AN UPDATE ON FOREST INVASIVE SPECIES IN MALAWI

Cinara cupressivora (cypress aphids)

• Under biological control by Pauesia juniperorum (Pj) in many but not in all

trees/sites.

• Current studies: determine effectiveness of Pj in various sites.

• “Resurgence??” on Mulanje Mt.

• Natural resistance and interaction with Pj – (AFORNET)

Pineus boerneri (Pine woolly aphid)

. Sporadic occurrences in all pine forests, rare tree mortality

. Presumed under biological control

Rubus ellipticus

•A menace in all forest plantations

•Attempted physical control on Mulanje

•In all pine plantations

•No monitoring

•No tree mortality observed

Cinara pinivora

Eucalyptus tereticornis

Eucalyptus terreticornis and Pinus patula

Attempted physical control on Mulanje and Zomba

Heteropsylla cubana (Leucaena psyllid)

Flame Tree Pest

General Constraints

Monitoring

•Facilities•Identification•trained staff•Monitoring techniques