Beckwith, C.S. 1945 The insects of the cultivated blueberry.. Circular (New Jersey Department of Agriculture) No. 356: 43-54.
Notes: Scale species discussed include Putnam scale (Aspidiotus ancylus), oyster shell scale (Lepidosaphes ulmi and terrapin scale (Lecanium nigrofasciatum). Damage is described and control recommendations made.