scale infected croton leaf

agriculture animal animals arthropod botanical brown bug ceroplastes cobweb coccoidea cottony covered croton cushion disease fungal fungi fungus garden gardening green hemiptera icerya infected infection insect insects leaf leaves mealy mealybug mildew mold monophiebidae nature oystershell pathogen pest pests plant plants powdery purchasi scale scales scaly spider spot sternorrhyncha top tree trees underside web white