# Douglas-Fir Tussock Moth (*orgyia pseudotsugata*) The Douglas-Fir Tussock Moth is a fuzzy little caterpillar that loves to munch on Douglas-fir trees! Its unique tufts of hair make it look like it's wearing a fluffy coat. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 4 - **Habitat:** Douglas-fir forests in North America - **Also known as:** Douglas-Fir Moth, Fuzzy Caterpillar ![Douglas-Fir Tussock Moth](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Orgyia_pseudotsugata_adult.jpg&width=800) Photo: Jerald E. Dewey, CC BY 3.0 us · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Orgyia_pseudotsugata_adult.jpg) ## Appearance The Douglas-Fir Tussock Moth male is brownish-gray with wavy dark bands on its forewings and feathery antennae. Females are flightless, plump, and grayish-brown with tiny, vestigial wings. Caterpillars are covered in bristly hairs with distinctive red spots and hair tufts. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Lepidoptera - **Family:** Erebidae - **Genus:** Orgyia ## Interesting facts - Female moths have no wings, waiting patiently for males to find them! - Males find females by sniffing special chemical perfumes (pheromones) from far away! - Tiny caterpillar hairs can float in air, causing itchy rashes or eye irritation! - When populations boom, caterpillars can completely strip a forest of its needles! ## Special abilities - **Irritating Hairs:** Douglas-Fir Tussock Moth larvae have barbed hairs that cause rashes, helping them deter predators effectively. - **Flightless Female:** Douglas-Fir Tussock Moth has flightless females that release powerful pheromones to attract males from afar for mating. - **Silk Architect:** Douglas-Fir Tussock Moth caterpillars can spin silk to safely drop from branches or create cozy cocoons for pupation. ## Measurements & details - **Wingspan:** 20-30 mm - **Size:** 10-15 mm - **Lifespan:** 7-14 days - **Leg Count:** 6 ## Diet & Feeding Caterpillars munch on conifer needles, but the adult moths surprisingly don't eat anything at all! - **Age differences:** Only the caterpillar stage feeds on conifer needles; adult moths do not eat. - **Primary Foods:** Douglas-fir needles, Grand fir needles, White fir needles, Spruce needles - **Foraging Method:** Foraging ## Ecological connections - **Eats:** Douglas-fir (*Pseudotsuga menziesii*) — Caterpillars feed on its needles, sometimes causing severe defoliation. - **Eats:** [Grand Fir](https://www.snappit.app/explore/grand-fir) (*Abies grandis*) — Caterpillars consume its needles, potentially harming tree health and growth. - **Eaten by:** [Black-capped Chickadee](https://www.snappit.app/explore/black-capped-chickadee) (*Poecile atricapillus*) — These birds prey on caterpillars and pupae, helping control populations. - **Parasitizes:** Minute Egg Parasite Wasp (*Trichogramma minutum*) — Tiny wasps lay eggs inside moth eggs, controlling populations. ## 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. - [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. - [Diurnal](https://www.snappit.app/explore/traits/diurnal): Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night. ## Collections - [Insects](https://www.snappit.app/explore/collections/insects) ## Safety **Danger:** 1/5 · Very low Avoid touching the caterpillars as their hairs can cause irritation. ## Frequently Asked Questions ### How to identify Douglas-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 Douglas-Fir Tussock Moth's wingspan? 20-30 mm ### How big is Douglas-Fir Tussock Moth? 10-15 mm ### How long does Douglas-Fir Tussock Moth live? 7-14 days ### What does Douglas-Fir Tussock Moth eat? Caterpillars munch on conifer needles, but the adult moths surprisingly don't eat anything at all! ### Where is Douglas-Fir Tussock Moth usually found? Douglas-fir forests in North America ### How does Douglas-Fir Tussock Moth hunt? Foraging ### How many legs does Douglas-Fir Tussock Moth have? 6 ## Where to spot - [Barrio De Analco Historic District](https://www.snappit.app/guides/places/barrio-de-analco-historic-district) — New Mexico, US · Historic District - [Langford Lake Park](https://www.snappit.app/guides/places/langford-lake-park) — British Columbia, CA · Park - [Mountain Home Grove](https://www.snappit.app/guides/places/mountain-home-grove) — California, US · Forest [View all places to see Douglas-Fir Tussock Moth](https://www.snappit.app/guides/where-to-see/douglas-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*) --- Source: [Douglas-Fir Tussock Moth: Facts & Places to See — Snappit](https://www.snappit.app/explore/douglas-fir-tussock-moth)