I dissected a set of wild rose bush galls to discover minuscule wasps in various stages of development. These shots were taken with a 25mm f/3.5 macro lens and Lieberkühn reflector. Appropriately, this subset of gall wasps are colloquially known as rose gall wasps or mis-known as gallflies. They gain some control over the host plant, inducing the characteristic gall they live in during early development, but I am uncertain as to how much this may harm the plant and if they perform any significant pollination services.
I have also been working on increasing the utility of my 3D printed lens caps. These are now available to fit two sizes of filter threads in a single lens cap-ideal for a day of shooting split between two lenses. And they still stay affixed better than squeeze style caps.