Dark sword-grass
Dark sword-grass

Dark sword-grass
P6
  • Description
  • More
The Dark Sword-Grass moth is a fascinating species with a complex lifecycle and ecological importance. Its role as both a pollinator and a prey species highlights its value within various ecosystems. Understanding its habits and impacts helps in managing its presence, especially in agricultural contexts, and underscores the need for continued ecological research and conservation efforts.

Dark Sword-grass Agrotis ipsilon (Hufnagel, 1766)

Immigrant

Similar species: Pearly Underwing Peridroma saucia lacks the black streak through the kidney mark and the males do not have feathered antennae.

Forewing: 15 to 25mm

Habitats: Most habitats; woodland, parkland, moorland, heathland, marshes, arable land, coastal downland, sand-dunes and gardens.

Habits: The moth visits flowers and is attracted to sugar and light.

Foodplant: The larva feeds near the ground on low growing herbaceous plants and crops, such as Curled Dock, Wintercress, Fat-hen, Smooth Meadow-grass. In captivity it will accept Dandelion and plantains.

The Dark Sword-Grass (Agrotis ipsilon) is a notable moth species within the family Noctuidae, recognized for its distinctive appearance and ecological significance. Commonly referred to as the "Dark Sword-Grass Moth," this species is found across a wide geographical range and plays an essential role in various ecosystems.

Identification and Appearance

The Dark Sword-Grass moth is characterized by its dark, nearly black forewings with subtle grayish-brown markings. The hindwings are lighter, often a pale brown or gray. The forewings feature a distinctive sword-like pattern, which gives the moth its common name. Adults typically have a wingspan ranging from 32 to 45 millimeters. Their nocturnal behavior and cryptic coloration help them evade predators and blend into their surroundings during the day.

Lifecycle and Behavior

The lifecycle of the Dark Sword-Grass moth includes four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. Females lay their eggs on a variety of host plants, which the larvae (caterpillars) feed on once hatched. The caterpillars are known to be voracious feeders and can sometimes become pests in agricultural settings. After a period of feeding and growth, the larvae pupate in the soil, emerging as adult moths ready to continue the cycle.