Malumphy, C.P. 2012c Incursions of Duplachionaspis divergens (Green), an Asian Pest of Grasses, and D. exalbida (Cockerell), a South African Pest of Aloe, in Britain (Hemiptera: Diaspididae). Entomologist's Monthly Magazine 148:23-30

Notes: Two species of non-native Duplachionaspis have been found breeding in the U.K. Duplachionaspis divergens (Green), an Asian pest of grasses, was found on Chinese silver grass Miscanthus sinensis at a commercial plant nursery in Worcestershire during October/November 2007. The infested plants had been imported during the previous spring from South Africa, although there are no published records of D. divergens from sub-Saharan Africa. Duplachionaspis divergens is an invasive species that has been spreading in South America since the 1990s and North America since 2000. It has also been intercepted in England in 1987 and 2007 on lemon grass, Cymbopogon citrates, imported as a fresh herb from Thailand. These findings are significant as Miscanthus is rapidly increasing in economic importance in the U.K. as a bio-fuel crop. Duplachionaspis exalbida (Cockerell) has been found in England on four occasions (1926, 2002, 2010 and 2011) on ornamental aloe Aloe spp. plants imported from South Africa. Control measures have been taken against all recent findings of live Duplachionaspis scales on growing plants and there is no evidence that any species of Duplachionaspis is currently present in Britain, either naturalised or established under artificial conditions.