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Pyrausta fumalis (Guenée) is a newly discovered pest of peppermint in Oregon. P. fumalis is univoltine and overwinters in the soil as a diapausing prepupa in a hibernaculum. Pupation occurs in late spring and adults begin emerging in early June and continue through late August. Peak emergence occurs during a 3–4 week period from late June to late July. In the laboratories, eggs are deposited in masses along leaf veins on the upper and lower surfaces of peppermint leaves. Eggs hatch in 9–10 days and larvae feed on the upper surface of the foliage for 4–5 days before dropping to the soil surface to enter rhizomes. Larvae bore into and feed within rhizomes for 70–80 days and cause serious injury during late August and September. Larvae complete development and construct overwintering hibernacula during late September and October.
Document Type: Research Article
Publication date: July 15, 1974
More about this publication?
Annals of the Entomological Society of America is published in January, March, May, July, September, and November. Annals especially invites submission of manuscripts that integrate different areas of insect biology, and address issues that are likely to be of broad relevance to entomologists. Articles also report on basic aspects of the biology of arthropods, divided into categories by subject matter: systematics; ecology and population biology; arthropod biology; arthropods in relation to plant diseases; conservation biology and biodiversity; physiology, biochemistry, and toxicology; morphology, histology, and fine structure; genetics; and behavior.