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.
Download a FABI ID fact sheet.
Download the list of tree species infected by PSHB beetles
Learn more from FABI...
You have found a tree with PSBH beetle & fusarium damage. You need someone to check it?
Follow FABI protocols to send the material to FABI for checking.
Send to firstname.lastname@example.org
Have you seen PSHB beetles or fusarium damage in Cape Town?
Use the City of Cape Town PSHB reporting tool to report a suspected sighting.
An Asian borer beetle and a fungus found in KwaZulu-Natal last year is killing street and garden trees. Here's how to recognise damage to your trees.