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Mealybug Fauna of Ningxia (Hemiptera:Coccoidea:Pseudococcidae)

WU San-an (The Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China)  
Forty-one species in 24 genera of mealybugs,Pseudococcidae are listed from Ningxia,China.Among them,Fonscolombia ningxiana and Longicoccus agropyri are described as new to science,Spinococcus multitubulatus(Danzig) and Trionymus singularis Schmutterer are new record species to China;Longicoccus leymicola(Tang,1992) comb.n.is transferred from Mirococcus Borchsenius;Puto jarudensis Tang,1992 is found to be a new synonymy of Ceroputo pilosellae Sulc,1898.A key to mealybug species of Ningxia is provided.The type speciemens are deposited in the Research Center of Scale Insects,Shanxi Agricultural University.
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