Mine age |
Fresh |
mine is white and a black trail of frass is visible |
|
|
Medium |
mine is mostly white, but with some browning and frass is
less distinct |
|
|
Old |
mine is mostly brown and frass is mostly indistinct |
|
Presence of larva |
Larva removed |
a healthy larva was present and
excised from the mine |
|
|
Dead larva |
the remains of a dead larva were present within the mine |
|
|
Empty |
no remains of a larva were present within the mine |
|