Hughes-Schrader, S. 1948 Cytology of coccids (Coccoidea-Homoptera).. Advances in Genetics 2: 127-203.

Notes: Topics covered include the coccid chromosome, primitive pattern of meiosis in coccids, modifications of meiosis in females, and specialized types of male meiosis. A table of taxonomic position and chromosome number of cytologically known coccids is provided and includes the species Aonidiella auranti (aurantii?), Aspidiotus hederae, Crypticerya rosae, Dactylopius sp., Echinicerya anomala, Gossyparia spuria, Gueriniella serratulae, Icerya littoralis, I. montserratensis, I. purchasi, I. similis, Lecanium corni, L. coryli, L. hemisphaericum (=Saissetia hemisphaerica), L. hesperidum (=Coccus hesperidum), Llaveia boubari, L. oaxacoensis, L. taenechina, Marchalina hellenica, Matsucoccus gallicola, Nautococcus schraderae, Phenacoccus acericola, P. gossypii, Protortonia primitiva, Pseudococcus adonidum, P. citri, P. (=Trionymus) diminutus, P. maritimus, P. nipae and Steatococcus tuberculatus. A cytological investigation of Phenacoleachia zealandica, sole representative of the family Phenacoleachidae, and least specialized of the Lecanoidae, is promoted for the future.