Agrotis malefida

Guenée, 1852

Rascal Dart, Palesided Cutworm

Agrotis malefida, commonly known as the rascal dart or palesided , is a distributed across the southern United States and throughout the Neotropics from Mexico to Argentina and Chile. The species exhibits notable seasonal variation in , appearing in late January in northern portions of its range while flying year-round in southern regions. are significant agricultural pests, feeding on a broad range of broad-leaved herbaceous plants and causing damage to major including corn, cotton, and various vegetables.

Agrotis malefida CSU ENT1106237 by CSU, Department of Bioagricultural Sciences and Pest Management. Used under a CC0 license.

CATALOGUE-BM-LXVIII by Sir GEORGE F. HAMPSON, Bart.. Used under a Public domain license.

Agrotis malefida ASUHIC0115007 by Arizona State University Hasbrouck Insect Collection. Used under a CC0 license.

Pronunciation

How to pronounce Agrotis malefida: /əˈɡroʊtɪs mæˈlɛfɪdə/

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

Identification

The specific measurements and the 'palesided ' suggest pale markings may be present, though no detailed diagnostic features distinguishing it from are documented in available sources.

Images

Appearance

have a wingspan of 40–50 mm (1.6–2.0 in), with measuring 18–23 mm (0.71–0.91 in).

Habitat

Found in diverse environments across its broad geographic range, from temperate regions in the southern United States to tropical and subtropical zones throughout the Neotropics. Specific microhabitat preferences for or are not documented.

Distribution

to North America and the Neotropics. In the United States, occurs from North Carolina and Kentucky south to Florida, west to Arizona, and north to southern Kansas. Also present throughout the Neotropics from Mexico to Argentina and Chile, including the Falkland Islands.

Seasonality

emerge in late January in the northern part of the range. In southern regions, adults throughout the year with no distinct seasonal peak.

Diet

are feeding on broad-leaved herbaceous plants. Documented include Brassica oleracea (cabbage), Trifolium (clover), Fabaceae (legumes), Allium (onion/garlic), Pisum sativum (pea), Capsicum (pepper), Solanum tuberosum (potato), Nicotiana (), Solanum lycopersicum (tomato), and various weeds. Considered a pest on Zea mays (corn) and Gossypium (cotton).

Host Associations

Brassica oleracea - larval
Trifolium - larval
Fabaceae - larval
Allium - larval
Pisum sativum - larval
Capsicum - larval
Solanum tuberosum - larval
Nicotiana - larval
Solanum lycopersicum - larval
Zea mays - larval , major pest
Gossypium - larval , major pest

Life Cycle

with , larval, pupal, and stages. Eggs are laid in soil or on stems and leaves. hatch in 2–14 days and are typical —plump, grayish to brownish, curling into a C-shape when disturbed. Fully grown larvae reach 1–2 inches in length. occurs in soil. Some individuals overwinter as , others as adults, but most overwinter as small larvae in soil or grass clumps. Larvae feed underground during daytime and emerge to feed at night.

Behavior

exhibit classic : surface feeding that severs stems at, slightly below, or slightly above the soil surface. Larvae remain hidden in soil during daylight hours. are nocturnal fliers.

Ecological Role

function as primary consumers of . As a across a broad geographic range, the likely serves as for various vertebrate and , though specific predator relationships are not documented.

Human Relevance

Significant agricultural pest. damage multiple economically important including corn, cotton, cabbage, tomato, potato, pepper, pea, and . Management relies on cultural practices (weed control, seedbed preparation, tillage) and , with timing optimized for late afternoon when larvae are near the soil surface. Insecticidal and ground applications are used, with banded applications at planting for subterranean larvae.

Similar Taxa

Agrotis ipsilon (Black Cutworm)Similar and pest status; distinguished by specific patterns and geographic distribution patterns
Agrotis orthogonia (Pale Western Cutworm)Subterranean feeding habit and similar larval form; differs in preference for loose, sandy, dry soils and more western distribution
Euxoa spp.Shared and agricultural pest status; separation requires examination of or detailed pattern analysis

More Details

Taxonomic stability

The has maintained stable since original description by Guenée in 1852, with no documented synonymy or subspecific .

Collection records

Over 2,000 observation records documented on iNaturalist, indicating the is relatively well-observed and photographed by naturalists within its range.