Caterpillars feed by extending their heads and then curling up as they chew. So the trick was to focus right at the edge of the leaf and wait for the critter to bring it's head up to start the next "row". I got seven frames before it figured out I was close and stopped feeding. Shot horizontally but framed for a vertical composition, and I turned the shot 90 degrees in post. Easier than trying to hold the camera in portrait orientation.
Tech Specs: Canon 80D (F11, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (over 3x) + a diffused MT-26EX-RT with a Kaiser adjustable flash shoe on the "A" head (the key), E-TTL metering, -1/3 FEC, second curtain sync). This is a single, uncropped, frame taken hand held. I'm holding on to the stem of the plant with my left hand, and resting the lens on that same hand to keep the scene steady.

Shooting a hyperactive beetle feeding on Poppy pollen is probably the most technically challenging macro photography that I've done to date. Lots of deleted frames. Still want to revisit this scene before the Poppies are all gone.
Tech Specs: Canon 80D (F11, 1/125, ISO 100) + a Canon MP-E 65mm macro lens (about 2.5x) + a diffused MT-26EX-RT with a Kaiser adjustable flash shoe on the "A" head (the key), E-TTL metering, -1/3 FEC, second curtain sync). This is a single, uncropped, frame taken hand held.

Finally got a shot of the little devils that are decimating my flowers. Still want to shoot these Chafer Beetles, but most of them are already gone for the year.
Tech Specs: Canon 80D (F11, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (2x) + a diffused MT-26EX-RT with a Kaiser adjustable flash shoe on the "A" head (the key), E-TTL metering, -1/3 FEC, second curtain sync). This is a single, uncropped, frame taken hand held.

I'm disappointed that I clipped her wing, but this female Sweat Bee was moving so fast that I barely had time to adjust the frame. In my peripheral vision I could see the flower and the position of it, and those lines, and that's why I framed the scene the way that I did.
Tech Specs: Canon 80D (F11, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (3x) + a diffused MT-26EX-RT with a Kaiser adjustable flash shoe on the "A" head (the key), E-TTL metering, +1/3 FEC, second curtain sync). This is a single, uncropped, frame taken hand held.

Although it looks threatening this semi-active Carder Bee is just reacting to me being too close. I've never been bitten or stung, and like all solitary bees they are excellent pollinators.
Tech Specs: Canon 80D (F11, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (about 1.5x) + a diffused MT-26EX-RT with a Kaiser adjustable flash shoe on the "A" head (the key), E-TTL metering, -1/3 FEC, second curtain sync). This is a single, uncropped, frame taken hand held. I'm holding on to the stem of the flower with my left hand, and resting the lens on that same hand to keep the scene steady.

If you have any questions about technique or gear I'm more than happy to answer them.