{},"head",", ",[19,56,57],{},"three thoracic segments",", and ",[19,60,61],{},"ten abdominal segments",[63,64,65],"h3",{"id":53},"Head",[15,67,68],{},"A hard chitinized capsule. On the head are:",[70,71,72,79,85],"ul",{},[73,74,75,78],"li",{},[19,76,77],{},"Chewing mandibles"," — powerful jaws for chewing leaves",[73,80,81,84],{},[19,82,83],{},"Six pairs of simple eyes"," (stemmata) — only coarse perception of light and shadow",[73,86,87,90],{},[19,88,89],{},"Silk gland"," — silk-secreting glands opening at the base of the lower lip; the thread is used to attach to substrate, spin cocoons, and for protection",[63,92,94],{"id":93},"legs","Legs",[15,96,97],{},"The caterpillar has two types of legs:",[99,100,101,120],"table",{},[102,103,104],"thead",{},[105,106,107,111,114,117],"tr",{},[108,109,110],"th",{},"Type",[108,112,113],{},"Number",[108,115,116],{},"Position",[108,118,119],{},"Structure",[121,122,123,138],"tbody",{},[105,124,125,129,132,135],{},[126,127,128],"td",{},"True legs",[126,130,131],{},"3 pairs",[126,133,134],{},"Thoracic segments",[126,136,137],{},"Jointed, with a claw",[105,139,140,143,146,149],{},[126,141,142],{},"Prolegs (false legs)",[126,144,145],{},"2–5 pairs",[126,147,148],{},"Abdominal segments",[126,150,151],{},"Fleshy, with hooks",[15,153,154],{},"Prolegs are unique to caterpillars; adult butterflies do not have them. Hooks on the sole let the caterpillar grip leaves and stems firmly.",[63,156,158],{"id":157},"integument","Integument",[15,160,161,162,164,165,169],{},"Caterpillar skin is soft and elastic — unlike the chitinous armor of ",[24,163,39],{"href":38},". Coloration is highly diverse: from green camouflage on a leaf to bright ",[24,166,168],{"href":167},"\u002Fen\u002Fslovar\u002Faposematizm","aposematism"," (warning of toxicity).",[10,171,173],{"id":172},"molts-and-instars","Molts and instars",[15,175,176,177,180,181,185,186,40],{},"The caterpillar's hard chitinous head does not grow — it must be shed periodically. This process is called ",[19,178,179],{},"molting"," (",[182,183,184],"em",{},"ecdysis","). Between molts is an ",[19,187,188],{},"instar",[15,190,191,192,40],{},"Most butterflies undergo 4–6 molts. The swallowtail caterpillar, for example, has five instars. After the last molt the caterpillar becomes a ",[24,193,35],{"href":34},[15,195,196],{},"Before molting the caterpillar stops feeding, attaches to the substrate, and splits the old skin at the base of the head capsule.",[10,198,200],{"id":199},"caterpillar-feeding","Caterpillar feeding",[15,202,203,204,207,208,40],{},"The vast majority of caterpillars are ",[19,205,206],{},"phytophagous",": they feed on plant tissue. Each species is tied to specific ",[24,209,211],{"href":210},"\u002Fen\u002Fslovar\u002Fkormovoe-rastenie","host plants",[70,213,214,220,226],{},[73,215,216,219],{},[19,217,218],{},"Monophages"," — feed on one species or genus of plants (for example, silkworm caterpillars eat only mulberry leaves)",[73,221,222,225],{},[19,223,224],{},"Oligophages"," — several related plants (many blues)",[73,227,228,231],{},[19,229,230],{},"Polyphages"," — a wide range of plants (painted lady, some tiger moths)",[15,233,234],{},"Rare exceptions are predatory caterpillars: some blues feed on ant larvae.",[10,236,238],{"id":237},"defensive-adaptations","Defensive adaptations",[15,240,241],{},"Caterpillars are favored prey of birds, wasps, and parasitic flies. Evolution has produced many defensive strategies:",[70,243,244,250,256,262,268],{},[73,245,246,249],{},[19,247,248],{},"Cryptic coloration"," — camouflage as a leaf, bark, or bird droppings",[73,251,252,255],{},[19,253,254],{},"Aposematism"," — bright coloration warning of toxicity (caterpillars feeding on toxic plants accumulate toxins)",[73,257,258,261],{},[19,259,260],{},"Osmeterium"," — forked organ of swallowtails: when threatened it is everted behind the head and emits a sharp odor",[73,263,264,267],{},[19,265,266],{},"Hairs and spines"," — in many nymphalids and tiger moths; some can cause skin irritation",[73,269,270,273],{},[19,271,272],{},"Mimicry"," — resemblance to dangerous objects (for example, a wasp)",[10,275,277],{"id":276},"caterpillar-and-pupa","Caterpillar and pupa",[15,279,280,281,284],{},"When the caterpillar has stored enough nutrients and completed the required number of molts, it prepares for ",[24,282,283],{"href":34},"pupation",". It stops feeding, empties the gut, and finds a suitable place — stem, leaf, soil, or tree bark.",[15,286,287,288,290],{},"Then the caterpillar attaches with a silk thread and sheds the last larval skin, revealing the ",[24,289,35],{"href":34}," beneath. The pupa looks immobile on the outside, but inside the organism is completely rebuilt.",[15,292,293,294,298],{},"The full glossary is in the ",[24,295,297],{"href":296},"\u002Fen\u002Fslovar","glossary"," section.",{"title":300,"searchDepth":301,"depth":301,"links":302},"",2,[303,304,310,311,312,313],{"id":12,"depth":301,"text":13},{"id":46,"depth":301,"text":47,"children":305},[306,308,309],{"id":53,"depth":307,"text":65},3,{"id":93,"depth":307,"text":94},{"id":157,"depth":307,"text":158},{"id":172,"depth":301,"text":173},{"id":199,"depth":301,"text":200},{"id":237,"depth":301,"text":238},{"id":276,"depth":301,"text":277},"\u002Fimages\u002Fslovar\u002Fgusenica.jpg","The caterpillar is the larval stage of a butterfly, whose main task is to eat and grow — accumulating about 99% of the energy needed for transformation.","md",null,"Photorealistic macro photo, large green caterpillar of Papilio machaon on fennel stem, sharp focus on prolegs and osmeterium gland, soft bokeh background, natural daylight, 16:9",{},true,"\u002Fslovar\u002Fgusenica","01.05.2026",1,[325,329,333],{"label":326,"path":327,"description":328},"Pupa","\u002Fslovar\u002Fkukolka","Next developmental stage after the caterpillar",{"label":330,"path":331,"description":332},"Metamorphosis","\u002Fslovar\u002Fmetamorfoz","Full transformation cycle",{"label":334,"path":335,"description":336},"Host plant","\u002Fslovar\u002Fkormovoe-rastenie","What the caterpillar feeds on",{"title":338,"description":339},"Caterpillar — butterfly larva: structure, feeding, molts","Caterpillar — larval stage in the butterfly life cycle. Body structure, prolegs, feeding types, number of molts, and transformation into a pupa.",{"loc":321},"slovar\u002Fgusenica","QtmJ6Q65Ujraym7a_aOhpv5Y4Azd1LQ-nqbY9pq_gjg",[],[],[346,351,355,361,366,367,372,377,382,387,392,397,403,408,411,416,421,426,429,434,438,443,448,453,458,463,468,473,478,481,486,492,498,504,509,514,520],{"title":347,"description":348,"path":349,"coverImage":350,"publishedAt":322,"order":317},"Antenna","Butterfly antennae are paired sensory organs on the head, used to detect odors, pheromones, and vibrations. Their shape is a key identification trait.","\u002Fslovar\u002Fantenna","\u002Fimages\u002Fslovar\u002Fantenna.png",{"title":254,"description":352,"path":353,"coverImage":354,"publishedAt":322,"order":317},"Aposematism is warning coloration in toxic or unpalatable butterflies. Bright colors signal danger to predators and protect the species from being eaten.","\u002Fslovar\u002Faposematizm","\u002Fimages\u002Fslovar\u002Faposematizm.png",{"title":356,"description":357,"path":358,"coverImage":359,"publishedAt":360,"order":317},"Batesian Mimicry","Batesian mimicry is when a harmless species evolves to resemble a toxic or dangerous one, borrowing its predator-deterrent reputation without the actual defense.","\u002Fslovar\u002Fbatezovskaya-mimikriya","\u002Fimages\u002Fslovar\u002Fbatezovskaya-mimikriya.png","25.07.2026",{"title":362,"description":363,"path":364,"coverImage":365,"publishedAt":322,"order":317},"Biotope","A biotope is a uniform habitat patch with specific conditions, home to a characteristic community. Each butterfly species prefers its own biotope.","\u002Fslovar\u002Fbiotop","\u002Fimages\u002Fslovar\u002Fbiotop.png",{"title":5,"description":315,"path":321,"coverImage":314,"publishedAt":322,"order":317},{"title":368,"description":369,"path":370,"coverImage":371,"publishedAt":322,"order":317},"Chitin","Chitin is the main structural polymer of insect integument. The hard external skeleton of butterflies, wing scales, and caterpillar armor are made of chitin.","\u002Fslovar\u002Fkhitin","\u002Fimages\u002Fslovar\u002Fkhitin.jpg",{"title":373,"description":374,"path":375,"coverImage":376,"publishedAt":322,"order":317},"Chrysalis","A chrysalis is a butterfly pupa with a hard chitinous case, often with a golden or silvery sheen. Inside, the organism is completely rebuilt.","\u002Fslovar\u002Fkhrizalida","\u002Fimages\u002Fslovar\u002Fkhrizalida.jpg",{"title":378,"description":379,"path":380,"coverImage":381,"publishedAt":322,"order":317},"Diapause","Diapause is a state of physiological rest in insects that allows survival of an unfavorable season. In butterflies, it can occur at any developmental stage.","\u002Fslovar\u002Fdiapauza","\u002Fimages\u002Fslovar\u002Fdiapauza.png",{"title":383,"description":384,"path":385,"coverImage":386,"publishedAt":322,"order":317},"Dimorphism","Dimorphism is the existence of two distinct forms within one species. In butterflies, males and females of the same species can differ sharply in coloration.","\u002Fslovar\u002Fdimorfizm","\u002Fimages\u002Fslovar\u002Fdimorfizm.jpg",{"title":388,"description":389,"path":390,"coverImage":391,"publishedAt":322,"order":317},"Eclosion","Eclosion is the emergence of an adult butterfly from the pupa. One of the most vulnerable and striking moments in the life cycle of lepidopterans.","\u002Fslovar\u002Feklozia","\u002Fimages\u002Fslovar\u002Feklozia.jpg",{"title":393,"description":394,"path":395,"coverImage":396,"publishedAt":322,"order":317},"Endemic","An endemic is a species that lives only in a specific geographic region and nowhere else. Islands and mountains are the main centers of butterfly endemism.","\u002Fslovar\u002Fendemik","\u002Fimages\u002Fslovar\u002Fendemik.jpg",{"title":398,"description":399,"path":400,"coverImage":401,"publishedAt":402,"order":317},"Eyespots","Eyespots are circular wing markings that mimic a vertebrate eye, used by butterflies either to startle predators or to redirect attacks away from vital body parts.","\u002Fslovar\u002Flozhnye-glazki","\u002Fimages\u002Fslovar\u002Flozhnye-glazki.png","13.08.2026",{"title":404,"description":405,"path":406,"coverImage":407,"publishedAt":322,"order":317},"Holometabolism","Holometabolism is a type of insect development with complete metamorphosis: egg → larva → pupa → imago. All butterflies develop by this type.","\u002Fslovar\u002Fgolometaboliya","\u002Fimages\u002Fslovar\u002Fgolometaboliya.jpg",{"title":334,"description":409,"path":335,"coverImage":410,"publishedAt":322,"order":317},"A host plant is a plant whose leaves a caterpillar of a given butterfly species feeds on. Most species are strictly specialized on 1–3 host plants.","\u002Fimages\u002Fslovar\u002Fkormovoe-rastenie.jpg",{"title":412,"description":413,"path":414,"coverImage":415,"publishedAt":322,"order":317},"Imago","Imago is the adult, sexually mature stage of an insect with fully formed wings. The final phase of complete metamorphosis.","\u002Fslovar\u002Fimago","\u002Fimages\u002Fslovar\u002Fimago.jpg",{"title":417,"description":418,"path":419,"coverImage":420,"publishedAt":322,"order":317},"Lepidoptera","Lepidoptera is the order of scale-winged insects, including butterflies and moths. The name means “scale-winged”: wings are covered with microscopic scales.","\u002Fslovar\u002Flepidoptera","\u002Fimages\u002Fslovar\u002Flepidoptera.jpg",{"title":422,"description":423,"path":424,"coverImage":425,"publishedAt":322,"order":317},"Melanism","Melanism is excess accumulation of dark pigment melanin, causing darkened coloration. Industrial melanism in the peppered moth is a classic evolution example.","\u002Fslovar\u002Fmelanizm","\u002Fimages\u002Fslovar\u002Fmelanizm.jpg",{"title":330,"description":427,"path":331,"coverImage":428,"publishedAt":322,"order":317},"Metamorphosis is complete transformation of an insect passing through four developmental stages: egg, larva (caterpillar), pupa, and adult (imago).","\u002Fimages\u002Fslovar\u002Fmetamorfoz.jpg",{"title":430,"description":431,"path":432,"coverImage":433,"publishedAt":322,"order":317},"Migration","Butterfly migration is seasonal movement over long distances. The record holder is the monarch, at up to 4,500 km; red admirals and painted ladies also migrate.","\u002Fslovar\u002Fmigraciya","\u002Fimages\u002Fslovar\u002Fmigraciya.jpg",{"title":272,"description":435,"path":436,"coverImage":437,"publishedAt":322,"order":317},"Mimicry in butterflies is resemblance to other species or objects for protection from predators. Batesian and Müllerian mimicry, with examples.","\u002Fslovar\u002Fmimikriya","\u002Fimages\u002Fslovar\u002Fmimikriya.jpg",{"title":439,"description":440,"path":441,"coverImage":442,"publishedAt":322,"order":317},"Monophage","A monophage is a species whose caterpillars feed on only one species or genus of plant. Monophagy makes a butterfly vulnerable if that plant disappears.","\u002Fslovar\u002Fmonofag","\u002Fimages\u002Fslovar\u002Fmonofag.jpg",{"title":444,"description":445,"path":446,"coverImage":447,"publishedAt":322,"order":317},"Nectar","Nectar is the sweet secretion of flowers and the main energy source for adult butterflies, which drink it through the proboscis and carry pollen too.","\u002Fslovar\u002Fnektar","\u002Fimages\u002Fslovar\u002Fnektar.jpg",{"title":449,"description":450,"path":451,"coverImage":452,"publishedAt":322,"order":317},"Oviposition","Oviposition is egg-laying by a female butterfly, who carefully chooses a host plant, tapping leaves with her legs, and lays eggs on the underside.","\u002Fslovar\u002Fovipozitsiya","\u002Fimages\u002Fslovar\u002Fovipozitsiya.jpg",{"title":454,"description":455,"path":456,"coverImage":457,"publishedAt":322,"order":317},"Pheromones","Butterfly pheromones are chemical signals for attracting mates, marking territory, and communication. Males and females release different pheromones.","\u002Fslovar\u002Fferomon","\u002Fimages\u002Fslovar\u002Fferomon.jpg",{"title":459,"description":460,"path":461,"coverImage":462,"publishedAt":322,"order":317},"Pollination","Pollination is transfer of pollen from anther to stigma. Butterflies are important pollinators: they move pollen between flowers while feeding on nectar.","\u002Fslovar\u002Fopylenie","\u002Fimages\u002Fslovar\u002Fopylenie.jpg",{"title":464,"description":465,"path":466,"coverImage":467,"publishedAt":322,"order":317},"Polyphagy","Polyphagy is the ability to feed on a wide range of plants. Polyphagous caterpillars are less vulnerable when one host plant species is lost than monophages.","\u002Fslovar\u002Fpolifagiya","\u002Fimages\u002Fslovar\u002Fpolifagiya.jpg",{"title":469,"description":470,"path":471,"coverImage":472,"publishedAt":322,"order":317},"Proboscis","The proboscis is the mouthpart of an adult butterfly, shaped as a flexible tube for sucking nectar and other liquids. At rest it is coiled in a spiral.","\u002Fslovar\u002Fkhobotok","\u002Fimages\u002Fslovar\u002Fkhobotok.jpg",{"title":474,"description":475,"path":476,"coverImage":477,"publishedAt":322,"order":317},"Puddling","Puddling in butterflies is behavior where insects gather on damp soil, puddles, or droppings to obtain mineral salts and amino acids.","\u002Fslovar\u002Fpudling","\u002Fimages\u002Fslovar\u002Fpudling.jpg",{"title":326,"description":479,"path":327,"coverImage":480,"publishedAt":322,"order":317},"The pupa is the third stage of complete metamorphosis, when the caterpillar transforms into a butterfly — outwardly still, but rebuilding within.","\u002Fimages\u002Fslovar\u002Fkukolka.jpg",{"title":482,"description":483,"path":484,"coverImage":485,"publishedAt":322,"order":317},"Range","Range is the geographic area within which a given butterfly species lives. Ranges may be continuous, fragmented, expanding, or shrinking.","\u002Fslovar\u002Fareal","\u002Fimages\u002Fslovar\u002Fareal.png",{"title":487,"description":488,"path":489,"coverImage":490,"publishedAt":491,"order":317},"Reintroduction","Reintroduction is the deliberate release of captive-bred or translocated individuals into a habitat where a species has gone locally extinct, aiming to re-establish a self-sustaining wild population.","\u002Fslovar\u002Freintroduktsiya","\u002Fimages\u002Fslovar\u002Freintroduktsiya.png","22.07.2026",{"title":493,"description":494,"path":495,"coverImage":496,"publishedAt":497,"order":317},"Relict Species","A relict species is a survivor of a once-widespread group whose range has contracted to isolated pockets — often mountaintops or glacial refuges — left over after past climate change.","\u002Fslovar\u002Freliktovyi-vid","\u002Fimages\u002Fslovar\u002Freliktovyi-vid.png","01.08.2026",{"title":499,"description":500,"path":501,"coverImage":502,"publishedAt":503,"order":317},"Stenotopic Species","A stenotopic species tolerates only a narrow range of habitat conditions, unlike a eurytopic generalist that thrives across many different environments.","\u002Fslovar\u002Fstenotopnyi-vid","\u002Fimages\u002Fslovar\u002Fstenotopnyi-vid.png","07.08.2026",{"title":505,"description":506,"path":507,"coverImage":508,"publishedAt":322,"order":317},"Taxonomy","Taxonomy is the science of classifying organisms. Butterflies belong to order Lepidoptera; taxonomy explains why the tortoiseshell is a nymphalid, not a blue.","\u002Fslovar\u002Ftaksonomiya","\u002Fimages\u002Fslovar\u002Ftaksonomiya.jpg",{"title":510,"description":511,"path":512,"coverImage":513,"publishedAt":322,"order":317},"Thermoregulation","Thermoregulation in butterflies is maintaining working body temperature. Unable to generate heat, they warm up in sun, wings spread like solar panels.","\u002Fslovar\u002Ftermoregulyatsiya","\u002Fimages\u002Fslovar\u002Ftermoregulyatsiya.jpg",{"title":515,"description":516,"path":517,"coverImage":518,"publishedAt":519,"order":317},"Toxin Sequestration","Toxin sequestration is when a caterpillar stores plant-derived toxins from its host plant unchanged in its own tissues, turning the plant's chemical defense into its own.","\u002Fslovar\u002Fsekvestraciya-toksinov","\u002Fimages\u002Fslovar\u002Fsekvestraciya-toksinov.png","19.08.2026",{"title":521,"description":522,"path":523,"coverImage":524,"publishedAt":525,"order":317},"Wing Venation","Wing venation is the pattern of hollow, rigid veins that forms a butterfly wing's supporting framework — its precise layout is a key character for identification and classification.","\u002Fslovar\u002Fzhilkovanie-kryla","\u002Fimages\u002Fslovar\u002Fzhilkovanie-kryla.png","27.07.2026",[527,528,529],{"label":326,"path":327,"description":328,"coverImage":480,"latinName":317},{"label":330,"path":331,"description":332,"coverImage":428,"latinName":317},{"label":334,"path":335,"description":336,"coverImage":410,"latinName":317},1787125907637]