Wild Facts About The Zebra Butterfly
The Striking And Unmistakable Zebra Butterfly
General Appearance Of Adult Zebra Butterflies
- No other butterfly can be mistaken for the Zebra Butterfly.
- This black and white butterfly species is both strikingly colored and large, with wing spans of 2.9 – 3.5 inches (7.4 – 8.9 cm).
- Males and females look similar except the wings of females are both larger than those of males and slightly thinner close to the wing base (Ramos-Pérez et al. 2020, https://doi.org/10.1371/journal.pone.0239620).
- Each black and white butterfly has:
- Long, thin, black antennae.
- A black thorax with pale yellow or white spots.
- A long, thin black abdomen.
- These butterflies appear to have only four legs, instead of the six expected of insects.
- The front pair of legs of brush-footed butterflies (those species classified in family Nymphalidae) are tiny, difficult to see, and not used for perching or walking.
Top Wing Surface (Dorsal)
- Zebra Longwing Butterflies spread their wings when perched, which makes it easy to see their bold, unmistakable colors and pattern.
- Their wings are elongated and narrow, unlike many other more common butterflies.
- Each wing is ebony black and decorated with several bright yellow, pale yellow, or white stripes.
- The final stripe nearest the trailing edge of the hind wings breaks into a row of small yellow or white spots.
Bottom Wing Surface (Ventral)
- The underside of this black and white butterfly’s wings are paler overall than dorsal wing surface.
- The dark gray wings have:
- A long, white or pale yellow stripe.
- Two pairs of red spots at wing bases.
- A row of elongated, yellow or white dots near trailing edge of hind wings.
Appearance Of Zebra Butterfly Caterpillars
- Like all butterfly species, Zebra Longwing caterpillars look nothing like the adult butterflies.
- Zebra Longwing caterpillars are white with small black spots and have:
- Numerous long black spines.
- Two spines project from the head.
- Three rows of spines run lengthwise on each side of their body.
- Red abdominal prolegs.
- Numerous long black spines.
- When ready to pupate, Zebra Longwing caterpillars spin mottled brown and spiny chrysalises decorated with metallic spots.
Go South To See Zebra Butterflies
- Zebra Butterflies live only in Florida, with occasional forays into Georgia and the southernmost tip of South Carolina during warm weather.
- They fly year-round in southern Florida and live up to three months—much longer than most wild butterflies.
- Look for these butterflies in:
- Woodlands,
- Along forest edges,
- Home gardens and landscaped areas with flowers.
- Like many butterflies, adult Zebra Butterflies feed on nectar.
- But they also feed on pollen.
- Zebra Longwings pre-digest pollen by inserting their proboscis into a flower, and secreting an enzyme that dissolves the grains.
- Then, they suck the resulting amino acid slurry up.
- Zebra Butterflies fly during the day (called day-active or diurnal) and roost in trees in large, communal groups.
Zebra Longwing Caterpillars Know How To Overcome Plant Defenses
- Zebra Butterfly larvae feed on plants in the Passionflower family (Passifloraceae).
- Purple Passionflower (Passiflora incarnata)
- Corky-Stemmed Passionflower
- Yellow Passionflower
- Incense Passionflower
- Passionflowers evolved structures called “trichomes” as a physical defense against herbivores like caterpillars.
- Growing from passionflower plant leaves, trichomes are hollow, hooked hairs that catch and trap caterpillars and other insects.
- Zebra Longwing caterpillars bypass this defense by:
- Biting off the hooked trichome tips as they move along the leaves (Cardoso 2008, https://doi.org/10.1590/S1519-566X2008000300002),
- Feeding from the underside of the plants,
- Spinning silk mats over the trichomes to cover the hooks.
Zebra Butterflies Aren’t Exactly Tasty Meals
- Both Zebra Longwing caterpillars and adults are toxic to many predators, thanks to the presence of chemicals called cyanogenic glycosides in their body tissues.
- Each black and white butterfly uses use some of the amino acids from pollen on which they feed to manufacture these glycosides.
- Both sexes sequester the chemicals in their body tissues.
- Males include some of their own glycosides in the spermatophores they offer to females as nuptial gifts when mating.
- Females then incorporate glycosides into their eggs, which transfers the chemical defense to the future caterpillars.
Male Zebra Butterflies Are Impatient Suitors
- Zebra Butterflies belong to a genus of butterflies that engage in two distinct mating strategies (Heliconius):
- Adult mating
- Pupal mating
- In adult mating, adult males pursue and mate with adult female butterflies.
- In pupal mating, males compete amongst themselves to guard female pupae and mate with the young, virgin females.
- A pupa is the intermediate form into which butterflies and moths develop as they metamorphose from caterpillars into winged adult butterflies.
- Pupae are protected by the chrysalises spun by the caterpillars.
- There are two forms of pupal mating:
- Pharate – an adult male breaks into the chrysalis, inserts his abdomen, and mates with the female within before she even emerges.
- Teneral – an adult male lurks on or very near the chrysalis, and mates with the female as she emerges.
- Zebra Longwings are one species within the genus that engage in pupal mating (Thurman et al. 2018, https://doi.org/10.1002/ece3.3624) but are not limited to this strategy.
- Males of this species will also mate with females in the traditional way.
- But while potentially costly to both females and males, pupal mating may:
- Save Zebra Longwing males some energy over time.
- Males need only ensure they are “on the spot” as opposed to having to pursue and court adult females who can fly away and choose between suitors.
- Ensure that each male’s genes carry into the next generation.
- Emerging females are slightly more likely to mate with only one male than free-flying females.
- Save Zebra Longwing males some energy over time.
Scientific Classification
|
Kingdom |
Animalia (animals) |
|
Phylum |
Arthropoda (arthropods) |
|
Class |
Insecta (insects) |
|
Order |
Lepidoptera (butterflies and moths) |
|
Family |
Nymphalidae (brush-footed butterflies) |
|
Genus |
Heliconius |
|
Species |
H. charithonia |
Scientific Name |
Heliconius charithonia |
Zebra Butterfly Photo Gallery
- Zebra Longwing Butterfly. Heliconius charithonia. Insect. Photograph taken and design created by the author. Copyright © 2025 Now I Wonder. All rights reserved.
- Zebra Longwing Butterfly. Heliconius charithonia. Insect. Photograph taken and design created by the author. Copyright © 2025 Now I Wonder. All rights reserved.
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