BIOSYSTEMATICS OF 2 NEW GALL-INDUCING THRIPS WITH SOLDIERS (INSECTA, THYSANOPTERA) FROM ACACIA TREES IN AUSTRALIA

Kladothrips hamiltoni sp.n. and Oncothrips waterhousei sp. n. are desc ribed from phyllode galls on Acacia trees in Australia. The offspring of the first generation within each gall develop into soldiers as adul ts. These individuals have enlarged fore legs which they use to defend their gall from invaders. Twelve species in three genera of Phlaeothr ipidae are now known to induce phyllode galls on Australian Acacia tre es, and four of these in two genera produce soldiers.