I think "Brazil wood" is a catch all for lots of woods, sometimes including Pernambuco, but mostly Abeille
Some bows are called Pernambuco but the wood is not from the heart wood so less dense.. "Brasil wood" probably better.
Some bows are made of snake wood...
Yours is not heart wood Pernambuco as the grain is not dense enough, it looks too light to be snake wood. It's been stained, so it's hard to tell the original colour. I guess it is some kind of generic Brazil wood.
Light weight is not necessarily a sign of high quality wood .. cheaper woods are usually lighter weight. The thing with Pernambuco is that it's very dense and evenly grained so you can remove a lot of wood and make it light (if you want), better balanced and springy are the real aims, rather than low weight.
I inherited a gold mounted fine Pernambuco cello bow which is the same weight as my ( generic Brazil wood ) student bow...but in the hand it feels like a sledge hammer. Waste of nice wood according to a local dealer 😞