This is a Yanga pulverea from Moramonga, Madagascar from the collection of Richard Newfrock.
Yanga pulverea belongs to the cicada tribe Platypleurini, which are known for their prominent pronotal collars and infuscations on their wings. Platy means broad & flat, and pleur means side. Broad side, flat side. I don’t know the root of the word Yanga, but pulverea means power or dust. Here’s photos of living Y. pulvera on iNaturalist.