Site updated: April 2026

PSHB identification and sample submission

Is it PSHB? Start here Photo credit Anandi Bierman Do you observe multiple, small, round entry-holes accompanied by (1) wet staining or; (2) gumming or; (3) white powder/ frass/ sawdust. YES Is the entry-hole ±1mm.
Scrape away bark to get a better view. YES Is the tree on the list of reproductive hosts? Complete list of host trees YES I. Confirm identification of infestation
II. How to dispose of infested material
III. Do’s and Don'ts
 Symptoms likely caused by other insects or diseases

Consult horticulturist, technical pest control advisor, Stellenbosch Insect Identification or Stellenbosch Disease clinic NO NO NO

SYMPTOMS

Variety of external signs of PSHB attack on different tree species.Symptoms of attack on different tree species in South Africa.

STEP 1:
Take a photo of the entire tree documenting any wilting or dieback

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STEP 2:
Take a photo to assist in identification of tree, include: bark, leaves, flowers and seeds (if available).

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STEP 3:
Take a photo of a couple of the observed entry-holes

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STEP 4:
 Use a knife to remove bark around a single entry-hole and take a photo. Place wood with fungus staining in a container.

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STEP 5:
If a beetle is collected, place (dead) beetle in a container (ethanol).

161 Female

Photo credit Anandi Bierman

STEP 6:
Keep samples cool. Send images and GPS location to pshb@hortgro.co.za Hortgro will contact you with more information.

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