Newstead, R. 1908 On the gum-lac insect of Madagascar, and other coccids affecting the citrus and tobacco in that island.. Quarterly Journal. Institute of Commercial Research in the Tropics. University of Liverpool 3: 3-13.

Notes: Lecanium nicotinae n. sp., Dactylopius virgatus madagascariensis n. var., Icerya seychellarum cristata n. var.; 3 other scale insects discussed.