[R] Vermiform and having only 2 pairs of legs, these invisible mites are very small (less than 2.5 mm long). Each species causes a specific type of damage on a specific plant.
These mites develop from the egg to the adult through 2 active nymphal stages alternating with 2 immobile stages.
They pierce the wall of the plant cells with a wounding organ composed of 5 stylets, including the 2 modified chelicerae, but do not kill cells. Numerous hairs as well as galls may develop on the affected plant, whose twigs may also become bushy. Some eriophyids produce characteristic blisters on the foliage and others cause leaf rolling.
Some of these mites are vectors of viruses.
* Eriophyidae: adult female (INRA)
a: rostrum; b: shield; c: legs; d: orifice g_nital; e: "thanosoma", f: "telosoma"; g: anal lobe.
HYPPZ on line: Species (scientific names), Pests (common names), Glossary, Crops.