Authors: WILSON, LINDA M.; McCAFFREY, JOSEPH P.

Source: Environmental Entomology, Volume 22, Number 3, June 1993 , pp. 704-708(5)

Publisher: Entomological Society of America

Abstract:

The bionomics of Phrydiuchus tau Warner associated with the rangeland weed Mediterranean sage, Salvia aethiopis L. (Lamiaceae), in Idaho was evaluated. The phenology of P. tau was closely synchronized with that of Mediterranean sage. Adults emerged from pupation in Mayor June and fed on the rapidly growing foliage of the plant rosettes until mid-June. Estivation occurred throughout the summer when plants were dormant, and adults emerged in the autumn to feed and reproduce. Oviposition occurred from November to April with eggs oviposited singly or in groups of two to four externally in the leaf axils, on the petioles, or on the leaf or crown surfaces. Larvae developed through three instars inside the crown or leaf axil. Pupation occurred in earthen cells between May and June. Larvae often completely destroyed the crown and associated meristematic tissues, resulting in the growth of new shoots and prolonging the longevity of the plant. Larvae were found in plants ranging in size from 1.6 to 43.1 mm crown diameter. Up to 35 larvae were recovered from a Single crown. Smaller-crowned plants were attacked less frequently than larger-crowned plants.

Document Type: Research article

Publication date: 1993-06-01

More about this publication?

• Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment and is divided into the following sections: physiological ecology; chemical ecology; population ecology; quantitative ecology; community and ecosystem ecology; biological control­-parasitoids and predators; biological control--microbials; biological control--weeds; behavior; pest management; sampling; plant-insect interactions; molecular ecology and evolution; transgenic plants and insects. In addition to research papers, Environmental Entomology publishes Letters to the Editor, interpretive articles in a Forum section, and Book Reviews.
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