Pyemotes Ventricosus


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Pyemotes Ventricosus

 

a mite of the group Acari-formes. The mite parasitizes the larvae of insects that are pests of grain crops (Angoumois grain moth, jointworms). The sexually immature female is oblong, reaching 0.2 mm in length. The female gives birth to 200 to 300 mites, which undergo their entire development in the maternal body. Because of this, the posterior part of the female’s body becomes spherical. The males, which are born first, fertilize the females after they emerge. During periods of mass reproduction, P. ventricosus attack workers in grain storehouses, causing a severe skin irritation called grain itch.

References in periodicals archive ?
The North American straw itch mite, Pyemotes tritici (formerly Pyemotes ventricosus), feeds preferentially on the larvae of insects that infest cane, hay, straw, and some grains, especially rice.
Pyemotes ventricosus dermatitis, southeastern France.
However, stereomicroscope examination of the wood dust identified the mite Pyemotes ventricosus (Figure 2, panel B).