The work of the bast miner was first called to our attention by Mr. S.
B. Detwiler. It is believed to be the most important insect causing
wounds in the chestnut. Experiments and studies up to the present time
make it probable that the bast miner is responsible for much blight
infection. To understand thoroughly the relationship of this insect to
the blight fungus, the life history has to be known. Much time has been
spent upon this subject, but unfortunately to date, the work has not
been completed.[8] The injurious period of its life history has been
obtained, but the period that would have to do with its suppression,
namely the adult period and time of egg laying, has not been discovered.