Bartlett, O.C. 1929 Annual report.. Annual report (Arizona Commission of Agriculture and Horticulture) 19th & 20th: 12-22.

Notes: Species recorded on quarantined plants include red scale, purple scale, ivy scale, San Jose scale, black scale, soft brown scale, mealy bugs, rose scale, cottony cushion scale, chaff scale, gray scale, aspidistra scale, greedy scale, dictosperum scale, Florida wax scale, rose scale, cyanophyllum scale, hemispherical scale, pine leaf scale, and oyster shell scale.