Mohammad, Z.K., Mohammad, S.K., & Mohammad, M.A. 1997 Taxonomic studies and survey of four families of Coccoidea (Homoptera) in Egypt.. Journal of the Egyptian German Society of Zoology 22: 189-233.

Notes: The first and second female nymphal instars of six species of scale insects under four genera belonging to four families: Asterolecaniidae, Cerococcidae, Eriococcidae and Phoenicococcidae; collected on thirteen species of host plants in Egypt; descriptions; illustrations; keys.