ESTABLISHMENT OF ACANTHOSCELIDES QUADRIDENTATUS (SCHAEFFER) AND A. PUNICEUS JOHNSON (COLEOPTERA: BRUCHIDAE) ON MIMOSA PIGRA IN NORTHERN AUSTRALIA

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Abstract

The Mexican seed-feeding bruchids Acanthoscelides quadridentatus (Schaeffer) and A. puniceus Johnson were released at 32 sites, in 6 Mimosa pigra L. infestations in the Northern Territory between 13 April 1983 and 3 December 1985. Both species established but their impact on M. pigra populations has been negligible. Field collections over a 6 year period showed that 0.8% of M. pigra seeds were destroyed by the bruchids, and that 97.8% of bruchids recovered were A. puniceus.

Ancillary