lagging or gerengpung is the name for all kinds of insects. This insect is known from the stout megeluarkan sound out of the trees that lasts long. This insect has a pair of fasety eyes that lie deep in its head and usually also has a translucent wing of the field. the shape is sometimes like a big lala, this lag is living in temperate to tropical regions until it is easy to recognize among other insects. especially his large body and sound-producing tools under his wing. In Indonesia the sound of loud gamers will appear at the end of the rainy season.
From @ibnuhajzar