CSIRO PUBLISHING Invertebrate Systematics, 2015, 29, 287–312 http://dx.doi.org/10.1071/IS14061 Systematic review of the Australian ‘bush coconut’ genus Cystococcus (Hemiptera: Eriococcidae) uncovers a new species from Queensland Thomas L. Semple A,E, Penny J. Gullan B, Christopher J. Hodgson C, Nate B. Hardy D and Lyn G. Cook A AThe University of Queensland, School of Biological Sciences, Brisbane, Qld 4072, Australia. BDivision of Evolution, Ecology & Genetics, The Research School of Biology, The Australian National University, Acton, ACT 2601, Australia. CDepartment of Biodiversity and Biological Systematics, The National Museum of Wales, Cathays Park, Cardiff, CF10 3NP, Wales, UK. DDepartment of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA. ECorresponding author. Email:
[email protected] Abstract. Australia houses some unusual biota (insects included), much of which is undescribed. Cystococcus Fuller (Hemiptera : Sternorrhyncha : Coccoidea : Eriococcidae) currently comprises two species, both of which induce galls exclusively on bloodwoods (Myrtaceae: Corymbia Hill & Johnson). These insects display sexual dichronism, whereby females give birth first to sons and then to daughters. Wingless first-instar females cling to their winged adult brothers and are carried out of the maternal gall when the males flytofind mates – a behaviour called intersexual phoresy. Here, we use data from two gene regions, as well as morphology and host-use of the insects, to assess the status of a previously undescribed species. We describe this newly recognised species as Cystococcus campanidorsalis, sp. nov. Semple, Cook & Hodgson, redescribe the two existing species – C. echiniformis Fuller and C. pomiformis (Froggatt), designate a lectotype for C. echiniformis, and provide the first descriptions of adult males, and nymphal males and females for the genus.