I was just outside on the deck and noticed something flying around the mason bee hotel. Since the tubes are almost all occupied I was curious who might be looking for a place to live. As I watched I saw a small wasp climbing around on the outside of the bamboo carefully inspecting them with her antennae. Then she assumed a rather arched posture and I assumed the worst.
Yup, somebody’s laying eggs! If you look closely you can count her six tan feet versus one black, evil (if you’re the poor, parasitized pupa inside) ovipositor.
When I looked around the other side I could clearly see the crack she had discovered and was exploiting. It’s a flaw in the fortress that will probably cost more than one mason be his or her life. Bummer. Yet it’s fascinating. This makes me think I should be changing out the bamboo each year. Replacing it will not only lessen the occurrence of vulnerable cracks, but also reduce the buildup of parasitic mites.
Seems there’s always something going on.