You have set up the portal as a button. When you do this, even though you have a one row portal, the GTRR does not know which related record you want to go to.
1. make the fields in the portal into a button, OR
2. create a box that is the slightly smaller than the portal (row), make it into a button, place it in the portal behind the fields (make the fields non-enterable in Browse mode)
BTW, the name and image fields on your Insect Selection layout should be from the current table occurrence (Insect).