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Species Profile

Swallowtail Butterfly

Papilionidae

Big wings, bold tails, secret defenses
iStock.com/wayne stockburger

Swallowtail Butterfly Distribution

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Found in 56 countries

Texas Thistle

At a Glance

Family Overview This page covers the Swallowtail Butterfly family as a group. Stats below are general traits shared across the family.
Diet Herbivore
Activity Diurnal+
Lifespan 6 years
Weight 0.01 lbs
Status Not Evaluated
Did You Know?

Papilionidae includes both tailed and tailless species-"swallowtail" is common, not universal.

Scientific Classification

Family Overview "Swallowtail Butterfly" is not a single species but represents an entire family containing multiple species.

Swallowtail butterflies are members of the family Papilionidae, a globally distributed group of often large, showy butterflies. Many species have tail-like extensions on the hindwings (the "swallowtail"), though some papilionids lack prominent tails.

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Family
Papilionidae

Distinguishing Features

  • Often large wingspan relative to many other butterflies
  • Frequent presence of tail-like hindwing projections (not universal)
  • Bold contrasting wing patterns (bands, tiger stripes, or dark iridescent forms)
  • Caterpillars commonly possess an eversible defensive organ (osmeterium) that emits odors
  • Many exhibit mimicry and/or warning coloration; some sequester plant toxins via larval host plants

Physical Measurements

Males and females differ in size

Weight
♂ 0 lbs (0 lbs – 0 lbs)
♀ 0 lbs (0 lbs – 0 lbs)
Tail Length
♂ Up to 2 in
♀ Up to 2 in
Top Speed
22 mph
flying

Appearance

Skin Type Adults have scale-covered wings and a chitinous exoskeleton; larvae are soft-bodied with a smooth-to-finely textured cuticle and an eversible osmeterium; pupae (chrysalids) are rigid and angular or leaflike, often with cryptic coloration.
Distinctive Features
  • Adult wingspan across the family ranges roughly 4-28 cm (smallest to largest members).
  • Adult body length varies widely, typically a few centimeters, with the largest species reaching about 8 cm (depending on species and sex).
  • Many species have hindwing tail-like extensions; others have short tails or none.
  • Hindwings often show submarginal spot rows or eyespots; tails may act as decoys.
  • Larvae possess an eversible osmeterium (often orange/red) that emits defensive odors.
  • Caterpillar appearance varies: bird-dropping mimicry in early instars is common; later instars may be green with eyespots or boldly patterned.
  • Chrysalids may be green or brown, often angular; temperate members commonly overwinter as pupae.
  • Wing coloration spans cryptic browns to high-contrast aposematic and mimicry patterns, reflecting strong geographic and ecological diversification.
  • Flight silhouettes range from compact swallowtails to very large, soaring tropical forms.

Sexual Dimorphism

Sexual dimorphism is common but inconsistent across the family. Males are often brighter or more iridescent and may patrol or hilltop; females are frequently larger and may be duller or mimic distasteful butterflies, though some species show little difference.

♂
  • Brighter dorsal coloration or stronger iridescent blue/green sheen in many species.
  • More frequent hilltopping/patrolling behaviors that favor conspicuous wing displays.
  • Scent scales/androconia or specialized scaling may be present in some taxa.
♀
  • Often slightly larger-bodied with greater abdomen volume for egg production.
  • More frequent occurrence of mimicry morphs and reduced conspicuousness in some groups.
  • In some lineages, tail length/shape and marginal spotting can differ from males.

Did You Know?

Papilionidae includes both tailed and tailless species-"swallowtail" is common, not universal.

Family size spans some of the world's biggest butterflies (birdwings, Ornithoptera) with wingspans approaching ~25-28 cm.

Many swallowtail caterpillars deploy a forked, orange-red osmeterium that releases strong-smelling chemicals when threatened.

Host-plant specialization is common: many species key in on certain plant families (e.g., citrus, carrots/parsley, pipevines), but the family as a whole uses a wide variety.

Adults often "puddle": males sip mineral-rich moisture from mud, sand, or dung to obtain salts for reproduction.

Some swallowtails are famous mimics-certain females closely resemble toxic butterflies to deter predators.

Temperate species commonly overwinter as chrysalids (pupae), while many tropical species can breed in multiple generations per year.

Unique Adaptations

  • Osmeterium in larvae: an eversible gland that can deter ants, spiders, and small vertebrate predators with repellent odors/chemicals.
  • Tail-like hindwing extensions (when present) can help misdirect attacks toward expendable wing margins; some species also have eyespots to enhance the decoy.
  • Chemical defenses via host plants: several lineages (notably pipevine-feeding groups) can acquire or synthesize deterrent compounds, supporting warning colors and mimicry.
  • Chrysalis camouflage and fastening: pupae typically use a silk "girdle" plus cremaster, often matching twigs, bark, or leaf litter; many can enter long diapause through winter or dry seasons.
  • Robust wing musculature and efficient flight support long-distance dispersal in some species; others are localized endemics-showing the family's ecological breadth.

Interesting Behaviors

  • Powerful, fast flight and wide-ranging movement; in some species males patrol large territories, while others follow forest edges or river corridors.
  • Hilltopping: males of various species gather on ridgelines and peaks to find mates; intensity varies by habitat and season.
  • Puddling and mineral foraging: especially common in males, sometimes in large mixed-species groups.
  • Basking and wing-posture diversity: many hold wings open to warm up, while others angle wings to manage heat and glare.
  • Oviposition precision: females often "drum" leaves with their forelegs to chemically assess host plants; host specificity ranges from narrow specialists to broader generalists within the family.
  • Seasonal forms and timing: some species show wet/dry-season morphs in the tropics; temperate species often have one to several broods with overwintering pupae.

Cultural Significance

Swallowtail butterflies (Papilionidae) are famous in art, education, stamps, and nature tourism. Many need specific caterpillar host plants and healthy habitats, so they show when ecosystems change. Planting host plants (citrus relatives, parsley/carrot family, pipevines) helps local swallowtail diversity.

Myths & Legends

Greek naming tradition: some famous swallowtails were named for characters from legend (for example, Papilio machaon for Machaon, healer at Troy, and Papilio ulysses for Odysseus), reflecting 18th–19th century classical allusions.

Japan: butterflies are longstanding symbols of the soul and transformation; in traditional Japanese art, a pair of butterflies can symbolize marital happiness-imagery that often includes large, showy butterflies akin to swallowtails.

China: the "butterfly lovers" tradition (Liang Shanbo and Zhu Yingtai) ends with the lovers transformed into butterflies, a widely told story linking butterflies with enduring love and metamorphosis.

Hopi (Southwestern U.S.): Butterfly Dance traditions celebrate renewal and the connection between insects, flowers, and seasonal cycles; butterflies (including large species such as swallowtails in the region) are part of this broader cultural symbolism.

Aztec mythology: Itzpapalotl, the "Obsidian Butterfly," is a powerful, fearsome figure associated with warrior afterlife and transformation; while not tied to a single species, it shows the deep mythic role of butterflies in Mesoamerican traditions.

Conservation Status

NE Not Evaluated (family-level; Papilionidae species span multiple IUCN categories)

Has not yet been evaluated against the criteria.

Population Unknown

You might be looking for:

Old World swallowtail

18%

Papilio machaon

Widespread Palearctic swallowtail; yellow with bold black patterning and tail-like hindwing projections.

Giant swallowtail

16%

Papilio cresphontes

Large North American swallowtail; black with yellow bands; larvae resemble bird droppings when young.

Spicebush swallowtail

12%

Papilio troilus

Eastern North America; dark swallowtail with blue-green iridescence and pale spots; larvae feed on spicebush/sassafras.

Eastern tiger swallowtail

12%

Papilio glaucus

Common North American tiger-striped swallowtail; strong sexual dimorphism; yellow-and-black females may be dark morphs.

View Profile

Pipevine swallowtail

10%

Battus philenor

Dark swallowtail with iridescent blue hindwings; larvae feed on Aristolochia (pipevines) and sequester toxins.

Scarce swallowtail

8%

Iphiclides podalirius

European species with long tails and pale yellow wings with black tiger-like stripes.

Life Cycle

Birth 200 caterpillars
Lifespan 6 years

Lifespan

In the Wild
1–24 years
In Captivity
1–30 years

Reproduction

Mating System Promiscuity
Social Structure Solitary
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Across Papilionidae, males typically patrol, perch, or hilltop to locate females and may mate repeatedly; females can mate once or multiple times depending on species. Copulation transfers a spermatophore via internal fertilization; no pair bonds or parental care.

Behavior & Ecology

Social Puddle congregation Group: 5
Activity Diurnal, Matutinal, Vespertine
Diet Herbivore Floral nectar (adults) and fresh host-plant leaves (caterpillars), varying widely by species and region
Seasonal Hibernates 621 mi

Temperament

Generally non-aggressive and non-social; avoidance and spacing are common during foraging.
Males of many species show territoriality (hilltopping, patrolling, perching) with short chases.
Bold, wide-ranging flight in open habitats; more cautious, understory-hugging flight in forest species.
Larvae are typically solitary; limited gregariousness occurs in a few lineages and early instars.

Communication

None known No true vocalizations
Sex pheromones and contact chemoreception (antennae/legs) for mate recognition and courtship.
Visual signaling via wing color/UV patterning; flight displays during courtship and territorial chases.
Chemical cues and antiaphrodisiacs transferred during mating that can reduce subsequent male courtship.
Oviposition decisions guided by host-plant volatiles and leaf-surface chemistry; learning varies among species.
Tactile interactions during mating (wing fluttering, abdominal contact) and during brief male-male contests.

Habitat

Biomes:
Tropical Rainforest Tropical Dry Forest Savanna Desert Hot Desert Cold Mediterranean Temperate Grassland Temperate Forest Temperate Rainforest Boreal Forest (Taiga) Tundra Alpine Freshwater Wetland +8
Terrain:
Mountainous Hilly Plateau Plains Valley Coastal Island Riverine Volcanic Karst Rocky Sandy Muddy +7
Elevation: Up to 17060 ft 5 in

Ecological Role

Plant-based consumers with a dual role as larval herbivores and adult nectar-feeding pollinators within terrestrial ecosystems, forming important prey for higher trophic levels.

Pollination of wildflowers (and occasionally crops) through adult nectar visitation Herbivory that can influence host-plant growth and community dynamics (larval feeding) Nutrient and mineral cycling via puddling behavior and movement among resource patches Food-web support as common prey for birds, reptiles, spiders, and other insect predators/parasitoids

Diet Details

Other Foods:
Larval host-plant foliage Floral nectar Pollen/nectar-associated exudates Plant sap and aphid honeydew Overripe fruit juices Mineral-rich mud, puddles, and wet soil

Human Interaction

Domestication Status

Wild

Swallowtail butterflies (Papilionidae) have no true domesticated forms. People collect and study them, manage gardens to attract them, and run commercial farms for shows and education. Some species are mass-reared in butterfly houses, but this is captive rearing, not bred for many generations. Trade rules vary; large birdwings are often more strictly controlled.

Danger Level

Low
  • Allergic reactions or irritation from contact with butterfly scales/dust in sensitive individuals (uncommon but possible)
  • Mild skin/eye irritation from defensive chemicals in larvae (e.g., osmeterium secretions) if handled roughly
  • Indirect risk via host plants: some swallowtail larvae feed on toxic plants (e.g., Aristolochiaceae), so improper handling/ingestion is a concern mainly for pets/children around host plants rather than the butterflies themselves
  • Garden/crop damage in localized situations when larvae feed on cultivated host plants (economic nuisance rather than direct human harm)

As a Pet

Suitable as Pet

Legality: Laws differ by place. Rearing common local swallowtails (Papilionidae) on allowed host plants is often legal for personal learning, but wild collecting and some species (e.g., Ornithoptera) may be protected or under CITES rules. Check local laws.

Care Level: Moderate

Purchase Cost: Up to $200
Lifetime Cost: $20 - $500

Economic Value

Uses:
Education and outreach (butterfly houses, school rearing kits) Ecotourism and nature-based recreation Scientific research (ecology, evolution, mimicry, conservation) Horticulture/gardening (host and nectar plant sales; pollinator-friendly landscaping) Commercial insect farming and live exhibits Collectibles/trade (regulated in some cases) Agriculture (both beneficial pollinators and, for some species, crop/ornamental pests at the larval stage)
Products:
  • Live pupae/chrysalides for exhibits (where legal)
  • Rearing supplies (mesh cages, host plants, artificial nectar/feeding setups)
  • Educational kits and curricula
  • Museum specimens and reference collections (historical and ongoing, regulated)
  • Guided tours/photography and butterfly-watching experiences
  • Horticultural plants used as larval hosts and adult nectar sources
  • Pest management costs in cases where larvae feed on cultivated plants (e.g., citrus-feeding swallowtails in some regions)

Relationships

Related Species 5

Whites, sulfurs, and yellows Pieridae Shared Family
Brush-footed butterflies
Brush-footed butterflies Nymphalidae Shared Family
Gossamer-winged butterflies Lycaenidae Shared Family
Metalmarks Riodinidae Shared Order
Skippers Hesperiidae Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Hawk moths Sphingidae They strongly overlap in nectar-feeding ecology (often visiting the same flowering plants), have strong/fast flight and long-distance movement, and occupy similar pollinator roles in many habitats despite being moths.
Monarchs and related milkweed butterflies Danaus spp. Parallel use of toxic host plants and chemical defenses (sequestration) and participation in mimicry systems; predators learn to avoid both groups in many regions.
Longwings Heliconius spp. Share aposematism and mimicry dynamics and frequently visit flowers; species in this group are important components of tropical mimicry rings.
Clearwing butterflies Ithomiini Share warning coloration and participate in mimicry networks. Many papilionids—especially toxic Aristolochia-feeding lineages—co-occur with and either mimic or are mimicked by chemically defended butterflies.
Day-flying swallowtail-like moths Uraniidae Convergent appearance and behavior: large, showy, diurnal fliers that nectar at flowers and can be confused with swallowtail butterflies at a glance in the tropics.

Types of Swallowtail Butterfly

20

Explore 20 recognized types of swallowtail butterfly

Old World Swallowtail Papilio machaon
Eastern Tiger Swallowtail
Eastern Tiger Swallowtail Papilio glaucus
Giant Swallowtail Papilio cresphontes
Spicebush Swallowtail Papilio troilus
Black Swallowtail
Black Swallowtail Papilio polyxenes
Lime Swallowtail Papilio demoleus
Great Mormon Papilio memnon
Scarlet Mormon Papilio rumanzovia
Common Bluebottle Graphium sarpedon
Tailed Jay Graphium agamemnon
Green Dragontail Lamproptera meges
Scarce Swallowtail Iphiclides podalirius
Pipevine Swallowtail Battus philenor
Gold Rim Swallowtail Battus polydamas
Common Rose Pachliopta aristolochiae
Crimson Rose Pachliopta hector
Apollo Parnassius apollo
Phoebus Apollo Parnassius phoebus
Common Birdwing Troides helena
Queen Alexandra's Birdwing Ornithoptera alexandrae

Did you know that there are approximately 600 species of Swallowtail butterflies? Swallowtail butterflies, in the family Papilionidae, have distinctive tail-like extensions on their hindwings, which resemble the tails of swallows. Swallowtails live on every continent except Antarctica. They typically feed on nectar from flowers and are important pollinators. Keep reading to learn more about Swallowtail butterflies.

Giant swallowtail butterfly

Swallowtails live on every continent except Antarctica.

Incredible Swallowtail Butterfly Facts:

  • Swallowtail butterflies have a distinctive forked tail on their hind wings that resembles a swallow’s tail, which gives them their name.
  • The caterpillars of some swallowtail species have a false head on the back of their bodies, which they can use to distract predators.
  • The Eastern Tiger Swallowtail butterfly is one of the most common and widely distributed swallowtail species in North America.
  • The Black Swallowtail butterfly has a wingspan of up to 4 inches and is found in gardens and meadows.
  • Adult Swallowtails feed on nectar from flowers, while the caterpillars feed on plants such as dill, fennel, and parsley.
  • Some species of swallowtail butterflies, such as the Papilio polytes, exhibit mimicry in which females mimic inedible species for protection against predators.
Two-tailed swallowtail butterfly collecting nectar from flower

Swallowtail butterflies have distinctive forked tails on their hind wings.

Swallowtail Butterfly: Scientific Name

The scientific name for the swallowtail butterfly is Papilionidae, which is Latin for butterfly. There are about 600 separate species of swallowtail butterflies. Each one of these species has a unique scientific name. For example, the old world Swallowtail butterfly is the Papilo machaon. It is named for the Greek physician Machaon, who is said to have been able to heal wounds with the help of swallowtail butterflies. The tiger swallowtail, Papilio glaucus, is a brightly colored swallowtail revered for its orange and black tiger stripes. Papilo, which is Latin for butterfly, and glaucus, which is Latin for bright, gleaming, or sparkling, references the tiger swallowtail’s bright colors.

Western Tiger Swallowtail (Papilio rutulus)

The tiger swallowtail, Papilio glaucus, is a brightly colored swallowtail revered for its orange and black tiger stripes.

Swallowtail Butterfly: Appearance and Behavior:

Swallowtail butterflies have large, colorful wings, patterned with black and yellow or black and white. They have a distinctive tail on their hindwings, which gives them their name. The body of a swallowtail butterfly is typically thin and elongated, and they have large, compound eyes. The wingspan of a swallowtail butterfly can range from 5 – 15 centimeters (2 to 6 inches). Swallowtails weigh between 0.04 – 0.3 grams (0.0014 – 0.0105 ounces).

Swallowtails are active during the day, flying and feeding on nectar from flowers. They are strong fliers that have a distinctive flutter flight pattern when they are looking for a place to rest. Though swallowtails are typically solitary creatures, they will occasionally gather to puddle. Puddling involves a group of swallowtails coming together in marshy, damp areas to acquire the nutrients that have leeched from the soil.

Giant swallowtail butterfly (Papilio cresphontes) feeding on white wildflowers.

Swallowtail butterflies have large, colorful wings, patterned with black and yellow or black and white.

Though usually docile creatures, male swallowtails can become quite aggressive during mating season and when defending their territory. Adult female swallowtails typically lay their eggs on the leaves of host plants, which include fennel, parsley, and dill. Once the eggs hatch, the caterpillars feed on the leaves.

Swallowtail Butterfly: Habitat

Swallowtails are found everywhere in the world except for Antarctica. A swallowtail butterfly’s habitat can vary depending on the species, but many species are found in wooded areas, gardens, and fields. They are typically found near sources of nectar, such as flowers, as well as near their host plants, fennel, parsley, and dill, which are used for laying eggs. Some species live near swamps, marshes, or rainforests. Other species prefer mountainous or coastal areas. Swallowtails are less common in arid or desert regions. Overall, swallowtail butterflies live in a wide variety of habitats, but they all require a source of nectar and a host plant for their survival.

Texas Thistle

A swallowtail butterfly’s habitat can vary depending on the species, but many species are found in wooded areas, gardens, and fields.

Migration

Swallowtail butterflies, including species such as the Eastern Tiger Swallowtail and the Canadian Tiger Swallowtail, migrate seasonally. These migrations typically occur in the spring and fall and may involve butterflies traveling hundreds or even thousands of miles. The triggers and mechanisms that affect migration are not fully understood. They are thought to be influenced by such factors as temperature, food availability, and changes in daylight. Some species of swallowtail butterflies have multiple generations in a year. The young of the second and third generations may migrate to different regions. This leads to the establishment of new populations. Swallowtails may be seen in large numbers, during migration, with individuals flying in a southwesterly direction during the spring and a northeasterly direction during the fall.

Slowest animals in North America

Swallowtail butterflies migrate seasonally.

Swallowtail Butterfly: Diet

Colorful swallowtail butterflies have a diverse diet, which includes a variety of different plants. They feed on the nectar of a wide range of flowers, including thistles, clovers, and milkweeds. Some species of swallowtail butterflies also feed on rotting fruit and tree sap. Swallowtails have a preference for red, orange, and yellow flowers. Their diet plays a key role in their survival and reproduction.

Butterfly on verbena flower

Swallowtails feed on plant nectar.

Swallowtail Butterfly: Predators and Threats

Swallowtail butterflies, like many other butterfly species, have a variety of natural predators. Birds such as robins and bluejays are known to eat adult butterflies, while lizards and spiders may prey on both adult butterflies and their larvae.
Habitat destruction is a major threat to swallowtail butterflies and many other species. Swallowtail butterflies lose their host plants, nectar sources, and breeding sites, as natural areas are cleared for human development or agriculture. Pesticides, which are used to control crop pests, can also be toxic to butterflies, killing both adult butterflies and their larvae.
Climate change is also affecting swallowtail butterfly populations. Rising temperatures and changing precipitation patterns can affect the timing of butterfly emergence, migration, and mating, leading to mismatches between butterflies and their food plants. Warmer temperatures may also lead to an increase in the range and population of predators, such as birds and insects that feed on butterflies, further reducing butterfly populations.

Blue jay perched on branch with back to camera

Birds such as bluejays are known to eat adult butterflies.

Conservation Status

Some species of swallowtail butterflies are considered endangered or threatened, while others are not. For example, The Schaus’ swallowtail butterfly (Heraclides aristodemus ponceanus) is listed as an endangered species in the U.S. The Eastern tiger swallowtail’s(Papilio glaucus) conservation status is classified as one of least concern. The status of a particular species can vary depending on factors such as population size, distribution, and the threats it faces. The population of swallowtail butterflies varies depending on the specific species and location.

Photograph of a mountain top that has been destroyed by logging. Brownish red dirt is visible where all of the trees have been clear-cut. Many tree trunks are seen in the center frame. The destroyed mountaintop is dimmed with live, green trees. In the background are mountain tops that have not been destroyed.

Habitat destruction is destabilizing to certain swallowtail species.

Some populations may be stable or increasing, while others may be decreasing. Factors such as habitat loss, pollution, and climate change affect swallowtail populations. The availability of their host plants and the presence of natural predators affect the swallowtail population. Conservation efforts, such as habitat restoration and protection, can help to support and improve swallowtail butterfly populations. It is important to note that the conservation status of a species can change over time as a result of changes in population size or the severity of threats it faces.

Swallowtail Butterfly: Lifecycle

The lifecycle of a swallowtail butterfly typically includes four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. The female butterfly lays her eggs on the leaves of host plants. The eggs hatch into larvae (caterpillars), which feed on the leaves or stems of host plants. After several weeks of feeding and growing, the caterpillar enters the pupal stage, where it forms a chrysalis. Inside the chrysalis, the caterpillar undergoes metamorphosis and emerges as an adult butterfly.
Adult swallowtail butterflies have a lifespan of about 2 to 4 weeks.

15 bright orange pipevine swallowtail butterfly eggs ar visible on a yellow-green pipevine stem.

The female butterfly lays her eggs on the leaves or stems of host plants.

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Sources

  1. butterfly.com / Accessed January 18, 2023
  2. naba.org / Accessed January 18, 2023
  3. wikipedia.org / Accessed January 18, 2023
Kathryn Koehler

About the Author

Kathryn Koehler

Kathryn Koehler is a writer at A-Z-Animals where her focus is on unusual animals, places, and events. Kat has over 20 years of experience as a professional writer and educator. She holds a master's degree from Vanderbilt University. When she is not writing for A-Z-Animals, Kat enjoys puttering in her garden, baking deliciously healthful treats for her family, and playing with her two rescue mutts, Popcorn and Scooter. She resides in Tennessee.

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Swallowtail Butterfly FAQs (Frequently Asked Questions)

There are approximately 600 different species of swallowtail butterflies