Published online by Cambridge University Press: 10 July 2009
A brief review is given of species of Coccoidea found on sugarcane (Saccharum officinarum) in the island of New Guinea. A key and comments on all the species of Aulacaspis that have been recorded on sugarcane and other Saccharum spp. throughout the world is presented. The scale insect Aulacaspis neoguineensis Williams & Watson sp. n. is described from specimens on sugarcane intercepted at Washington, DC, USA from Papua New Guinea because it is a potential pest of sugarcane. It is compared with A. madiunensis (Zehntner), a closely-related species often injurious to sugarcane in southern Asia, Australia and Africa.