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Tacua speciosa is a very large Southeast Asian species of cicada. It is the only member of the genus Tacua.
Tacua speciosa has a wingspan of 15–18 cm (5.9–7.1 in) and a head-body length of 4.7–5.7 cm (1.9–2.2 in). Megapomponia, Pomponia and Tacua are the largest cicadas in the world. Tacua speciosa has black wings, a yellow-green collar, a red transverse stripe on the thorax and a turquoise-blue abdomen.
This species can be found in Borneo, Sumatra, Java, Singapore, Malay Peninsula. It was once described as from North East India but it seems to be a mistake.
