Cucullia intermedia

Speyer, 1870

Intermediate Hooded Owlet, Dusky Hooded Owlet, Intermediate Cucullia, Goldenrod Cutworm

Cucullia intermedia is a noctuid distributed across southern Canada and the northern United States, with western extending to California and eastern populations reaching Pennsylvania. The exhibits two annually, with active from May through October. Larvae feed on leaves of trees and shrubs including birch, poplar, and willow, as well as flowers of Asteraceae such as Lactuca species.

Cucullia intermedia by (c) Handfield L, Handfield D, some rights reserved (CC BY). Used under a CC-BY license.

Cucullia intermedia 01 by CBG Photography Group, Centre for Biodiversity Genomics. Used under a CC0 license.

Image from page 357 of "Annual report of the Fruit Growers' Association of Ontario, 1898" (1899) (14779628321) by Internet Archive Book Images. Used under a CC0 license.

Pronunciation

How to pronounce Cucullia intermedia: /kuˈkʊl.li.a ˌɪn.tərˈmiː.di.a/

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

Identification

Distinguished from similar Cucullia by combination of geographic range, wing pattern, and . Forewings relatively plain compared to some , lacking strong contrasting markings. Two- with extended period (May–October) differs from some northern Cucullia with single generation. Genitalia examination may be required for definitive separation from closely related species.

Images

Appearance

Wingspan 45–50 mm. : forewings narrow, gradually tapering; coloration dull reddish-brown to grayish-brown with variable patterning. Hindwings pale, unmarked. Body slender with characteristic 'hooded' profile typical of Cucullia, with tufted giving raised appearance. Larvae: , smooth-bodied, coloration variable but generally cryptic.

Habitat

Found in diverse including deciduous woodlands, forest edges, riparian corridors, and open areas with plants. Occurs from low elevations to montane zones in the Rocky Mountains, reaching the White Mountains of Arizona.

Distribution

Transcontinental across southern Canada (Alberta, Saskatchewan, Manitoba, Quebec, Vermont) and northern United States. Western range extends to California; eastern range reaches Pennsylvania. Rocky Mountain occur south to east-central Arizona, with common occurrence in Utah, Colorado, and northeastern Nevada.

Seasonality

on wing from May to October. Two per year throughout range; varies with latitude and elevation.

Diet

Larvae feed on leaves of birch (Betula), poplar (Populus), willow (Salix), and other trees and shrubs. Also consumes flowers of Lactuca and other Asteraceae .

Host Associations

Betula - larval food plantleaves
Populus - larval food plantleaves
Salix - larval food plantleaves
Lactuca - larval food plantflowers

Life Cycle

Two annually. Overwinters as pupa or larva (specific stage not confirmed in sources). stage duration not documented. Larval development occurs through spring and summer with two distinct cohorts. in soil or leaf litter.

Behavior

, attracted to light. Larvae are cutworms, feeding primarily at night, hiding in soil or debris during day. No migratory documented.

Ecological Role

Larval herbivore on woody plants and forbs; contributes to nutrient cycling through foliar consumption. Serves as prey for and . No specialized ecological interactions documented.

Human Relevance

Occasional minor pest on ornamental trees and shrubs. 'Goldenrod ' reflects larval feeding on goldenrod flowers, though economic impact minimal. Subject of citizen science documentation through platforms such as iNaturalist and BugGuide.

Similar Taxa

Cucullia asteroidesSimilar size and general appearance; distinguished by forewing pattern and more northern distribution with single
Cucullia convexipennisOverlaps in eastern range; differs in forewing maculation and larval preferences

More Details

Taxonomic History

First described by Adolph Speyer in 1870. Placed in Cucullia, characterized by hooded thoracic appearance.

Nomenclature

Multiple reflect different aspects: 'Hooded Owlet' refers to thoracic tufts; 'Goldenrod ' refers to larval feeding on Asteraceae; 'Intermediate' refers to specific epithet and possibly intermediate characteristics between related .