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A larva of any of various chalcid wasps of the family Eurytomidae, especially of Tetramesa tritici, that infests grains, causing swelling and subsequent breakage near the first joint of the stem.
(Animals) US the larva of chalcid flies of the genus Harmolita, esp H. tritici, which form galls on the stems of cereal plants
a chalcid larva that feeds within the stems of grasses, often forming a gall at a joint. Also called strawworm.
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|Noun||1.||jointworm - larva of chalcid flies injurious to the straw of wheat and other grains|
Chalcidae, Chalcididae, family Chalcidae, family Chalcididae - an arthropod family including: chalcidflies
larva - the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose