Printable information posters are available in the links on the right for use in the field or grading room.
The most distinctive damage is that caused by the Australia truffle beetle (Thalycrodes sp. Family Nitidulidae). Both the adults and the larvae are obligate truffle feeders. They make holes approximately 1mm in diameter and can tunnel extensively within a truffle.
Adults and larvae can be found in the tunnels even after harvest and washing.
Adult truffle beetles are very small, approximately 2-3mm long and 1-1.5mm wide. They are honey brown colour with distinctive clubbed antennae and rows of hairs on their back.
Truffle beetle larvae are pointed at both ends, have a brown head, tiny legs on the thorax and a segmented body.
Invertebrates in the grading room
Other invertebrates that are not uncommonly found in and on truffles at harvest are springtails, pot worms, fly larvae and fungus gnats.
These are thought to be secondary pests, meaning they only feed on truffle that is unsound. The truffle may have already had feeding damage or rot, developed cracks or been soft or over mature.
Holes and cavities
Slugs and slaters – produce deep and uneven cavities
Black earwigs – produce uneven holes
Weevil larvae – produce holes approximately 5mm in diameter
Millipedes – can produce uneven holes or browse the peridium
African black beetle - adults produce holes approximately 10mm in diameter