# Ribbed Pine Borer (*Rhagium inquisitor*)

The Ribbed Pine Borer is a little beetle that loves to munch on wood! It has a special ribbed body that helps it blend in with tree bark, making it hard to spot.

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

![Ribbed Pine Borer](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Rhagium-inquisitor-04-fws.jpg&width=800)

Photo: Francisco Welter-Schultes, CC0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Rhagium-inquisitor-04-fws.jpg)

## Appearance

The Ribbed Pine Borer is a medium-sized beetle with a flattened, elongated body, typically greyish-brown to black. Its most distinctive feature is the heavily ridged or "ribbed" wing covers (elytra). It also has long, segmented antennae that can be longer than its body.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Coleoptera
- **Family:** Cerambycidae
- **Genus:** Rhagium

## Interesting facts

- Adult Ribbed Pine Borers only live a few weeks, just long enough to find a mate!
- Its tough shell helps protect it from hungry birds and other forest creatures.
- Sometimes, adult beetles are found under bark, resting quietly through the winter!
- This beetle's larvae can spend years munching tunnels deep inside dead tree trunks!

## Special abilities

- **Wood-Tunneling Grinders:** Ribbed Pine Borer larvae can chew through tough wood because of their strong mandibles that helps them create tunnels for growth.
- **Camouflage Stripes:** Ribbed Pine Borer adults have ribbed wing covers and muted colors that helps them blend perfectly with tree bark to hide.
- **Sensing Antennae:** Ribbed Pine Borers have very long antennae that helps them detect suitable host trees or find mates in the forest.

## Measurements & details

- **Wingspan:** 20-44 mm
- **Size:** 10-22 mm
- **Lifespan:** 730-1460 days
- **Leg Count:** 6

## Diet & Feeding

Young Ribbed Pine Borers eat dead wood, while adults sometimes sip nectar.

- **Age differences:** Larvae bore into and consume wood; adults may feed on pollen/nectar or not at all.
- **Primary Foods:** Pine Wood, Spruce Wood, Fir Wood, Conifer Bark
- **Foraging Method:** Foraging

## Ecological connections

- **Depends on:** [Scots Pine](https://www.snappit.app/explore/scots-pine) (*Pinus sylvestris*) — Larvae feed on the dead wood of this tree.
- **Depends on:** [Norway Spruce](https://www.snappit.app/explore/norway-spruce) (*Picea abies*) — Its larvae develop inside dead spruce trees.
- **Eaten by:** [Great Spotted Woodpecker](https://www.snappit.app/explore/great-spotted-woodpecker) (*Dendrocopos major*) — Woodpeckers often extract larvae from wood.

## Traits

- [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.
- [Decomposer](https://www.snappit.app/explore/traits/decomposer): Describes organisms that break down dead organic material, recycling nutrients back into the ecosystem.
- [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.
- [Miniature](https://www.snappit.app/explore/traits/miniature): Pertaining to species that are significantly smaller than typical or average for their kind.
- [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

It's safe to observe this beetle, but don't touch it as it may be hiding from predators.

## Frequently Asked Questions

### How to identify Ribbed Pine Borer?

Look for hard wing covers meeting in a line down the back, then compare the antennae, body shape, legs and markings. Metallic colors shift a lot with lighting. Beetle Identifier: upload a photo and compare the visible details.

### What is Ribbed Pine Borer's wingspan?

20-44 mm

### How big is Ribbed Pine Borer?

10-22 mm

### How long does Ribbed Pine Borer live?

730-1460 days

### What does Ribbed Pine Borer eat?

Young Ribbed Pine Borers eat dead wood, while adults sometimes sip nectar.

### Where is Ribbed Pine Borer usually found?

Forests

### How does Ribbed Pine Borer hunt?

Foraging

### How many legs does Ribbed Pine Borer have?

6

## Where to spot

- [Cypress Provincial Park](https://www.snappit.app/guides/places/cypress-provincial-park) — British Columbia, CA · State Park

## 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: [Ribbed Pine Borer: Facts & Places to See — Snappit](https://www.snappit.app/explore/ribbed-pine-borer)
