| Pyemotes tritici | The straw or grain itch mite, a common parasite of insects in stored grain and a frequent cause of straw or grain itch from their bites; not to be confused with Pyemotes tritici ventricosus, often called the straw itch mite, which is associated with the furniture beetle Anobium punctatum and is harmless to humans. Synonym: Pediculoides ventricosus. (05 Mar 2000) |
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| pyencephalus | Synonym: pyocephalus. Origin: G. Pyon, pus, + enkephalos, brain (05 Mar 2000) |
| pyesis | Synonym: suppuration. Origin: G. Pyon, pus, + -esis, condition or process (05 Mar 2000) |