# Early Thorn (*Selenia dentaria*)

The Early Thorn is a special moth that looks like a little piece of bark! It has beautiful, soft wings that help it hide in trees and bushes during the day.

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

![Early Thorn](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Selenia_dentaria01.jpg&width=800)

Photo: Attribution · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Selenia_dentaria01.jpg)

## Appearance

The Early Thorn has jagged, thorn-like wings, usually pale yellow to reddish-brown with a distinct white or dark band across the forewings. This unique wing shape helps it blend seamlessly with dead leaves or twigs, making it hard to spot.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Arthropoda
- **Class:** Insecta
- **Order:** Lepidoptera
- **Family:** Geometridae
- **Genus:** Selenia

## Interesting facts

- Adult Early Thorns don't eat anything at all, they live off energy from their caterpillar days!
- Early Thorns can have two generations in a year, one in spring and another in summer!
- Its jagged wing edges perfectly mimic a broken twig, making it vanish!
- This moth earned its name because it's one of the first moths seen in spring.

## Special abilities

- **Twig Mimic:** Early Thorn has jagged, thorn-shaped wings that help them perfectly camouflage against dead twigs and bark to hide from predators.
- **Seasonal Survivor:** Early Thorn can overwinter as a pupa, protected in its cocoon, allowing them to emerge early in spring.
- **Two-Gen Moth:** Early Thorn can complete its life cycle twice in one year, resulting in two generations of moths in spring and summer.

## Measurements & details

- **Wingspan:** 30-45 mm
- **Size:** 15-20 mm
- **Lifespan:** 7-14 days
- **Leg Count:** 6

## Diet & Feeding

Caterpillars munch on tree leaves, but adult moths do not eat at all!

- **Age differences:** Only caterpillars eat; adults do not feed, relying on energy stored from their larval stage.
- **Primary Foods:** Hawthorn leaves, Birch leaves, Oak leaves, Hazel leaves
- **Foraging Method:** Foraging

## Ecological connections

- **Eaten by:** [Great Tit](https://www.snappit.app/explore/great-tit) (*Parus major*) — Birds prey on both caterpillars and adult moths.
- **Eaten by:** [European Robin](https://www.snappit.app/explore/european-robin) (*Erithacus rubecula*) — Robins are common predators of many insects, including moths.
- **Eats:** Common Hawthorn (*Crataegus monogyna*) — Caterpillars feed on the leaves of this common tree.
- **Eats:** [Silver Birch](https://www.snappit.app/explore/silver-birch) (*Betula pendula*) — Young caterpillars consume the foliage of birch trees.

## 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.
- [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.
- [Spiky/Thorny](https://www.snappit.app/explore/traits/spiky-thorny): Possessing sharp, pointed projections or spines on the body or surface.
- [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

Don't touch moths, as they can be delicate and might fly away quickly.

## Frequently Asked Questions

### How to identify Early Thorn?

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 Early Thorn's wingspan?

30-45 mm

### How big is Early Thorn?

15-20 mm

### How long does Early Thorn live?

7-14 days

### What does Early Thorn eat?

Caterpillars munch on tree leaves, but adult moths do not eat at all!

### Where is Early Thorn usually found?

Forests

### How does Early Thorn hunt?

Foraging

### How many legs does Early Thorn have?

6

## 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: [Early Thorn: Facts & Places to See — Snappit](https://www.snappit.app/explore/early-thorn)
