Sawflies (Hymenoptera: Symphyta, Tenthredinidae) from Vietnam and China

Nine new species are described from Vietnam: Beleses sapaensis spec. nov., Brykella tamdaoensis spec. nov., Caliroa vietnamensis spec. nov., Darjilingia bicoloricornis spec. nov., Mallachiella achterbergiana spec. nov., Clypea hogenesi spec. nov., Neothrinax dejongei spec. nov., Neothrinax achterbergi spec. nov., Nesoselandria alborobusta spec. nov. and Tenthredo (Tenthredella) achterbergi spec. nov. The unknown male of Tenthredo (Tenthredina) nigricornis Malaise, 1945 is described. Beleses tianmuensis spec. nov. is described from China. Abeleses versicolor Malaise, 1961, Abusarbidea infumata Wei & Nie, 1999, Athlophorus mimicarius (Malaise, 1947), Clypea sino-birmana Malaise, 1961, Eusunoxa semipunctata Smith & Saini, 2003, Eutomostethus metallicus (Sato, 1928), Indotaxonus tricoloricornis (Konow, 1898), Tenthredo appendicella Malaise, 1945, Tenthredo cyanata Konow, 1898 and Tenthredo genitalis Malaise, 1945 are new for Vietnam.