Three Thyreas. The humpbacked bees are nest parasites, in this case they lays their eggs in the nests of Blue-banded Bees (Amegilla). The glittery blue one was collected in the Philippines by C.F. Baker in the early part of the last century. Baker collected insects throughout the islands and his important collection ended up in the Smithsonian after his early death in the 20’s.
The white one is an unknown species from Ethiopia. You can see from frazzled ends of the wings this female was relatively old. Like all Thyreus it breaks into the nests of Amegilla and perhaps other related species such as Anthophora. An odd rather hump-backed shape for a bee, lovely patterns of short appressed highly plumose brilliant white hairs. More designs for the fashionistas to copy.