German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Environmental Programmes

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Preliminary results of a root feeding flea beetle

Netshiluvhi M. and Madire L.G - Agricultural Research Council - Plant Protection Research Institute

The introduced ornamental plant, yellow bells is one of South Africa’s worst invasive weeds. It has been the target of biological control for the past decade.

Several natural enemies have been imported and screened in quarantine, only three have been found suitable for release.

A rust fung,i Prospodium transformans, was released in 2010 but did not establish; a leaf-feeding lady beetle (Mada polluta) was released in 2013 and the initial establishment is confirmed and the third biological control agent, a leaf mining fly (Pseudonapomyza sp.) is still awaiting approval by authorities.

A root-feeding flea beetle (Heikertingerelle sp) a potential biological control agent of yellow bells was brought into quarantine in South Africa for further screening from Mexico. It is believed that if this candidate agent is found suitable for release, it will extent more pressure on the target plant as it will be targeting a different niche and complement to other two leaf feeders.

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