Rhyzobius
 Rhizobius is a genus in the fungi kingdom (see Disease resistance in fruit and vegetables) as well as an obsolete name for the aphid genus Pemphigus.Rhyzobius is a genus in the lady beetle family (Coccinellidae). It belongs to tribe Coccidulini of subfamily Coccidulinae which is sometimes subsumed in the Coccinellinae as a tribe with the Coccidulini downranked to subtribe.The genus was established by J.F. Stephens in 1832.