Cypress Gray

iridopsis pergracilis

The Cypress Gray (Iridopsis pergracilis) is a fascinating geometrid moth native to the wetlands and swamp forests of the southeastern United States. Closely tied to its namesake host plants, the bald cypress and pond cypress, this moth is a master of disguise. As caterpillars, they resemble small twigs, looping elegantly along cypress needles. As adults, they transform into cryptic beauties that blend seamlessly into the bark of swamp trees. They play a vital role in their native ecosystems, serving as an important food source for nesting birds and insectivorous reptiles while participating in natural forest dynamics.

Habitat: Found in cypress swamps, wet woodlands, and riparian zones throughout the southeastern United States.

Appearance

Adult Cypress Grays feature a wingspan of 2.5 to 3.8 cm, with a highly cryptic wing pattern composed of mottled grays, whites, and dark brown lines. The forewings and hindwings have wavy postmedial and antemedial lines that perfectly mimic the texture, lichens, and cracks of cypress bark. When at rest, they spread their wings flat against a surface to obscure their silhouette. The caterpillars are typical inchworms—slender, brownish-green, and resembling the twigs and leaf stalks of their host trees.

KingdomAnimaliaPhylumArthropodaClassInsectaOrderLepidopteraFamilyGeometridaeGenusIridopsis

Cypress Gray

Interesting facts

Like other geometrid moths, the caterpillars of the Cypress Gray are 'inchworms', moving with a looping gait because they lack mid-abdominal prolegs.

Severe local outbreaks of Cypress Gray caterpillars can occasionally defoliate large stands of pond cypress in Florida, though the trees typically flush new leaves and recover.

Their flight season is continuous in the warmest parts of Florida, with multiple overlapping generations emerging throughout the year.

Special abilities

Adults possess intricate wing patterns that mimic lichen and bark, allowing them to disappear entirely from predators when resting flat against tree trunks.

The larvae (caterpillars) can hold their bodies rigid at an angle from branches, perfectly imitating cypress twigs to avoid detection by birds.

The moth presses its wings incredibly flat against the bark surface to prevent casting a shadow, which would otherwise give away its location.

Measurements & details

Length: 1+ cm
Wingspan: 2+ cm
Weight: 0+ kg
Lifespan: 0+ years
Top Speed: 15 km/h
Clutch Size: 50+
Incubation: 5+ days

Diet & Feeding

Larvae feed exclusively on the foliage of cypress trees, while adults primarily sip flower nectar or do not feed extensively during their short adult lifespan.

Age differences: Larvae are strictly defoliators feeding on cypress needles, whereas adults feed exclusively on liquid nectar if they feed at all.

Primary Foods

Bald Cypress needles
Pond Cypress needles
Flower nectar

Foraging Method

Grazing

Ecological connections

host plant

Bald Cypress

Taxodium distichum

Provides critical larval food source and host tree support.

eaten by

Carolina Anole

Anolis carolinensis

Preys on the adult moths and caterpillars found on tree trunks.

eaten by

Carolina Chickadee

Poecile carolinensis

Forages in swamp canopies and gleans caterpillars from foliage.

Traits

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Also known as

No aliases listed yet.

Collections

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Cypress Gray?

The easiest way to identify Cypress Gray is to use the Snappit nature identifier app.

How long is Cypress Gray?

1+ cm

What is Cypress Gray's wingspan?

2+ cm

How much does Cypress Gray weigh?

0+ kg

How long does Cypress Gray live?

0+ years

How fast can Cypress Gray move?

15 km/h

What does Cypress Gray eat?

Larvae feed exclusively on the foliage of cypress trees, while adults primarily sip flower nectar or do not feed extensively during their short adult lifespan.

Where is Cypress Gray usually found?

Found in cypress swamps, wet woodlands, and riparian zones throughout the southeastern United States.