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Download yellow striped armyworm1/31/2024 ![]() The egg mass is covered with scales from the moth's body. ![]() Greenish at first, eggs gradually become pale pink to brown before hatching. Each egg is tiny and has microscopic ribs. Females lay up to 3,000 eggs with as many as 500 eggs in one mass. The hind wings are pale with a narrow dark line near the margin. Yellowstriped armyworm moths have dark forewings mottled with white and brown markings. The reddish-brown pupa is about 5/ 8 inch long, cylindrical, and slightly pointed at the rear. The sixth stage may be as long as 1¾ inches. It is smooth, pale gray to jet black with a yellowish-orange stripe along each side and a pair of black, triangular spots on top of most segments. The yellowstriped armyworm, Spodoptera ornithogalli, is a general feeder on herbaceous plants. 12: 2285-2292.Description and Biology Skip to Description and Biology Can alien plants support generalist insect herbivores Biological Invasions. With few exceptions, all four generalists either quickly starved or grew at an unsustainably low rate on alien foliage. Actias luna larvae from a single population were similarly reared on a representative of each of the 25 native plant genera recorded as hosts for this species to compare the diet breadth of a local population with that listed over the entire geographic range of the species. Yellow-striped armyworm ( Spodoptera ornithogalli), luna moth ( Actias luna), bagworm ( Thyridopteryx ephemeraeformis) and white-marked tussock moth ( Orgyia leucostigma) were reared from egg to 5th instar on excised foliage in the laboratory to determine the degree to which highly polyphagous lepidopteran herbivores are physiologically capable of surviving and developing on the suite of alien plants naturalized in the mid-Atlantic. Simple rearing experiments were conducted to address two questions relevant to understanding how generalist lepidopteran herbivores interact with alien plants.
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