Banded Hairstreak

satyrium calanus

The Banded Hairstreak (Satyrium calanus) is a charming and common butterfly found across eastern North America, known for its intricate wing patterns and playful flight. As part of the 'hairstreak' family, it exhibits characteristic delicate tails on its hindwings, which are thought to aid in predator evasion. This species is a familiar sight in deciduous woodlands and open areas during the summer months, often seen nectaring on various wildflowers. Its life cycle showcases a complete metamorphosis, with the caterpillars feeding on the leaves of oak, hickory, and walnut trees, while the adults fuel themselves with nectar, playing a small but vital role in pollination.

Habitat: Found primarily in deciduous woodlands, forest edges, clearings, old fields, and occasionally suburban gardens with ample host plants and nectar sources.

Appearance

This small butterfly typically measures between 2.5 and 3.5 cm in wingspan. The upperside of its wings is a uniform grayish-brown. The underside of the hindwings features a distinctive white postmedian line, often bordered inwardly by a row of orange-red spots. Near the two delicate tails on each hindwing, there are usually several small, iridescent blue spots, which can sometimes be obscured. The forewings on the underside are similarly grayish-brown with a faint white line.

KingdomAnimaliaPhylumArthropodaClassInsectaOrderLepidopteraFamilyLycaenidaeGenusSatyrium

Banded Hairstreak

Interesting facts

Banded Hairstreaks lay their eggs singly on the twigs or buds of host trees, where they overwinter and hatch in the spring.

Despite their small size, these butterflies can be quite feisty, sometimes engaging in territorial disputes with other butterflies.

The 'hairstreak' name refers to the fine, hair-like tails found on the hindwings of many species in this butterfly group.

They are often seen 'dancing' or rubbing their hindwings together, which enhances the false head illusion to divert predators.

Special abilities

The delicate tails and eye-spots on the hindwings create a 'false head' illusion, leading predators to strike at the less vital hindwing area, allowing the butterfly to escape with minor damage.

When resting with wings closed, the underside coloration and patterns blend effectively with bark or dried leaves, making it difficult for predators to spot them.

Adults exhibit a rapid and somewhat erratic flight, which can make them challenging for avian predators to track and catch in mid-air.

Measurements & details

Length: 0-1 cm
Wingspan: 2-3 cm
Weight: 0.0005-0.001 kg
Lifespan: 0 years
Clutch Size: 50-100

Diet & Feeding

As larvae, Banded Hairstreaks are herbivorous, feeding on tree leaves. Adults are nectarivorous, consuming nectar from various flowering plants.

Age differences: Larvae consume tree foliage, while adults primarily feed on flower nectar.

Primary Foods

Oak leaves
Hickory leaves
Walnut leaves
Milkweed nectar
Dogbane nectar
Sumac nectar

Foraging Method

Foraging

Ecological connections

host plant

Oak Tree

Quercus species

Primary larval food source

host plant

Hickory Tree

Carya species

Primary larval food source

nectar source

Common Milkweed

Asclepias syriaca

Adult nectar source

eaten by

Bird

Aves species

General predator

Traits

No trait badges are assigned for this object yet.

Also known as

No aliases listed yet.

Collections

Collections for this object will appear here as more themes are added.

Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Banded Hairstreak?

The easiest way to identify Banded Hairstreak is to use the Snappit nature identifier app.

How long is Banded Hairstreak?

0-1 cm

What is Banded Hairstreak's wingspan?

2-3 cm

How much does Banded Hairstreak weigh?

0.0005-0.001 kg

How long does Banded Hairstreak live?

0 years

What does Banded Hairstreak eat?

As larvae, Banded Hairstreaks are herbivorous, feeding on tree leaves. Adults are nectarivorous, consuming nectar from various flowering plants.

Where is Banded Hairstreak usually found?

Found primarily in deciduous woodlands, forest edges, clearings, old fields, and occasionally suburban gardens with ample host plants and nectar sources.

How does Banded Hairstreak hunt?

Foraging