Over the years, while working in the woods, I have witnessed several phenomenon on which I hope someone might shed some light.
On the eastern slope of old growth hardwood ridge in northeastern Maine, Beeches, perhaps under attack of Pigeon Horntails, displated by the hundreds giant ichneumons, ovipositor arched and in boreing position. A transparent film covered the inside of the circluar space defined by the the ovipositor. Some of the insects were dead. In some places, only the ovipositor remained (The insect perhaps prey?)
While following a skidder, in March, through hardwoods, the ring chains lifted previously undisturbed snow, revealing leaf drop from previous fall and approximately a quart of soft bodied insects, the color of red ochre. They looked like springtails...I am only familiar with the adult form that shadow footprints in the snow and seem to accumulate at waters edge before ice out.
Twice I have witnessed masses of metalic blue beetles, quarts of them in each instance. The first incident, they were massed on young fir re-gen; the next, on an alder bush denuded of its leaves. I don't recall ever seeing these beetles at any other time.
Thank you in advance for anyone who will share insight or comments.