---
title: "Evergreen Bagworm Moth"
description: "Thyridopteryx ephemeraeformis — Insectes et araignées. The evergreen bagworm (Thyridopteryx ephemeraeformis), commonly known as bagworm,"
canonical: https://animalchecklist.com/fr/animal/evergreen-bagworm-moth
last_updated: 2026-09-20
---

# Evergreen Bagworm Moth

> Thyridopteryx ephemeraeformis — Insectes et araignées. The evergreen bagworm (Thyridopteryx ephemeraeformis), commonly known as bagworm,
eastern bagworm, common bagworm, common basket worm, or North American bagworm, is a moth that spins its cocoon in its larval life, decorating it with bits of plant material from the trees on which it feeds.

- Scientific name: *Thyridopteryx ephemeraeformis*
- Category: `insects` (Insectes et araignées)
- Habitats: `forest` (Forêt)
- iNaturalist observations: 19107
- Wikidata: [Q5417256](https://www.wikidata.org/wiki/Q5417256)
- iNaturalist taxon: [121594](https://www.inaturalist.org/taxa/121594)

## Names

- en: Evergreen Bagworm Moth
- es: Gusano de canasta

## Countries with the most observations

US (14040), CA (80), MX (43)

## Summary

The evergreen bagworm (Thyridopteryx ephemeraeformis), commonly known as bagworm,
eastern bagworm, common bagworm, common basket worm, or North American bagworm, is a moth that spins its cocoon in its larval life, decorating it with bits of plant material from the trees on which it feeds.
The evergreen bagworm's case grows to over 6 cm, tapered and open on both ends.  Newborn larvae are blackish and turn brown to tan as they grow, mottled with black.  The heads and thorax develop a yellow tint as they grow to a total length of 24 to 32 mm.  Adult males resemble bees, having a 25 mm wingspan with transparent wings…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Evergreen_bagworm

## Photo

![Evergreen Bagworm Moth](https://animalchecklist.com/img/animals/evergreen-bagworm-moth/medium.jpg)

Photo: Irene Sheldon · CC0 · inaturalist — https://www.inaturalist.org/observations/173436024

## Machine access

`GET https://animalchecklist.com/api/v1/animals/evergreen-bagworm-moth?lang=fr` — see [openapi.json](https://animalchecklist.com/openapi.json).