It is therefore easy to inspect it, if we take care first of all to dig a trench so that the wall of the burrow may be afterwards cut away, slice by slice, with the blade of a knife.

The burrow is thus laid bare along its whole extent, from the surface to the bottom, until nothing remains of it but a demi-cylindrical groove.
Often the violated dwelling is empty.

The insect has departed in the night, having finished its business there.

It is a nomad, a night-walker, which leaves its dwelling without regret and easily acquires another.

Often, on the other hand, the insect will be found at the bottom of the burrow; sometimes a male, sometimes a female, but always alone.