A new attempt to introduce the lacy-winged seed fly to Australia for biological control of boneseed

  • Published: 4 Nov 2011

  • Author(s): Morley, T.

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Mesoclanis magnipalpis Bezzi (lacy-winged seed fly – LWSF) is a tephritid fly whose larvae live and pupate in the flowers and developing fruit of the southern African shrub Chrysanthemoides monilifera (L.) T.Norl. (2, 4) and is approved in Australia as a biological control agent for this species. C. monilifera comprises six subspecies (5) of which subsp. monilifera (L.) T.Norl. (boneseed) is a serious weed in Australia and subsp. pisifera (L.) T.Norl. is restricted to South Africa. The LWSF utilises both subspecies as hosts. The flowering/fruiting season of C. m. subsp. pisifera extends from late autumn through to late winter while that of boneseed extends from late winter through to early summer.