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Thopha saccata, commonly known as the double drummer, is the largest Australian species of cicada and reputedly the loudest insect in the world. D\icada native to Australia. Its common name comes from the large dark red-brown sac-like pockets that the adult male has on each side of its abdomen—the "double drums"—that are used to amplify the sound it produces.

Broad-headed compared with other cicadas, the double drummer is mostly brown with a black pattern across the back of its thorax, and has red-brown and black underparts. The sexes are similar in appearance, though the female lacks the male's tymbals and sac-like covers. Found in sclerophyll forest in Queensland and New South Wales, adult double drummers generally perch high in the branches of large eucalypts. They emerge from the ground where they have spent several years as nymphs from November until March, and live for another four to five weeks. The

Danish naturalist Johan Christian Fabricius described the double drummer as Tettigonia saccata in 1803,[1] the first description of an Australian cicada.[2] The type locality was inexplicably and incorrectly recorded as China.[3] It was placed in the new genus Thopha by French entomologists Charles Jean-Baptiste Amyot and Jean Guillaume Audinet-Serville in their 1843 work Histoire naturelle des insectes Hemipteres ("Natural History of Hemiptera Insects"). The generic name is derived from thoph (Hebrew: תּוֹף‬‬‎), meaning "drum". They maintained it as native to China.[4] The specific name is derived from the Latin saccus, meaning "sac" or "bag", and more specifically "moneybag".[5]

In 1838, Félix Édouard Guérin-Méneville pointed out that the double drummer is native to Auwefwf its abdomen.[10]