A ｌife style of an insect

A story of an insect.
This is a nest of Hoplitis tridentata（MITSUBA-TUTU-HANABACHI).
These bees make plural small room in a stem of a raspberry and save honey and pollen paste there and lay one egg on the paste.
A small room is made from a bottom sequentially towards the top.
Of course a bottom's egg is the oldest, and the top is the newest.
Therefore, as for the metamorphosis to a chrysalis, as for the metamorphosis to an imago, a bottom's room is early.

I drew it on a figure. It changes from Ⅰ into Ⅳ.
What kind of method will the bottom imago go out by?


The method and experiment are written down to a description of Fabre insect (Souvenirs Entomologiques) in detail.

I am interested in this book very much.