# Western Spruce Budworm Moth (*Choristoneura occidentalis*) The Western Spruce Budworm Moth is a small, fuzzy moth that loves to hide in trees. It has beautiful brown and gray wings that help it blend in with its forest home. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Forests ![Western Spruce Budworm Moth](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Choristoneura_freemani_Razowski%252C_2008.jpg&width=800) Photo: Jeffrey J. Witcosky, USDA Forest Service, Public domain · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Choristoneura_freemani_Razowski%252C_2008.jpg) ## Appearance The Western Spruce Budworm Moth has mottled grey-brown forewings, often with indistinct dark spots or bands, and pale hindwings. Its coloration provides excellent camouflage, making it blend seamlessly with tree bark and dried foliage. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Lepidoptera - **Family:** Tortricidae - **Genus:** Choristoneura ## Interesting facts - Huge outbreaks can make entire forests appear reddish-brown, as if they are scorched! - Sometimes, millions of these tiny moths will fly at once, appearing like a living cloud! - The caterpillars chew tunnels into tree buds, then feast on the growing needles inside. - Their populations naturally boom and bust, sometimes causing outbreaks for a decade! ## Special abilities - **Stealthy Camouflage:** Western Spruce Budworm Moth has mottled grey-brown wings that help them blend seamlessly into tree bark, avoiding predators. - **Pheromone Navigator:** Western Spruce Budworm Moth can release special scents (pheromones) that help them find mates from a distance, ensuring reproduction. - **Egg Strategist:** Western Spruce Budworm Moth can lay clusters of eggs on conifer needles, allowing new larvae to emerge directly onto their food source. ## Measurements & details - **Wingspan:** 20-30 mm - **Size:** 8-12 mm - **Lifespan:** 10-14 days - **Leg Count:** 6 ## Diet & Feeding Larvae eat tree buds and needles; adult moths do not feed. - **Age differences:** Larvae consume tree foliage and buds; adult moths do not feed. - **Primary Foods:** Picea engelmannii, Abies grandis, Pseudotsuga menziesii, Larix occidentalis - **Foraging Method:** Foraging ## Ecological connections - **Eats:** [Engelmann Spruce](https://www.snappit.app/explore/engelmann-spruce) (*Picea engelmannii*) — Its larvae defoliate the needles and buds. - **Eats:** [Grand Fir](https://www.snappit.app/explore/grand-fir) (*Abies grandis*) — Larvae consume needles and buds, weakening trees. - **Eaten by:** [Black-capped Chickadee](https://www.snappit.app/explore/black-capped-chickadee) (*Parus atricapillus*) — Birds prey on the larvae and adult moths. - **Parasitizes:** Parasitic Wasp (*Meteorus trachynotus*) — This wasp lays eggs inside the budworm larvae. ## 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. - [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 These moths are not harmful, but it's best to watch them from a distance. ## Frequently Asked Questions ### How to identify Western Spruce Budworm 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 Western Spruce Budworm Moth's wingspan? 20-30 mm ### How big is Western Spruce Budworm Moth? 8-12 mm ### How long does Western Spruce Budworm Moth live? 10-14 days ### What does Western Spruce Budworm Moth eat? Larvae eat tree buds and needles; adult moths do not feed. ### Where is Western Spruce Budworm Moth usually found? Forests ### How does Western Spruce Budworm Moth hunt? Foraging ### How many legs does Western Spruce Budworm Moth have? 6 ## Where to spot - [E.C. Manning Provincial Park](https://www.snappit.app/guides/places/e-c-manning-provincial-park) — British Columbia, CA · State Park - [Nitobe Memorial Garden](https://www.snappit.app/guides/places/nitobe-memorial-garden) — British Columbia, CA · Botanical Garden - [Darke Lake Provincial Park](https://www.snappit.app/guides/places/darke-lake-provincial-park) — British Columbia, CA · State Park [View all places to see Western Spruce Budworm Moth](https://www.snappit.app/guides/where-to-see/western-spruce-budworm-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: [Western Spruce Budworm Moth: Facts & Places to See — Snappit](https://www.snappit.app/explore/western-spruce-budworm-moth)