Scientific paper

A Method for Monitoring Egg Production by the Eucalyptus Borers Phoracantha spp. (Cerambycidae)

Published in: South African Forestry Journal
Volume 157, issue 1, 1991 , pages: 24–26
DOI: 10.1080/00382167.1991.9629095
Author(s): J.J. Cillié,, G.D. Tribe,


This sampling method for monitoring P. semipunctata egg production in the forest involves attaching four strips of shed Eucalyptus bark (each 40 × 80 mm) by means of drawing pins to a freshly felled Eucalyptus log. The highest number of Phoracantha eggs laid in one week under a single bark trap at the Tokai State Forest was 937. Peak egg laying occurred in March when 1712 eggs were collected in a week under a set of four traps. The advantages of this method are that easy counting of the eggs is facilitated by merely lifting the bark strips; that these eggs can be easily transported to the laboratory; and that this method could be used to detect and monitor possible egg parasites of Phoracantha species in Australia.

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