# Western Giant Swallowtail (*Heraclides rumiko*) The Western Giant Swallowtail is a beautiful butterfly with big yellow and black wings. It loves to flutter around gardens and fields, bringing joy with its colorful presence. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 4 - **Habitat:** Urban areas, Gardens ![Western Giant Swallowtail](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Heraclides_rumiko_-_John_Rosford_-_326984665.jpeg&width=800) Photo: John Rosford, CC BY 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Heraclides_rumiko_-_John_Rosford_-_326984665.jpeg) ## Appearance The Western Giant Swallowtail is a very large butterfly, primarily yellow with bold, tiger-like black stripes and spots. Its hindwings feature blue and orange eyespots near the distinctive tail-like extensions. This striking pattern helps it stand out. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Lepidoptera - **Family:** Papilionidae - **Genus:** Papilio ## Interesting facts - Adults love to 'puddle' by gathering in groups on wet soil to drink mineral-rich water. - Female Western Giant Swallowtails lay their eggs one by one on host plant leaves. - Their caterpillars have special 'suckers' on their legs to cling tightly to leaves, even in the wind. - These giant butterflies can sometimes be mistaken for birds because of their enormous size! ## Special abilities - **Stinky Surprise:** Western Giant Swallowtail caterpillars can pop out bright orange, foul-smelling 'horns' (osmeteria) from behind their head that helps them scare away predators. - **Master of Flight:** Western Giant Swallowtails can soar powerfully on their large wings and glide long distances, helping them find food and mates across wide areas. - **Leafy Camouflage:** The adult Western Giant Swallowtail has intricate patterns on its underwings that help them blend perfectly with tree bark and leaves when resting. ## Measurements & details - **Wingspan:** 100-160 mm - **Size:** 25-35 mm - **Lifespan:** 30-270 days - **Flight Speed:** 20 km/h - **Leg Count:** 6 ## Diet & Feeding Caterpillars munch on plant leaves, while adults sip sweet flower nectar. - **Age differences:** Larvae eat leaves of host plants, while adults primarily feed on nectar from flowers. - **Primary Foods:** Citrus leaves, Prickly ash leaves (Zanthoxylum americanum), Rue leaves (Ruta graveolens), Nectar from various flowers, Sap - **Foraging Method:** Foraging ## Ecological connections - **Depends on:** Sweet Orange (*Citrus sinensis*) — Larvae feed on its leaves for growth and development. - **Depends on:** [Common Hoptree](https://www.snappit.app/explore/common-hoptree) (*Ptelea trifoliata*) — Caterpillars use its leaves as a primary food source. - **Eaten by:** [Western Kingbird](https://www.snappit.app/explore/western-kingbird) (*Tyrannus verticalis*) — Adult butterflies can be prey for this bird. - **Pollinates:** [Canada Goldenrod](https://www.snappit.app/explore/canada-goldenrod) (*Solidago canadensis*) — Adults visit flowers for nectar, aiding in plant reproduction. ## Traits - [Social](https://www.snappit.app/explore/traits/social): Social animals live in organized groups, cooperating for survival benefits such as foraging, defense, and raising offspring. - [Colorful](https://www.snappit.app/explore/traits/colorful): Colorful describes organisms or objects displaying a wide range of bright and distinct colors. - [Herbivorous](https://www.snappit.app/explore/traits/herbivorous): This trait characterizes organisms whose diet consists entirely or primarily of plant material. - [Pollinator Magnet](https://www.snappit.app/explore/traits/pollinator-magnet): Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms. - [Longevous](https://www.snappit.app/explore/traits/longevous): This trait characterizes organisms with an exceptionally long lifespan compared to others of their kind. - [Diurnal](https://www.snappit.app/explore/traits/diurnal): Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night. - [Giant](https://www.snappit.app/explore/traits/giant): Giant describes organisms or objects of significantly larger size than average for their species or type. - [Urban Friendly](https://www.snappit.app/explore/traits/urban-friendly): This habitat trait indicates species that can coexist with humans in urban and suburban environments, utilizing man-made structures and green spaces. - [Pollinator](https://www.snappit.app/explore/traits/pollinator): Describes organisms that transfer pollen, enabling the fertilization and reproduction of plants. ## Collections - [Insects](https://www.snappit.app/explore/collections/insects) ## Safety **Danger:** 1/5 · Very low Butterflies are gentle and safe to watch, but don't try to catch them. ## Frequently Asked Questions ### How to identify Western Giant Swallowtail? Compare the wing outline, spots, bands, eyespots and wing edges. The underside can look completely different from the top. Check for tails, the antennae and where the markings sit instead of relying on color alone. Butterfly Identifier: upload a photo and compare the visible details. ### What is Western Giant Swallowtail's wingspan? 100-160 mm ### How big is Western Giant Swallowtail? 25-35 mm ### How long does Western Giant Swallowtail live? 30-270 days ### How fast can Western Giant Swallowtail fly? 20 km/h ### What does Western Giant Swallowtail eat? Caterpillars munch on plant leaves, while adults sip sweet flower nectar. ### Where is Western Giant Swallowtail usually found? Urban areas, Gardens ### How does Western Giant Swallowtail hunt? Foraging ## Where to spot - [South Bonnie Brae Tract Historic District](https://www.snappit.app/guides/places/south-bonnie-brae-tract-historic-district) — California, US · Historic District - [California Botanic Garden](https://www.snappit.app/guides/places/california-botanic-garden) — California, US · Botanical Garden - [California Citrus State Historic Park](https://www.snappit.app/guides/places/california-citrus-state-historic-park) — California, US · State Park - [Los Angeles Plaza Historic District](https://www.snappit.app/guides/places/los-angeles-plaza-historic-district) — California, US · Historic District [View all places to see Western Giant Swallowtail](https://www.snappit.app/guides/where-to-see/western-giant-swallowtail) ## More Insects - [Common Eastern Bumble Bee](https://www.snappit.app/explore/common-eastern-bumble-bee) (*Bombus impatiens*) - [Spotted Lanternfly](https://www.snappit.app/explore/spotted-lanternfly) (*Lycorma delicatula*) - [Brown-belted Bumble Bee](https://www.snappit.app/explore/brown-belted-bumble-bee) (*Bombus griseocollis*) - [Eastern Carpenter Bee](https://www.snappit.app/explore/eastern-carpenter-bee) (*Xylocopa virginica*) --- Source: [Western Giant Swallowtail: Facts & Places to See — Snappit](https://www.snappit.app/explore/western-giant-swallowtail)