Howell, J.O. 1975a Descriptions of some immature stages in two Diaspis species (Homoptera: Coccoidea: Diaspididae).. Annals of the Entomological Society of America 68: 409-416.

Notes: D. echinocacti and D. bromeliae; first and second stage male; first stage female; hosts and distribution; taxonomic notes.