# Fir Tussock Moth (*Orgyia detrita*)

The Fir Tussock Moth is a fuzzy little insect that loves to munch on fir trees. Its soft, hairy body helps it blend in with its surroundings, making it hard to spot!

- **Category:** [Insects](https://www.snappit.app/explore/categories/insect)
- **Rarity:** Common
- **Danger:** 2/5 · Low
- **Snaps:** 9
- **Habitat:** Forests

![Fir Tussock Moth](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Fir_Tussock_Moth_Orgyia_detrita._Lymantriidae_%2834501423741%29.jpg&width=800)

Photo: gailhampshire from Cradley, Malvern, U.K, CC BY 2.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Fir_Tussock_Moth_Orgyia_detrita._Lymantriidae_%2834501423741%29.jpg)

## Appearance

The Fir Tussock Moth male is brownish-gray with distinctive feathery antennae and faint darker markings on its forewings. The female is strikingly different; she is wingless, plump, and has a pale grayish-yellow body covered in short hairs.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Lepidoptera
- **Family:** Erebidae
- **Genus:** Orgyia

## Interesting facts

- Caterpillars love to munch on needles from fir, spruce, and pine trees to grow!
- Male moths fly, but female moths are wingless and stay near their cocoons!
- Their cocoons are often camouflaged with the caterpillar's own spiky, irritating hairs.
- Touching this caterpillar's fuzzy hairs can cause an itchy rash on your skin!

## Special abilities

- **Stinging Touch:** Fir Tussock Moth larvae have fuzzy hairs that can irritate skin, protecting them from hungry birds.
- **Super Sniffer:** Fir Tussock Moth males have large feathery antennae that help them sniff out a female's scent from far away.
- **Hairy Hideaway:** Fir Tussock Moth larvae spin cocoons blended with their own spiky hairs, helping them hide from predators.
- **Ground Dweller:** The female Fir Tussock Moth has no wings, so she crawls to find a mate, laying eggs nearby.

## Measurements & details

- **Wingspan:** 25-30 mm
- **Size:** 10-20 mm
- **Lifespan:** 7-10 days
- **Leg Count:** 6

## Diet & Feeding

Young Fir Tussock Moths are herbivores, munching on tree needles to grow big and strong.

- **Age differences:** Adult moths do not feed, focusing solely on reproduction. Larvae (caterpillars) are the primary feeders.
- **Primary Foods:** Abies balsamea (Balsam Fir), Picea glauca (White Spruce), Pinus taeda (Loblolly Pine), Tsuga canadensis (Eastern Hemlock)
- **Foraging Method:** Foraging

## Ecological connections

- **Depends on:** [Balsam Fir](https://www.snappit.app/explore/balsam-fir) (*Abies balsamea*) — Caterpillars feed on its needles, sometimes causing significant defoliation.
- **Depends on:** [White Spruce](https://www.snappit.app/explore/white-spruce) (*Picea glauca*) — A primary food source for the caterpillar stage of the moth.
- **Eaten by:** [Blue Jay](https://www.snappit.app/explore/blue-jay) (*Cyanocitta cristata*) — Birds, including jays, are known predators of the larvae and pupae.
- **Parasitizes:** Chalcid Wasp (*Brachymeria intermedia*) — This wasp lays eggs inside tussock moth pupae, killing the host.

## Traits

- [Furry](https://www.snappit.app/explore/traits/furry): Furry describes animals possessing a dense covering of soft hair or fur.
- [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care.
- [Camouflaged](https://www.snappit.app/explore/traits/camouflaged): Camouflaged describes organisms that possess coloring or patterns that allow them to blend into their environment.
- [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.
- [Nocturnal](https://www.snappit.app/explore/traits/nocturnal): Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day.

## Collections

- [Insects](https://www.snappit.app/explore/collections/insects)

## Safety

**Danger:** 2/5 · Low

Don't touch moths or caterpillars without asking an adult, as some can be prickly or have chemicals that irritate the skin.

## Frequently Asked Questions

### How to identify Fir Tussock 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 Fir Tussock Moth's wingspan?

25-30 mm

### How big is Fir Tussock Moth?

10-20 mm

### How long does Fir Tussock Moth live?

7-10 days

### What does Fir Tussock Moth eat?

Young Fir Tussock Moths are herbivores, munching on tree needles to grow big and strong.

### Where is Fir Tussock Moth usually found?

Forests

### How does Fir Tussock Moth hunt?

Foraging

### How many legs does Fir Tussock Moth have?

6

## Where to spot

- [Ebenezer](https://www.snappit.app/guides/places/ebenezer) — Georgia, US · Neighborhood
- [Savannah–Ogeechee Canal](https://www.snappit.app/guides/places/savannah-ogeechee-canal) — Georgia, US · Historic Site
- [Florida Botanical Gardens](https://www.snappit.app/guides/places/florida-botanical-gardens) — Florida, US · Botanical Garden
- [Fort Frederica National Monument](https://www.snappit.app/guides/places/fort-frederica-national-monument) — Georgia, US · National Park
- [Jekyll Island](https://www.snappit.app/guides/places/jekyll-island) — Georgia, US · Natural Landmark
- [Kanapaha Botanical Gardens](https://www.snappit.app/guides/places/kanapaha-botanical-gardens) — Florida, US · Botanical Garden

[View all places to see Fir Tussock Moth](https://www.snappit.app/guides/where-to-see/fir-tussock-moth)

## 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*)

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Source: [Fir Tussock Moth: Facts & Places to See — Snappit](https://www.snappit.app/explore/fir-tussock-moth)
