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 ?
Algunos autores han reportado a los acaros del genero Pyemotes, como principales plagas de este insecto, ocasionando estos un efecto directo sobre el hospedero (Amaya, 1998).
2012), or straw itch mite Pyemotes tritici (Tomalski and Miller, 1991; Lu et al.
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.
In summary, human infestations with Pyemotes mite ectoparasites of insect pests of plants, trees, and non-living plant and wood products, such as cane, hay, straw, and indoor furniture are common causes of annoying pruritic, erythematous maculopapular rashes.
published an interesting article (1) about dermatitis in France caused by Pyemotes ventricosus in which they highlight the presence of the comet sign in a number of their patients.
Pyemotes ventricosus dermatitis, southeastern France.
Entomologists from Kansas State University (KSU), Pittsburg State University (PSU), and the University of Nebraska--Lincoln, hypothesized that mites from the Pyemotes genus probably caused the insect bites.
Pyemotes ventricosus, a parasite of the furniture beetle Anobium punctatum, was the cause of this condition.