carpenter bee

carpenter bee on blue salvia.
Carpenter bees (the genus Xylocopa in the subfamily Xylocopinae) are large bees distributed worldwide. There are some 500 species of carpenter bee in 31 subgenera.[1] Their name comes from the fact that nearly all species build their nests in burrows in dead wood, bamboo, or structural timbers (except those in the subgenus Proxylocopa, which nest in the ground). Members of the related tribe Ceratinini are sometimes referred to as "small carpenter bees".