[{"data":1,"prerenderedAt":330},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Flozhnye-glazki":3,"alt-locale:glossary_en:\u002Fslovar\u002Flozhnye-glazki":110,"section-listing:disabled":132,"related-covers:en:":133,"section-listing:glossary_en:\u002Fslovar":134,"related-covers:en:\u002Fvidy-babochek\u002Fvidy\u002Fmorfo-peleid|\u002Fvidy-babochek\u002Fvidy\u002Fperlamutrovka-pandora|\u002Fentsiklopediya\u002Fmimikriya-i-maskirovka":323},{"id":4,"title":5,"body":6,"coverImage":95,"description":96,"extension":97,"faq":98,"imagePrompt":108,"meta":109,"navigation":110,"order":111,"pageType":112,"path":113,"publishedAt":114,"readingMinutes":115,"relatedLinks":116,"seo":126,"sitemap":129,"stem":130,"tags":111,"updatedAt":111,"__hash__":131},"glossary_en\u002Fslovar\u002Flozhnye-glazki.md","Eyespots",{"type":7,"value":8,"toc":87},"minimark",[9,14,21,24,28,44,48,66,70,73],[10,11,13],"h2",{"id":12},"definition","Definition",[15,16,17,20],"p",{},[18,19,5],"strong",{}," are roughly circular wing markings, usually composed of concentric rings of contrasting colour, that visually resemble a vertebrate eye. They occur widely across butterflies and moths and are one of the best-studied examples of how a simple visual pattern can serve a specific, testable anti-predator function rather than existing merely for display.",[15,22,23],{},"Despite their superficial similarity across species, eyespots are not a single strategy — biologists distinguish at least two distinct defensive mechanisms depending on the eyespot's size, position, and visibility.",[10,25,27],{"id":26},"deflection-small-eyespots-at-the-wing-margin","Deflection: small eyespots at the wing margin",[15,29,30,31,34,35,38,39,43],{},"Small eyespots positioned near the outer edge of the wing work through ",[18,32,33],{},"deflection",": a predator, especially a bird, tends to aim its strike at the most conspicuous part of a fleeing target, and a bright marginal eyespot draws that strike toward an expendable piece of wing rather than the butterfly's body. A butterfly that loses a wing-edge fragment to a deflected strike survives and can often still fly reasonably well, while a strike aimed at the body would be fatal. Many fritillaries and heaths, including species like the ",[18,36,37],{},"Cardinal"," (",[40,41,42],"em",{},"Argynnis pandora","), carry exactly this kind of small, marginal eyespot pattern.",[10,45,47],{"id":46},"intimidation-large-suddenly-revealed-eyespots","Intimidation: large, suddenly-revealed eyespots",[15,49,50,51,54,55,58,59,38,62,65],{},"Large eyespots, often concealed on a wing surface that stays hidden while the butterfly rests, work through a different mechanism: ",[18,52,53],{},"startle"," or ",[18,56,57],{},"intimidation",". When disturbed, the butterfly abruptly reveals the hidden eyespots — by flicking open folded wings — presenting a predator, especially a small bird, with a sudden pattern resembling the eyes of a larger animal. The brief hesitation this triggers is often enough for the butterfly to escape. Some ",[18,60,61],{},"Peleides Blue Morpho",[40,63,64],{},"Morpho peleides",") relatives and owl butterflies use exaggerated versions of this strategy, with eyespots large enough to dominate the entire wing surface.",[10,67,69],{"id":68},"why-eyespot-function-is-testable","Why eyespot function is testable",[15,71,72],{},"Eyespot function is one of the rare cases in evolutionary biology where the adaptive hypothesis has been directly tested experimentally: researchers have manipulated eyespot size, number, and visibility on live and model butterflies and measured how wild predators respond, consistently finding that larger, more eye-like spots deter attack more effectively than smaller or asymmetric ones, and that marginal spots specifically increase the rate of survivable wing-edge damage relative to fatal body strikes.",[15,74,75,76,81,82,86],{},"See also: ",[77,78,80],"a",{"href":79},"\u002Fen\u002Fentsiklopediya\u002Fmimikriya-i-maskirovka","Mimicry and Camouflage in Butterflies",", ",[77,83,85],{"href":84},"\u002Fen\u002Fslovar\u002Faposematizm","aposematism",".",{"title":88,"searchDepth":89,"depth":89,"links":90},"",2,[91,92,93,94],{"id":12,"depth":89,"text":13},{"id":26,"depth":89,"text":27},{"id":46,"depth":89,"text":47},{"id":68,"depth":89,"text":69},"\u002Fimages\u002Fslovar\u002Flozhnye-glazki.png","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.","md",[99,102,105],{"q":100,"a":101},"What are eyespots on a butterfly wing?","Eyespots are roughly circular markings, usually made of concentric rings of contrasting colour, that resemble a vertebrate eye. They appear on the wings of many butterfly and moth families and serve one of two main defensive functions: startling or intimidating a predator, or deflecting an attack toward an expendable part of the wing.",{"q":103,"a":104},"How do eyespots protect a butterfly from predators?","Small eyespots near the wing margin tend to redirect a predator's strike toward the wing edge rather than the body, so the butterfly loses only a piece of wing and survives; large, prominent eyespots — especially when suddenly revealed, as in some Morpho and owl butterflies — instead work by startling or briefly frightening a predator such as a bird, buying the butterfly a moment to escape.",{"q":106,"a":107},"Are eyespots the same in every butterfly species?","No. Eyespot size, number, and placement vary enormously between species and even between the wing's upper and lower surfaces of the same individual, and their function is tuned accordingly — the huge, hidden upperside eyespots of some Morpho species stay concealed at rest and are flashed suddenly only when disturbed, while small marginal eyespots on species like fritillaries and heaths are visible at all times and work through the deflection mechanism instead.","Photorealistic macro photograph, large blue morpho butterfly with wings spread showing prominent dark eyespot markings ringed with contrasting colour on the underside of the hindwing, natural rainforest light, 16:9",{},true,null,"glossary","\u002Fslovar\u002Flozhnye-glazki","13.08.2026",1,[117,120,123],{"label":61,"path":118,"description":119},"\u002Fvidy-babochek\u002Fvidy\u002Fmorfo-peleid","A genus famous for large, suddenly-revealed eyespots used to startle predators",{"label":37,"path":121,"description":122},"\u002Fvidy-babochek\u002Fvidy\u002Fperlamutrovka-pandora","A fritillary with smaller marginal eyespots typical of the deflection strategy",{"label":80,"path":124,"description":125},"\u002Fentsiklopediya\u002Fmimikriya-i-maskirovka","The wider set of visual defense strategies eyespots belong to, alongside camouflage and warning colour",{"title":127,"description":128},"Eyespots — what they are and how butterflies use them for defense","Eyespots: circular eye-like wing markings that startle predators or deflect their attacks. How the deflection and intimidation strategies differ.",{"loc":113},"slovar\u002Flozhnye-glazki","7DGDD_vB2n2PvRr8Sa8ZGl0pfe4gFSch5Bo8RM9t4Mk",[],[],[135,141,146,152,157,162,167,172,177,182,187,192,193,198,203,208,213,218,223,228,233,238,243,248,253,258,263,268,273,278,283,289,295,301,306,311,317],{"title":136,"description":137,"path":138,"coverImage":139,"publishedAt":140,"order":111},"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","01.05.2026",{"title":142,"description":143,"path":144,"coverImage":145,"publishedAt":140,"order":111},"Aposematism","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":147,"description":148,"path":149,"coverImage":150,"publishedAt":151,"order":111},"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":153,"description":154,"path":155,"coverImage":156,"publishedAt":140,"order":111},"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":158,"description":159,"path":160,"coverImage":161,"publishedAt":140,"order":111},"Caterpillar","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.","\u002Fslovar\u002Fgusenica","\u002Fimages\u002Fslovar\u002Fgusenica.jpg",{"title":163,"description":164,"path":165,"coverImage":166,"publishedAt":140,"order":111},"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":168,"description":169,"path":170,"coverImage":171,"publishedAt":140,"order":111},"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":173,"description":174,"path":175,"coverImage":176,"publishedAt":140,"order":111},"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":178,"description":179,"path":180,"coverImage":181,"publishedAt":140,"order":111},"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":183,"description":184,"path":185,"coverImage":186,"publishedAt":140,"order":111},"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":188,"description":189,"path":190,"coverImage":191,"publishedAt":140,"order":111},"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":5,"description":96,"path":113,"coverImage":95,"publishedAt":114,"order":111},{"title":194,"description":195,"path":196,"coverImage":197,"publishedAt":140,"order":111},"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":199,"description":200,"path":201,"coverImage":202,"publishedAt":140,"order":111},"Host plant","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.","\u002Fslovar\u002Fkormovoe-rastenie","\u002Fimages\u002Fslovar\u002Fkormovoe-rastenie.jpg",{"title":204,"description":205,"path":206,"coverImage":207,"publishedAt":140,"order":111},"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":209,"description":210,"path":211,"coverImage":212,"publishedAt":140,"order":111},"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":214,"description":215,"path":216,"coverImage":217,"publishedAt":140,"order":111},"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":219,"description":220,"path":221,"coverImage":222,"publishedAt":140,"order":111},"Metamorphosis","Metamorphosis is complete transformation of an insect passing through four developmental stages: egg, larva (caterpillar), pupa, and adult (imago).","\u002Fslovar\u002Fmetamorfoz","\u002Fimages\u002Fslovar\u002Fmetamorfoz.jpg",{"title":224,"description":225,"path":226,"coverImage":227,"publishedAt":140,"order":111},"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":229,"description":230,"path":231,"coverImage":232,"publishedAt":140,"order":111},"Mimicry","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":234,"description":235,"path":236,"coverImage":237,"publishedAt":140,"order":111},"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":239,"description":240,"path":241,"coverImage":242,"publishedAt":140,"order":111},"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":244,"description":245,"path":246,"coverImage":247,"publishedAt":140,"order":111},"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":249,"description":250,"path":251,"coverImage":252,"publishedAt":140,"order":111},"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":254,"description":255,"path":256,"coverImage":257,"publishedAt":140,"order":111},"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":259,"description":260,"path":261,"coverImage":262,"publishedAt":140,"order":111},"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":264,"description":265,"path":266,"coverImage":267,"publishedAt":140,"order":111},"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":269,"description":270,"path":271,"coverImage":272,"publishedAt":140,"order":111},"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":274,"description":275,"path":276,"coverImage":277,"publishedAt":140,"order":111},"Pupa","The pupa is the third stage of complete metamorphosis, when the caterpillar transforms into a butterfly — outwardly still, but rebuilding within.","\u002Fslovar\u002Fkukolka","\u002Fimages\u002Fslovar\u002Fkukolka.jpg",{"title":279,"description":280,"path":281,"coverImage":282,"publishedAt":140,"order":111},"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":284,"description":285,"path":286,"coverImage":287,"publishedAt":288,"order":111},"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":290,"description":291,"path":292,"coverImage":293,"publishedAt":294,"order":111},"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":296,"description":297,"path":298,"coverImage":299,"publishedAt":300,"order":111},"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":302,"description":303,"path":304,"coverImage":305,"publishedAt":140,"order":111},"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":307,"description":308,"path":309,"coverImage":310,"publishedAt":140,"order":111},"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":312,"description":313,"path":314,"coverImage":315,"publishedAt":316,"order":111},"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":318,"description":319,"path":320,"coverImage":321,"publishedAt":322,"order":111},"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",[324,326,328],{"label":61,"path":118,"description":119,"coverImage":325,"latinName":64},"\u002Fimages\u002Fvidy-babochek\u002Fvidy\u002Fmorfo-peleid.png",{"label":37,"path":121,"description":122,"coverImage":327,"latinName":42},"\u002Fimages\u002Fvidy-babochek\u002Fvidy\u002Fperlamutrovka-pandora.png",{"label":80,"path":124,"description":125,"coverImage":329,"latinName":111},"\u002Fimages\u002Fentsiklopediya\u002Fmimikriya-i-maskirovka.png",1787125907705]