The first record of Goniagnathini from Australia with description of four new species of Goniagnathus Fieber (Hemiptera: Cicadellidae: Deltocephalinae)

Deltocephalus centralis Evans is transfered from Arawa Knight (Tribe Athysanini) to Goniagnathus Fieber (Tribe Goniagnathini) as Goniagnathus centralis (Evans) comb. nov. and the male genitalia described for the first time. Four new Australian species of Goniagnathus are described: G. osmelaki Fletcher, G. venenensis Fletcher, G. crocodontis Fletcher and G. pectinatus Fletcher. This represents the first record of the tribe Goniagnathini in Australia. A key for the identification of the Australian species is provided.