Shot Hole Borer Reporting Tool

This page is for residents to report sightings of Polyphagous Shot Hole Borer (PSHB) or Fusarium damage to trees in the City of Cape Town

Report sightings of PSHB or Fusarium Dieback

The Polyphagous Shot Hole Borer (PSHB) is a tiny invasive black beetle from Asia that is smaller than a sesame seed (2mm).

1. What does this beetle do?

The PSHB beetle (Euwallacea fornicatus) creates tunnels, or galleries, in the trunks and branches of host trees and lays their eggs inside.

3. What can you see on tree trunks?

Round 1mm wide entry-holes to beetle tunnels. Look for dark, wet staining; thick gumming; streaks of white powder or fine sawdust coming from holes. Symptoms are unique to each tree species.

2. What is fusarium?

The female PSHB beetles carry a fungus (Fusarium euwallaceae) from tree to tree. The fungus grows in the tunnels becoming a 'vegetable food garden' for larvae and adults.

4. What happens to the tree?

The fungus in the tunnels is really bad for trees as it disrupts the flow of water and nutrients to the tree, causing branch dieback and ultimately the death of the tree.


Images courtesy: ZW de Beer, FABI.

Distribution Map

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Please note that the map displays UNVERIFIED Reports.

To date, there have been NO VERIFIED reports of Invasive Shot Hole Borer in the southern suburbs of Cape Town.

City of Cape Town PSHB Protocol

Download the City of Cape Town 'PSHB Management Protocol' launched by the Invasive Species Unit. 

The protocol explains a range of best practice methods - for contractors and property owners - when managing a PSHB invasion or infestation in Cape Town. 

City of Cape Town PSHB Management Protocol