Catocala unijuga

Walker, 1858

once-married underwing, once-married underwing moth

unijuga is a large in the Erebidae, first described by Francis Walker in 1858. are characterized by cryptic that conceal brightly patterned , a trait shared across the Catocala. The is distributed across northern and western North America, with feeding on poplars and willows. Adults from July to September in a single .

Catocala unijuga by (c) Hawks DC, some rights reserved (CC BY). Used under a CC-BY license.Catocala unijuga by no rights reserved, uploaded by Nancy Mullin. Used under a CC0 license.Catocala unijuga 27954917 by Ian Manning. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Catocala unijuga: //ˌkætoʊˈkeɪlə ˌjuːnɪˈdʒuːɡə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from other by specific pattern elements and coloration; precise identification requires reference to diagnostic markings on the forewing and the color pattern of the exposed hindwing. The species name "unijuga" (Latin: "once-married" or "single-yoked") may refer to a specific marking. Separation from similar species such as Catocala concumbens or C. ilia requires careful examination of patterns and, in some cases, genitalic dissection.

Images

Appearance

Wingspan 68–82 mm. gray- with cryptic patterning that blends with tree bark. display bold patterning typical of , with distinct coloration visible when are spread at rest or in . simple, not strongly feathered. Body , typical of large -like .

Habitat

Associated with riparian and woodland where larval plants occur. Found in mixed forests, aspen groves, and areas with poplar and willow stands. In western portions of range, occurs in montane and submontane zones including dry mixed conifer forest with oaks.

Distribution

North America: Newfoundland west to south-central British Columbia, south to Kentucky and Missouri in the east, and to Colorado and Utah in the west. Present in Canadian provinces including Alberta, Manitoba, and Saskatchewan.

Seasonality

active July to September. Single per year (), with timing varying by location and elevation.

Diet

feed on Populus tremuloides (quaking aspen), Populus nigra (black poplar), and Salix (willows). feeding habits not documented in sources.

Life Cycle

with , , , and stages. Single ; larvae feed on foliage, presumably occurs in soil or leaf litter. Specific details of pupal stage and stage not documented in sources.

Behavior

are and attracted to light, though in the typically remain on the periphery of light stations or may be flushed from nearby vegetation rather than landing directly on light sheets. When disturbed, adults flash brightly colored as a startle defense before taking .

Ecological Role

Larval stage functions as a folivore on poplar and willow , contributing to in riparian and forest . serve as for including bats and birds; are prey for and .

Human Relevance

Subject of interest to and citizen scientists; are sought after by enthusiasts for their striking patterns. Featured in National Moth Week events and other citizen science documentation efforts. No documented economic importance as pest or .

Similar Taxa

  • Catocala concumbensSimilar size and general appearance; distinguished by differences in pattern and coloration
  • Catocala iliaOverlaps in range and ; requires examination of specific markings for separation
  • Other Catocala species members share cryptic and colorful ; precise identification relies on pattern details and often requires genitalic examination

Tags

Sources and further reading