# Ceanothus Silk Moth (*Hyalophora euryalus*)

The Ceanothus Silk Moth is a big, fluffy moth with beautiful blue and yellow colors. They are often found resting on trees and are known for their soft, silky wings.

- **Category:** [Insects](https://www.snappit.app/explore/categories/insect)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Snaps:** 2
- **Habitat:** Forests

![Ceanothus Silk Moth](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Ceanothus_Moth.jpg&width=800)

Photo: Linda Tanner, CC BY 2.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Ceanothus_Moth.jpg)

## Appearance

The Ceanothus Silk Moth has large, reddish-brown wings adorned with wavy white, pink, or purple bands and prominent crescent-shaped eye-spots on each wing. Its furry body adds to its robust appearance, making it distinct among North American moths.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Lepidoptera
- **Family:** Saturniidae
- **Genus:** Hyalophora

## Interesting facts

- Adult Ceanothus Silk Moths do not have mouths and cannot eat! They survive on stored energy.
- Caterpillars eat so much, they shed their skin five times before becoming a pupa!
- Its enormous wings are covered in tiny, colorful scales, creating beautiful patterns.
- Males have huge, feathery antennae that can smell a female moth from miles away.

## Special abilities

- **Winged Defense:** Ceanothus Silk Moth has large eye-spots on its hindwings that can startle predators, helping them escape danger.
- **Pheromone Navigator:** Female moths release a special scent (pheromone) that helps male moths find them from miles away for mating.
- **Silk Weaver:** As caterpillars, they spin strong, silken cocoons around themselves to safely transform into adult moths.
- **Master Camouflage:** Young caterpillars are bright green, helping them blend perfectly with the leaves they munch on, hiding from predators.

## Measurements & details

- **Wingspan:** 80-130 mm
- **Size:** 25-35 mm
- **Lifespan:** 7-14 days
- **Flight Speed:** 20 km/h
- **Leg Count:** 6

## Diet & Feeding

Adults don't eat at all, living off stored energy, while caterpillars are hungry leaf-munchers!

- **Age differences:** Adults do not feed; caterpillars are herbivores that consume host plant leaves.
- **Primary Foods:** Ceanothus leaves, Cherry leaves, Willow leaves, Alder leaves, Birch leaves
- **Foraging Method:** Foraging

## Ecological connections

- **Eats:** Deer Brush (*Ceanothus integerrimus*) — Caterpillars feed on its leaves
- **Eats:** [Chokecherry](https://www.snappit.app/explore/chokecherry) (*Prunus virginiana*) — Caterpillars consume its foliage
- **Eaten by:** [Little Brown Bat](https://www.snappit.app/explore/little-brown-bat) (*Myotis lucifugus*) — Adult moths are preyed upon
- **Eaten by:** [Deer Mouse](https://www.snappit.app/explore/deer-mouse) (*Peromyscus maniculatus*) — Larvae and pupae can be eaten

## Traits

- [Furry](https://www.snappit.app/explore/traits/furry): Furry describes animals possessing a dense covering of soft hair or fur.
- [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.
- [Forest](https://www.snappit.app/explore/traits/forest): Forest habitats are terrestrial environments dominated by dense tree cover, supporting a high diversity of plant and animal life.
- [Giant](https://www.snappit.app/explore/traits/giant): Giant describes organisms or objects of significantly larger size than average for their species or type.
- [Nocturnal](https://www.snappit.app/explore/traits/nocturnal): Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day.
- [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

Moths are generally safe to observe, but don’t touch them as they can be delicate.

## Frequently Asked Questions

### How to identify Ceanothus Silk Moth?

Compare resting wing shape, forewing markings, antennae and body build. Small brown moths can hinge on fine details a phone photo can't always catch. Moth Identifier: upload a photo and compare the visible details.

### What is Ceanothus Silk Moth's wingspan?

80-130 mm

### How big is Ceanothus Silk Moth?

25-35 mm

### How long does Ceanothus Silk Moth live?

7-14 days

### How fast can Ceanothus Silk Moth fly?

20 km/h

### What does Ceanothus Silk Moth eat?

Adults don't eat at all, living off stored energy, while caterpillars are hungry leaf-munchers!

### Where is Ceanothus Silk Moth usually found?

Forests

### How does Ceanothus Silk Moth hunt?

Foraging

## Where to spot

- [Benbow Lake State Recreation Area](https://www.snappit.app/guides/places/benbow-lake-state-recreation-area) — California, US · State Park
- [Manito Park and Botanical Gardens](https://www.snappit.app/guides/places/manito-park-and-botanical-gardens) — Washington, US · Botanical Garden

## 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: [Ceanothus Silk Moth: Facts & Places to See — Snappit](https://www.snappit.app/explore/ceanothus-silk-moth)
