|By the halfway mark, I had found just two that were not sheltering the tiniest of white worms inside. A little stomach churning when the girls had been feasting just last weekend. A quick Google, revealed that this nearly always happens when ripe berries are allowed to sit too long on the cane, or allowed to drop to the soil below and putrefy.|
This is the damage caused by the Spotted Wing Drosophila, a pest exotic to Australia and which the Department of Primary Industry (its heirs and successors forever), treats a bit like Mad Cow Disease! The most help to eradicate this pest from my garden came, however, from fellow garden bloggers, eg New Life on a Homestead. There is heaps of more technical information out there on this pest geared toward the commercial fruit grower, eg here, and here, and here.
There are a number of distinguishing features of the SWD for identification
Prevention and Maintenance