Catocala palaeogama

Guenée, 1852

Oldwife Underwing, Old Wife Underwing

palaeogama is a North American in the Erebidae, first described by Guenée in 1852. The exhibits the characteristic underwing : cryptic forewings that conceal brightly patterned hindwings when at rest. are active from June through October with one per year. The larval stage feeds exclusively on hardwood trees in the walnut and hickory family (Juglandaceae), as well as chestnut, apple, and related species. The species ranges across eastern and central North America from Ontario to South Carolina and west to Arkansas and Oklahoma.

Catocala palaeogama by (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block. Used under a CC-BY license.

Catocala palaeogama 02 by Dumi. Used under a CC BY-SA 4.0 license.

Catocala palaeogama 01 by Dumi. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Catocala palaeogama: /kəˈtɒkələ pæliːəˈɡeɪmə/

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Identification

The Oldwife Underwing can be distinguished from similar by the specific pattern of its hindwing bands and the details of forewing markings. Some authors consider C. palaeogama synonymous with C. neogama, indicating close morphological similarity between these . Accurate identification often requires examination of genitalic characters or comparison with reference specimens. The species is larger than many microlepidoptera but comparable in size to other . The combination of geographic range, plant association with Juglandaceae, and period (June–October) aids in field identification.

Images

Appearance

have a wingspan of 60–70 mm. The forewings are gray-brown with intricate dark patterning, providing bark-like camouflage when the is at rest with folded roof-like over the body. The hindwings, concealed at rest, display bold coloration typical of —bands of orange, red, black, and white that are flashed suddenly when the moth is disturbed. The specific pattern elements of the hindwings distinguish it from .

Habitat

Deciduous forest and woodland containing trees, particularly areas with hickory, walnut, and chestnut. The occupies mature hardwood forests and mixed woodlands where larval food plants are abundant.

Distribution

Eastern and central North America: Ontario and Quebec (rare), Maine, New Jersey, Tennessee, South Carolina, west to Arkansas and Oklahoma, north through Iowa, Indiana, Illinois, and Michigan.

Seasonality

are on from June to October depending on location. One per year is probable.

Diet

feed on Carya alba, C. glabra, C. illinoinensis, C. laciniosa, C. ovalis, C. ovata (hickories), Castanea dentata (American chestnut), Juglans nigra (black walnut), and Malus pumila (apple). feeding habits are not documented in available sources.

Host Associations

Carya alba - larval food plant
Carya glabra - larval food plant
Carya illinoinensis - larval food plant
Carya laciniosa - larval food plant
Carya ovalis - larval food plant
Carya ovata - larval food plant
Castanea dentata - larval food plant
Juglans nigra - larval food plant
Malus pumila - larval food plant

Life Cycle

One per year is probable. emerge June through October. Larval stage feeds on tree foliage. presumably occurs in soil or leaf litter, though specific details of pupal stage are not documented in available sources.

Behavior

are and attracted to light, though typically remain on the periphery of light stations rather than landing directly on sheets. When disturbed, adults flash their brightly colored hindwings as a startle defense against , then rapidly to a new perch where they resume cryptic posture with hindwings concealed.

Ecological Role

function as folivores on hardwood trees, contributing to in forest . may serve as for including bats and birds. The is part of the diverse that contributes to overall biodiversity in eastern North American forests.

Human Relevance

The is of interest to lepidopterists and citizen scientists participating in observation events such as National Moth Week. Its feed on commercially important nut trees (pecan, hickory, walnut) and apple, though it is not documented as a significant agricultural pest. Taxonomic uncertainty regarding its relationship to C. neogama affects conservation and inventory efforts.

Similar Taxa

Catocala neogamaSome authors consider C. palaeogama synonymous with C. neogama, indicating extremely close morphological similarity requiring detailed examination to distinguish.

More Details

Taxonomic Status

The relationship between palaeogama and C. neogama remains unresolved, with some authorities treating them as distinct and others as synonyms. This uncertainty complicates distribution mapping and conservation assessment.

Conservation Status

Considered rare in Ontario and Quebec at the northern extent of its range. trends are poorly documented across most of its distribution.