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Field studies on the biology and economic importance of Pachnoda interrupta (Coleoptera: Scarabaeidae) in Mali, west africa

Published online by Cambridge University Press:  10 July 2009

J.P. Grunshaw
J.P. Grunshaw*
Affiliation:
Natural Resources Institute, Chatham Maritime, UK
*
Mr J.P. Grunshaw, Natural Resources Institute, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK.
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Abstract

A description is given of the life history, biology and feeding habits of the cetoniine beetle Pachnoda interrupta (Olivier) (Coleoptera: Scarabaeidae) studied in pearl millet (Pennisetum glaucum) fields in north-west Mali. The third instar larva of this beetle, reared from the progeny of field captured adults, is also described and figured. Yield losses to a range of beetle densities (1–5 and 10 beetles/head) on millet heads have been estimated to range from 9 to 48% in caged trial experiments. The regression equation generated from these data may be used to establish economic injury thresholds and predict losses resulting from varying beetle densities.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 82 , Issue 1 , March 1992 , pp. 19 - 27
Copyright
Copyright © Cambridge University Press 1992

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References

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