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Ricania speculum
''Ricania speculum'', common name Black planthopper or Ricaniid Planthopper, is a species of planthoppers belonging to the family Ricaniidae. 〔(Encyclopedia of life ) 〕
This species is considered a major agricultural pest for several crops in tropical and subtropical areas (apples, coffee plants, oil palms, Citrus species, etc.).〔 Biosecurity Australia (2008) ( Issues paper for the import risk analysis for fresh apple fruit from the People’s Republic of China ) Australian Government, Department of Agriculture 〕〔〔 Dennis S. Hill ( Agricultural Insect Pests of the Tropics and Their Control ) 〕〔 Dennis S. Hil ( Pests of Crops in Warmer Climates and Their Control ) 〕
==Description==
''Ricania speculum'' can reach a length of about , with a wingspan of about . These grasshoppers have dark brown wings with central wavy horizontal bands and irregular transparent patches of different sizes. 〔 (Ricania speculum at gaga.biodiv.tw )〕〔(Project Noah ) 〕 The precostal area of the forewings shows dense transverse veinlets and the costal margin is distinctly convex near the base. 〔 Cui-Ping Bu and Ai-Ping Liang (First Record of the Genus Aprivesa Melichar (Hemiptera: Fulgoromorpha) from South India, with Description of One New Species )〕 In males the tip of the abdomen is pointed, while in females is rounded. The final instar larvae are white with black spots and waxy secrections on the abdomen. 〔E. Rossi, A. Lucchi (The Asian planthopper Ricania speculum (Walker) (Homoptera: Ricaniidae) on several crops in Italy ) 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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