Louisiana Eyed Silkmoth
A rust-brown Gulf marsh moth hides its great hindwing eyespots at rest, while its stinging caterpillar feeds in the cordgrass that defines the species’ narrow world.
Artwork inspired by Sadie Irvine
Louisiana Eyed Silkmoths are coastal-marsh specialists. The adult’s mottled russet forewings conceal bold eyespots on the hindwings, and males carry especially broad featherlike antennae for tracking female pheromones. Adults have reduced mouthparts and do not feed; reproduction runs on energy stored during the caterpillar stage.
Larvae feed chiefly on Smooth Cordgrass and carry branched urticating spines capable of a painful sting. Several broods place adults on the wing from late winter into autumn, especially on warm humid nights. Observe a naturally resting moth or use a permitted short-duration light setup near intact marsh—never pry open wings or touch a caterpillar.
- Resting adult
- Rust-brown forewings conceal large hindwing eyespots
- Adult diet
- None; mouthparts are reduced
- Larval caution
- Branched spines can produce a painful sting
Quick guide
- Confirm the landscape
- Use Gulf salt or brackish marsh with Smooth Cordgrass
- Confirm the moth
- Add forewing pattern, antennae, hidden eyespots, season, and expert review
Recognize the marsh specialist without forcing its eyespot display
- Begin with real marsh habitat
- Look near intact Cameron Parish salt or brackish marsh dominated by Smooth Cordgrass.
- Read the resting adult
- Notice russet mottled forewings held rooflike over the body and, on males, broad feathered antennae.
- Treat caterpillars as no-touch
- Use host plant, body form, and photographs to assess a suspected Automeris larva while keeping skin away from every branched spine.
- Use light sparingly
- Use a permitted low-intensity UV sheet briefly near intact Louisiana marsh, photograph arrivals promptly, and switch it off before moths accumulate or predators gather.
Good to know
Check the mouthpart biology before attempting care: a Louisiana Eyed Silkmoth adult naturally does not feed, and sugar water cannot replace the energy stored during its caterpillar stage.
Notice these
- Rust-brown concealing forewings
- Large hidden hindwing eyespots
- Broad male antennae
- Smooth Cordgrass marsh association