Large Yellow Underwing (or related dart moth)
Scientific Name: Noctua pronuba
Category: insect
Brief Description
A medium-sized moth resting on a woven surface, characterized by brownish forewings with distinct markings and a small reddish or orange-brown thorax collar.
Characteristics
Forewings vary from pale brown to dark brown, often featuring small pale spots or kidney-shaped stigmata with white outlines. The hindwings, hidden at rest, are typically bright yellow with a black subterminal band. The thorax often shows a distinct contrasting reddish-brown or orange patch.
Habitat
Found in a wide range of habitats including gardens, woodlands, agricultural fields, and open grasslands.
When to Find It
Adults are typically active from June to October and are heavily attracted to artificial lights at night.
Conservation Status
Common and widespread
Ecological Role
Adult moths serve as important pollinators and act as a vital food source for bats, birds, and other insectivorous wildlife. Caterpillars feed on various grasses and herbaceous plants.
Easily Confused With
Other noctuid moths such as the Lesser Yellow Underwing (Noctua comes) or Broad-bordered Yellow Underwing (Noctua fimbriata), distinguished by wing markings and hindwing coloration.
Observation Tips
Look near outdoor lights at night or check vegetation and garden furniture during daylight hours when they are resting.
Interesting Facts
When disturbed, these moths will suddenly flash their bright yellow hindwings to startle predators before dropping into the vegetation to hide.