Powder blue damselfly (Arabicnemis caerulea). A southern Arabian species known from Yemen, north-east Oman and the north of the United Arab Emirates. Drought, water extraction activities by humans (drainage, over-irrigation of crops) and pollution all threaten this species. The increasing human population in the region is likely to have a negative impact on this species as more pressures are placed on freshwater resources over the next ten yearsPhotograph: Robert W. Reimer/UICNGiant jewel (Chlorocypha centripunctata). Known from very few areas in south-east Nigeria and south-west Cameroon, this species is likely threatened by forest destruction Photograph: Kai Schuette/IUCNKihansi spray toad (Nectophrynoides asperginis). This toad was described in 1999, and in last year’s red list it was assessed as critically endangered, although it was acknowledged that the species may already have disappeared from the wild. This year it is formally declared extinct in the wild. The species was only known from the Kihansi Falls, in the Udzungwa Mountains, Tanzania, where it was formerly abundant, with a population of around 17,000 animals. The population showed natural fluctuations in size: it was at a high in May 1999, dropping to lower numbers in the course of 2001 and 2002, and at a high again in June 2003 when the total population was estimated at 20,989 individuals. However, since then the population has gone into steep declinePhotograph: Tim Herman/IUCN