Wild roses are blooming in Discovery Park, and an amazing variety of insects are flying up to feed from them. Here's a sampling with speculations on the animals' identities.
Looks like genus Megachile to me, perhaps a leaf-cutter bee.
Genus Bombus. Maybe a yellow-faced bumble bee?
Another Bombus. Red-belted bumble bee, I think.
Flower longhorn beetle and, um, some kind of small stripy not-very-hairy bee. A resin bee, perhaps, such as Dianthidium?