Hardy, N.B., & Gullan, P.J. 2008a Opisthoscelis nigra Froggatt (Eriococcidae) is an armored scale Maskellia nigra (Froggatt) (Diaspididae) (Hemiptera: Coccoidea).. Proceedings of the XI International Symposium on Scale Insect Studies, Oeiras, Portugal, 24-27 September 2007. ISA Press Lisbon, Portugal 322 pp.
Notes: Abstract: In Australia, ca. 70 species of gall-inducing felt scales (Eriococcidae) have been described feeding on myrtaceous hosts, especially Eucalyptus. In contrast, only a single species of Myrtaceae feeding and gall-inducing armored scale (Diaspididae) has been described. The diaspidid Maskellia globosa Fuller, the only named species of Maskellia Fuller, was described originally from sexually dimorphic galls on Eucalyptus gomphocephala in Western Australia but occurs also in other Australian states. Here we add a second species to the genus by transferring the gall-inducing Opistthoscelis nigra Froggatt (currently in Eriococcidae) to Maskellia, and redescribing the adult female and its gall. In the phylogenetic hypothesis of Morse and Normark (2006), the position of Maskellia within the Diaspididae is unresolved.