Pollen on a miner bee. Miner bees (or chimney bees) are one of many familiar black and yellow summertime bees often mistaken for bumble bees. They are garden pollinators and serve an increasingly important role as honey bee populations decline.
Caddisfly larvae build protective cases using materials found in their environment. Artist Hubert Duprat supplied them with gold leaf and precious stones. This is what they created. Don't know whether to pin this in Animals, or Art!