LepidopteraMegalopygidae – Flannel Moths

Trosia obsolescens - Hodges#4640

Trosia obsolescens

This record describes Trosia obsolescens (species). Recorded family: Megalopygidae. Recorded order: Lepidoptera.

Identification and Appearance

Trosia obsolescens - Hodges#4640 - Trosia obsolescens
Contributed by Maury J. Heiman; Additional contributions by cotinis
FeatureDescription
ForewingForewing has a row of black dots across the median area.
HindwingHindwing is salmon orange.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera (Butterflies and Moths)
Superfamily
Zygaenoidea
Family
Megalopygidae (Flannel Moths)
Genus
Trosia

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

Southern Arizona, Mexico and Central America. Moth Photographers Group - large map with some distribution data.

Seasonal Activity

Adults fly July and August. ,

Diet and Behavior

Diet: Larval hosts include: Quercus oblongifolia Torr. (Mexican blue oak) Quercus emoryi Torr. (Emory oak)

About Butterflies and Moths: the wider group

Order-level background for Lepidoptera, the group containing Trosia obsolescens. Species-specific details appear above.

Group overview

Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.

Ecological role of the group

Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.

Economic and practical significance of the group

Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.

Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.

Explore Lepidoptera families and species →

Photos of Trosia obsolescens - Hodges#4640 (5)

Trosia obsolescens - Hodges#4640 - photo 1
Contributed by Maury J. Heiman; Additional contributions by cotinis
Trosia obsolescens - Hodges#4640 - photo 2
Contributed by Maury J. Heiman; Additional contributions by cotinis
Trosia obsolescens - Hodges#4640 - photo 3
Contributed by Maury J. Heiman; Additional contributions by cotinis
Trosia obsolescens - Hodges#4640 - photo 4
Contributed by Maury J. Heiman; Additional contributions by cotinis
Trosia obsolescens - Hodges#4640 - photo 5
Contributed by Maury J. Heiman; Additional contributions by cotinis

Photo credits: Contributed by Maury J. Heiman; Additional contributions by cotinis

Frequently Asked Questions About Trosia obsolescens - Hodges#4640

What is Trosia obsolescens - Hodges#4640?

Trosia obsolescens - Hodges#4640 (Trosia obsolescens) is a species in the family Megalopygidae, within the order Lepidoptera.

How big is Trosia obsolescens - Hodges#4640?

Forewing length 12-18 mm.

How do you identify Trosia obsolescens - Hodges#4640?
FeatureDescription
ForewingForewing has a row of black dots across the median area.
HindwingHindwing is salmon orange.
Where is Trosia obsolescens - Hodges#4640 found?

Range: Southern Arizona, Mexico and Central America. Moth Photographers Group - large map with some distribution data.

What does Trosia obsolescens - Hodges#4640 eat?

The diet of the Trosia obsolescens - Hodges#4640 includes Larval hosts include: Quercus oblongifolia Torr. (Mexican blue oak) Quercus emoryi Torr. (Emory oak).

When is Trosia obsolescens - Hodges#4640 active?

Trosia obsolescens - Hodges#4640: seasonal activity - Adults fly July and August. ,.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Maury J. Heiman; Additional contributions by cotinis. Contributors retain copyright over their individual contributions.