From BugwoodWiki

yellowstriped armyworm Photo by Steve L. Brown, University of Georgia, Bugwood.org Taxonomy Kingdom: Animalia Phylum: Arthropoda Class: Hexapoda (including Insecta) Order: Lepidoptera Family: Noctuidae Genus: Spodoptera Species: ornithogalli Scientific Name Spodoptera ornithogalli (Guenee)

Authors: Dr. Phillip Roberts, Dr. Paul Guillebeau, University of Georgia

Contents 1 Description 2 Hosts 3 Damage 4 Life Cycle 5 Control 6 Originally compiled from

Order Lepidoptera: Family Noctuidae

Description

Adult wingspan: 1.24-1.5 inches. Forewings dark with white and brown markings; hind wings white.

Larvae: smooth-skinned, pale gray to jet black with yellowish-orange stripe along each side and two black triangular spots on the top of most segments. Head capsule brown with black markings and a white inverted "V." Terminal instar (6th) up to 1.8 inches

Hosts

Many, including alfalfa, asparagus, bean, beet, cabbage, clover, corn, cotton, cucumber, grape, grass, jimsonweed, morning glory, onion, pea, peach, peanut, sweet potato, tobacco, tomato, turnip, wheat, watermelon, and wild onion.

Damage

Sporadically injures young crop stands by defoliation.

Life Cycle

Overwinter as pupae in soil. Emergence begins in early April and continues into May. Egg masses placed on foliage, trees, or buildings. Eggs hatch in about 6 days and feed for 3 weeks. Sixth instar larvae burrow into soil to pupate. Moths emerge in two weeks. Entire life cycle takes 4-6 weeks. Three to four generations per year.

Control

Seldom require control, but large larvae are difficult to control with pesticides. Early detection is important. Carbamates, organophosphates, pyrethroids, or Bacillus thuringiensis are often recommended for control.

Originally compiled from

• Roberts, P. and P. Guillebeau. Yellowstriped Armyworm. University of Georgia.