Species Details

Catocala junctura

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameJoined Underwing SeasonalityAdults fly in Alberta in late August and early September. IdentificationOne of the largest (7.2- 8.5 cm wingspan) Alberta underwing moths. The forewings are a smooth evenly powdered blue-grey, with few markings. The doubled reniform spot and the lower end of the postmedian band where it crosses the fold are the most prominent markings. The hindwings are salmon or orange-pink as in parta and luciana, not red-orange as in unijuga and meskei or bright pink as in hermia and concumbens. The hindwing black median band is narrow and turns in sharply at the lower end, and in some specimens may have a small separate spot at the lower end as does C. meskei. The fringe is white and the antennae are simple, and both sexes are essentially alike.

Scientific Name Catocala junctura Common Name Joined Underwing Habitat In Alberta, riparian cottonwood-willow groves in the valleys of the arid southern grasslands region. Seasonality Adults fly in Alberta in late August and early September. Identification
One of the largest (7.2- 8.5 cm wingspan) Alberta underwing moths. The forewings are a smooth evenly powdered blue-grey, with few markings. The doubled reniform spot and the lower end of the postmedian band where it…
One of the largest (7.2- 8.5 cm wingspan) Alberta underwing moths. The forewings are a smooth evenly powdered blue-grey, with few markings. The doubled reniform spot and the lower end of the postmedian band where it crosses the fold are the most prominent markings. The hindwings are salmon or orange-pink as in parta and luciana, not red-orange as in unijuga and meskei or bright pink as in hermia and concumbens. The hindwing black median band is narrow and turns in sharply at the lower end, and in some specimens may have a small separate spot at the lower end as does C. meskei. The fringe is white and the antennae are simple, and both sexes are essentially alike.
Life History
The adults are one of the latest Alberta underwings to appear. They are nocturnal and come to light, but like other underwings are best caught using sugar baits. The eggs overwinter, and the larvae are solitary…
The adults are one of the latest Alberta underwings to appear. They are nocturnal and come to light, but like other underwings are best caught using sugar baits. The eggs overwinter, and the larvae are solitary defoliators. There is a single brood each year.
Conservation At the northern edge of its range. No serious concern. Diet Info No Alberta data. Elsewhere reported to use willow (Salix). Range
New York and Pennsylvania west to southeastern British Columbia, Montana, Colorado and Arizona, north to extreme southern Alberta and Saskatchewan. In Alberta it has been taken in the Milk River and Oldman River…
New York and Pennsylvania west to southeastern British Columbia, Montana, Colorado and Arizona, north to extreme southern Alberta and Saskatchewan. In Alberta it has been taken in the Milk River and Oldman River valleys, north to Taber.

Citation

Page Citation for Catocala junctura

Page Citation

"Catocala junctura, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-806. Accessed 16 Oct. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Noctuidae Subfamily Catocalinae Genus Catocala Species Catocala junctura
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum