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Fungal pathogens of Miconia calvescens (Melastomataceae) from Brazil, with reference to classical biological control

     Departamento de Fitopatologia, Universidade Federal de Viçosa, MG 36571-000, Brazil

Eloise Killgore

     Hawaii Department of Agriculture, Division of Plant Industry, Biological Control Section, Honolulu, Hawaii 96814

A survey of fungal pathogens of Miconia calvescens was carried out in Brazil aimed at finding potential classical biocontrol agents for management of this invasive alien weed in Hawaii. Coccodiella miconiae, Glomerella cingulata ( = Colletotrichum gloeosporioides f. sp. miconiae) and the new species Guignardia miconiae and Korunomyces prostratus were found associated with foliar diseases and are described herein. Two previously undescribed spore stages of Coccodiella miconiae also were obtained allowing a complete description of this species. Pseudocercospora tamonae associated with leaf spots of other species of Miconia also was collected and also was proven to be pathogenic to M. calvescens.

Key words: biological control, classical biocontrol, Hawaii, Melastomataceae, Tahiti